Tag: engineering
Juno to remain in 53-day orbit
The scientists and engineers running the Juno mission to Jupiter have decided to keep the spacecraft in its 53-day orbit for the rest of its mission rather than fire its engines to lower the orbit to its planned 14 days duration.
The original Juno flight plan envisioned the spacecraft looping around Jupiter twice in 53-day orbits, then reducing its orbital period to 14 days for the remainder of the mission. However, two helium check valves that are part of the plumbing for the spacecraft’s main engine did not operate as expected when the propulsion system was pressurized in October. Telemetry from the spacecraft indicated that it took several minutes for the valves to open, while it took only a few seconds during past main engine firings. “During a thorough review, we looked at multiple scenarios that would place Juno in a shorter-period orbit, but there was concern that another main engine burn could result in a less-than-desirable orbit,” said Rick Nybakken, Juno project manager at NASA’s Jet Propulsion Laboratory in Pasadena, California. “The bottom line is a burn represented a risk to completion of Juno’s science objectives.”
There are both pros and cons for using this longer orbit, detailed at the link, with.the most important being that doing nothing avoids losing the mission entirely.
The scientists and engineers running the Juno mission to Jupiter have decided to keep the spacecraft in its 53-day orbit for the rest of its mission rather than fire its engines to lower the orbit to its planned 14 days duration.
The original Juno flight plan envisioned the spacecraft looping around Jupiter twice in 53-day orbits, then reducing its orbital period to 14 days for the remainder of the mission. However, two helium check valves that are part of the plumbing for the spacecraft’s main engine did not operate as expected when the propulsion system was pressurized in October. Telemetry from the spacecraft indicated that it took several minutes for the valves to open, while it took only a few seconds during past main engine firings. “During a thorough review, we looked at multiple scenarios that would place Juno in a shorter-period orbit, but there was concern that another main engine burn could result in a less-than-desirable orbit,” said Rick Nybakken, Juno project manager at NASA’s Jet Propulsion Laboratory in Pasadena, California. “The bottom line is a burn represented a risk to completion of Juno’s science objectives.”
There are both pros and cons for using this longer orbit, detailed at the link, with.the most important being that doing nothing avoids losing the mission entirely.
Killing both commercial space and American astronauts
This all reeks of politics: A new Government Accountability Office (GAO) report released yesterday says that NASA it should not permit Boeing and SpaceX to fly humans on their capsules and rockets until they fix certain issues and test both repeatedly on unmanned flights before the first manned flights to ISS.
This GAO report was mandated by Congress, and it requires NASA to certify that both Boeing and SpaceX have met NASA’s requirements before allowing those first manned flights. While the technical issues outlined in the report — to which NASA concurs — might be of concern, my overall impression in reading the report, combined with yesterday’s announcement by NASA that they are seriously considering flying humans on SLS’s first test flight, is that this process is actually designed to put obstacles in front of Boeing and SpaceX so as to slow their progress and allow SLS to launch first with humans aboard.
For example, the report lists three main problems with the commercial manned effort. First there is the Russian engine on the Atlas 5. From the report itself [pdf]:
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Dawn finds organics on Ceres
The spacecraft Dawn has detected evidence of organic molecules in Ceres’ northern hemisphere.
The organic materials on Ceres are mainly located in an area covering approximately 400 square miles (about 1,000 square kilometers). The signature of organics is very clear on the floor of Ernutet Crater, on its southern rim and in an area just outside the crater to the southwest. Another large area with well-defined signatures is found across the northwest part of the crater rim and ejecta. There are other smaller organic-rich areas several miles (kilometers) west and east of the crater. Organics also were found in a very small area in Inamahari Crater, about 250 miles (400 kilometers) away from Ernutet.
This detection does not mean that Dawn has found life on Ceres. It means that the spacecraft has detected molecules that contain carbon, which is the chemical definition of organics. Nor is it unusual for asteroids to have carbon molecules. In fact, there is an entire asteroid class dubbed carbonaceous chondrites that are rich in carbon. In addition, the press release overplays this narrative by making it seem as if the discovery of organics in the solar system is rare and unusual. It is not. Molecules containing carbon have been found in many places, on Mars, on Venus, in asteroids, and elsewhere. All that is happened here is that the scientists have gained more information about the make-up Ceres itself. This is good, but it isn’t what is being sold by the press release.
The spacecraft Dawn has detected evidence of organic molecules in Ceres’ northern hemisphere.
The organic materials on Ceres are mainly located in an area covering approximately 400 square miles (about 1,000 square kilometers). The signature of organics is very clear on the floor of Ernutet Crater, on its southern rim and in an area just outside the crater to the southwest. Another large area with well-defined signatures is found across the northwest part of the crater rim and ejecta. There are other smaller organic-rich areas several miles (kilometers) west and east of the crater. Organics also were found in a very small area in Inamahari Crater, about 250 miles (400 kilometers) away from Ernutet.
This detection does not mean that Dawn has found life on Ceres. It means that the spacecraft has detected molecules that contain carbon, which is the chemical definition of organics. Nor is it unusual for asteroids to have carbon molecules. In fact, there is an entire asteroid class dubbed carbonaceous chondrites that are rich in carbon. In addition, the press release overplays this narrative by making it seem as if the discovery of organics in the solar system is rare and unusual. It is not. Molecules containing carbon have been found in many places, on Mars, on Venus, in asteroids, and elsewhere. All that is happened here is that the scientists have gained more information about the make-up Ceres itself. This is good, but it isn’t what is being sold by the press release.
UAE proposes building Martian city within a century
The competition heats up? The United Arab Emirates announced on Tuesday its plan to construct a city on Mars and have it completed by 2117, a hundred years from now.
On Tuesday, at the sidelines of the World Government Summit in Dubai, the UAE announced that it was planning to build the first city on Mars by 2117. According to CNBC, UAE engineers presented a concept city at the event about the size of Chicago for guests to explore.
In a statement, Sheikh Mohammed bin Rashid Al Maktoum, ruler of Dubai and vice president of the UAE, sounded confident about the project. “Human ambitions have no limits, and whoever looks into the scientific breakthroughs in the current century believes that human abilities can realize the most important human dream,” Maktoum said.
And despite the grandiose nature of the idea, the 100-year-plan does emphasize some practical steps. “The Mars 2117 Project is a long-term project,” Maktoum explained in the statement, adding that the first order of business would be making space travel appeal to young Emiratis, with special programs in space sciences being set up at universities in the UAE.
Maktoum is the guy that pushed to create the UAE’s space agency, and is leading its effort to fly an unmanned mission to Mars by 2020. It is very clear that his goal is to inspire his country and its youth so that they will aim high in future years. I wish him well, as this is a far better goal for an Islamic nation than sending out suicide bombers to kill innocent people.
I must add that I remain very skeptical about this particular plan. I fully expect us to finally get to Mars in the next century, but whether we will have the ability to build cities there in that time frame remains questionable.
The competition heats up? The United Arab Emirates announced on Tuesday its plan to construct a city on Mars and have it completed by 2117, a hundred years from now.
On Tuesday, at the sidelines of the World Government Summit in Dubai, the UAE announced that it was planning to build the first city on Mars by 2117. According to CNBC, UAE engineers presented a concept city at the event about the size of Chicago for guests to explore.
In a statement, Sheikh Mohammed bin Rashid Al Maktoum, ruler of Dubai and vice president of the UAE, sounded confident about the project. “Human ambitions have no limits, and whoever looks into the scientific breakthroughs in the current century believes that human abilities can realize the most important human dream,” Maktoum said.
And despite the grandiose nature of the idea, the 100-year-plan does emphasize some practical steps. “The Mars 2117 Project is a long-term project,” Maktoum explained in the statement, adding that the first order of business would be making space travel appeal to young Emiratis, with special programs in space sciences being set up at universities in the UAE.
Maktoum is the guy that pushed to create the UAE’s space agency, and is leading its effort to fly an unmanned mission to Mars by 2020. It is very clear that his goal is to inspire his country and its youth so that they will aim high in future years. I wish him well, as this is a far better goal for an Islamic nation than sending out suicide bombers to kill innocent people.
I must add that I remain very skeptical about this particular plan. I fully expect us to finally get to Mars in the next century, but whether we will have the ability to build cities there in that time frame remains questionable.
Weather threatens Saturday Falcon 9 launch
Because of threatening weather SpaceX’s Saturday launch of Falcon 9 and the Dragon capsule might be delayed until Sunday.
Because of threatening weather SpaceX’s Saturday launch of Falcon 9 and the Dragon capsule might be delayed until Sunday.
Rocket Lab delivers first test rocket to launch site
The competition heats up: Rocket Lab has delivered its first test rocket to its New Zealand launch complex in preparation for testing.
Over the coming weeks, a series of tests and checkouts will be conducted at the site before the rocket, named “It’s a Test,” is signed-off to fly. “We put it out to our team to name the vehicle,” said Beck. “We wanted to acknowledge the intensive research and development Electron has undergone and that continues with these test flights.”
The launch, which will be the first orbital launch attempt from New Zealand, is the first of three planned tests before Rocket Lab begins providing customers commercial satellite launches.
They hope to launch their first commercial payload on an operational Electron rocket before the end of this year.
The competition heats up: Rocket Lab has delivered its first test rocket to its New Zealand launch complex in preparation for testing.
Over the coming weeks, a series of tests and checkouts will be conducted at the site before the rocket, named “It’s a Test,” is signed-off to fly. “We put it out to our team to name the vehicle,” said Beck. “We wanted to acknowledge the intensive research and development Electron has undergone and that continues with these test flights.”
The launch, which will be the first orbital launch attempt from New Zealand, is the first of three planned tests before Rocket Lab begins providing customers commercial satellite launches.
They hope to launch their first commercial payload on an operational Electron rocket before the end of this year.
India preparing rover for 2018 Moon landing
The competition heats up: India preparing rover for 2018 Moon landing.
Isro’s Satellite Applications Centre Director, M. Annadurai, revealed the tentative launch schedule while speaking to the press at the Satish Dhawan Space Centre, Shar, Sriharikota on Wednesday. He said a Lander and a six-wheeled Rover were being prepped to go with the Chandrayaan-II mission. The chief scientist added that a launch is likely to take place in the first quarter of 2018. According to Dr P.V. Venkita Krishnan, the director of the Isro Propulsion Complex at Mahendragiri, engineers were currently testing soft-landing engines.
India’s launch of a record 104 satellites on a single rocket has pumped up the Indian press, as there were almost 20 stories on space and that launch in their press today, almost all favorable.
This article however is from the U.S., and takes a look at the ineffective American space policy that supposedly forbids American companies from launching on Indian rockets.
The U.S. Commercial Space Launch Agreement of 2005 prohibits the launch of commercial satellites on the Indian vehicle. The reasoning is that struggling U.S. commercial launch providers needed time to establish themselves in the market and would be wiped out by India’s PSLV, which is developed by the Indian Space Organization.
Since 2015, commercial satellite owners have successfully obtained waivers to the policy.
The article notes India’s competitive prices, as well as the overall state of the smallsat industry and its dependence on bigger rockets as secondary payloads to get into space. India’s rockets, funded and subsidized by the government but also built to be inexpensive so as to attract customers, is clearly positioned to effectively compete with SpaceX, who until now charged the least.
What will our Congress do? My preference would be for them to repeal this part of the 2005 law so that American satellite companies can fly on whoever they wish. That would increase competition but it would also likely invigorate the overall launch industry because it would increase the satellite customer base for those rockets and thus create more business for everyone.
Sadly, I suspect that Congress will instead demand that the waivers to the law cease, and will thus block the use if Indian satellites by American companies. The short-sightedness of our politicians never ceases to surprise me.
The competition heats up: India preparing rover for 2018 Moon landing.
Isro’s Satellite Applications Centre Director, M. Annadurai, revealed the tentative launch schedule while speaking to the press at the Satish Dhawan Space Centre, Shar, Sriharikota on Wednesday. He said a Lander and a six-wheeled Rover were being prepped to go with the Chandrayaan-II mission. The chief scientist added that a launch is likely to take place in the first quarter of 2018. According to Dr P.V. Venkita Krishnan, the director of the Isro Propulsion Complex at Mahendragiri, engineers were currently testing soft-landing engines.
India’s launch of a record 104 satellites on a single rocket has pumped up the Indian press, as there were almost 20 stories on space and that launch in their press today, almost all favorable.
This article however is from the U.S., and takes a look at the ineffective American space policy that supposedly forbids American companies from launching on Indian rockets.
The U.S. Commercial Space Launch Agreement of 2005 prohibits the launch of commercial satellites on the Indian vehicle. The reasoning is that struggling U.S. commercial launch providers needed time to establish themselves in the market and would be wiped out by India’s PSLV, which is developed by the Indian Space Organization.
Since 2015, commercial satellite owners have successfully obtained waivers to the policy.
The article notes India’s competitive prices, as well as the overall state of the smallsat industry and its dependence on bigger rockets as secondary payloads to get into space. India’s rockets, funded and subsidized by the government but also built to be inexpensive so as to attract customers, is clearly positioned to effectively compete with SpaceX, who until now charged the least.
What will our Congress do? My preference would be for them to repeal this part of the 2005 law so that American satellite companies can fly on whoever they wish. That would increase competition but it would also likely invigorate the overall launch industry because it would increase the satellite customer base for those rockets and thus create more business for everyone.
Sadly, I suspect that Congress will instead demand that the waivers to the law cease, and will thus block the use if Indian satellites by American companies. The short-sightedness of our politicians never ceases to surprise me.
The Feather King
India launches record 104 satellites at one go
The competition heats up: India today successfully used its PSLV rocket to launch a record 104 satellites.
I can’t quote the description of the 104 satellites as it is too long. The bottom line however is that India has demonstrated that it is now a major player in the space launch industry.
The competition heats up: India today successfully used its PSLV rocket to launch a record 104 satellites.
I can’t quote the description of the 104 satellites as it is too long. The bottom line however is that India has demonstrated that it is now a major player in the space launch industry.
Mars rover update: February 14, 2017
Curiosity
For the overall context of Curiosity’s travels, see Pinpointing Curiosity’s location in Gale Crater.
Since my last update in January, Curiosity done more or less what I predicted. It headed southwest through the dune area and then made a side trip to the small mesa there, dubbed Ireson Hill by the Curiosity science team and shown on the right. They then made an additional side trip past the hill to get a close look a the large sandy dune field beyond, also shown on the right. After getting some nice closeups as well as scooping up some sand for observation, they have now gone back to Ireson Hill to get another close look at the dark rocks that have rolled off the top of the hill and are now in reach at its base. The image on the left shows the arm positioned above one of those rocks.
The drill remains out of commission, with no word when they will try using it again. In addition, there had been a problem with the ChemCam laser that does spectroscopic analysis, but as of this week it is back in action, and is being used to analysis the small rock above.
Below is an overview of their route so far as well as my annotations on where I think they will be heading in the future.
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The international government effort to come up with a cis-lunar ISS
The competition heats up: In the past five years the various international partners and their space agencies have been conducting studies for developing a new international space station, this time based not in Earth orbit but located near the Moon.
Following initial approval in the fall of 2014, the five space agencies formed the ISS Exploration Capabilities Study Team, IECST, which was tasked with reviewing how the ISS experience could be used to build the cis-lunar infrastructure, with determining its possible architecture and with drafting its flight plan and possible mission. Specialists also had the task of looking at all the necessary technologies, logistics and maintenance which would be required for building and operating a small habitat near the Moon. This man-tended outpost could serve as a way station to the lunar surface and as a springboard for the exploration of the Solar System, including asteroids, Mars and its moons. In fact, the outpost itself could eventually embark on a journey toward a deep-space destination. Representatives of the various space agencies also tried to see what contributions each country could make, based on their technical capabilities and realistic budgets.
All the work was conducted within the ISS program and covered by its budget.
Initially, the IECST group included representatives from space agencies only, for the exception of Russia, with Roskosmos officials needed help from the nation’s prime contractor in human space flight — RKK Energia. For the final few meetings in 2016, ESA also brought representatives from the European space industry. However NASA did not directly involve its key human space flight contractors into the IECST activities. (Instead, the US aerospace companies Boeing and Lockheed Martin continued parallel studies in cooperation with RKK Energia in Russia, EADS Astrium in Europe and Mitsubishi in Japan.) [emphasis mine]
Read the whole article. Lots of interesting details.
In a sense, this international effort is a political lobbying effort by these space agencies to come up with a single project to follow ISS that will continue the funneling of government money to them all. It is also an effort by them to structure future space exploration so all efforts will be contained within this single program, rather than allowing for many different competing efforts, both private and public. In addition, it is an attempt by NASA to come up with some long-term mission for SLS/Orion, which at present has no operational purpose and no funding beyond its first manned flight in 2021.
Finally, note the highlighted sentence above. This effort — which will benefit not just NASA but the space agencies of Russia, Europe, and Japan as well as the old big space companies like Boeing, Lockheed Martin, and Mitsubishi — is been paid entirely by American tax dollars. Something about this to me seems wrong. Shouldn’t the cost here be shared? And doesn’t it seem inappropriate for NASA to be picking the companies it wants to work with, without open bidding?
The competition heats up: In the past five years the various international partners and their space agencies have been conducting studies for developing a new international space station, this time based not in Earth orbit but located near the Moon.
Following initial approval in the fall of 2014, the five space agencies formed the ISS Exploration Capabilities Study Team, IECST, which was tasked with reviewing how the ISS experience could be used to build the cis-lunar infrastructure, with determining its possible architecture and with drafting its flight plan and possible mission. Specialists also had the task of looking at all the necessary technologies, logistics and maintenance which would be required for building and operating a small habitat near the Moon. This man-tended outpost could serve as a way station to the lunar surface and as a springboard for the exploration of the Solar System, including asteroids, Mars and its moons. In fact, the outpost itself could eventually embark on a journey toward a deep-space destination. Representatives of the various space agencies also tried to see what contributions each country could make, based on their technical capabilities and realistic budgets.
All the work was conducted within the ISS program and covered by its budget.
Initially, the IECST group included representatives from space agencies only, for the exception of Russia, with Roskosmos officials needed help from the nation’s prime contractor in human space flight — RKK Energia. For the final few meetings in 2016, ESA also brought representatives from the European space industry. However NASA did not directly involve its key human space flight contractors into the IECST activities. (Instead, the US aerospace companies Boeing and Lockheed Martin continued parallel studies in cooperation with RKK Energia in Russia, EADS Astrium in Europe and Mitsubishi in Japan.) [emphasis mine]
Read the whole article. Lots of interesting details.
In a sense, this international effort is a political lobbying effort by these space agencies to come up with a single project to follow ISS that will continue the funneling of government money to them all. It is also an effort by them to structure future space exploration so all efforts will be contained within this single program, rather than allowing for many different competing efforts, both private and public. In addition, it is an attempt by NASA to come up with some long-term mission for SLS/Orion, which at present has no operational purpose and no funding beyond its first manned flight in 2021.
Finally, note the highlighted sentence above. This effort — which will benefit not just NASA but the space agencies of Russia, Europe, and Japan as well as the old big space companies like Boeing, Lockheed Martin, and Mitsubishi — is been paid entirely by American tax dollars. Something about this to me seems wrong. Shouldn’t the cost here be shared? And doesn’t it seem inappropriate for NASA to be picking the companies it wants to work with, without open bidding?
Short circuit caused launch failure of Japanese mini-rocket
Japanese engineers now believe that the cause of the failure of that country’s test launch of a mini-rocket on January 15 was because of the failure of wiring insulation.
The agency said it believes the cladding of electric cables was damaged by the vibration and heat of nearby metal parts, leading the cables to directly touch the metal parts. As a result, a short circuit occurred and a data transmission device lost power, it said.
It is remarkable how much the language of this story reminds me of Soviet era press releases. Everything about it is designed to obscure the problem so that it will be difficult for outsiders to understand what happened.
From what I gather, the cables were not properly secured so that during launch they rubbed violently against some nearby sharp metal parts, which then cut the insulation and caused the short circuit. That they were not properly secured, a basic engineering requirement for any rocket, and that this announcement is written to obscure this fact, suggests once again that Japan’s space agency has some serious quality control problems that it is still not facing.
Japanese engineers now believe that the cause of the failure of that country’s test launch of a mini-rocket on January 15 was because of the failure of wiring insulation.
The agency said it believes the cladding of electric cables was damaged by the vibration and heat of nearby metal parts, leading the cables to directly touch the metal parts. As a result, a short circuit occurred and a data transmission device lost power, it said.
It is remarkable how much the language of this story reminds me of Soviet era press releases. Everything about it is designed to obscure the problem so that it will be difficult for outsiders to understand what happened.
From what I gather, the cables were not properly secured so that during launch they rubbed violently against some nearby sharp metal parts, which then cut the insulation and caused the short circuit. That they were not properly secured, a basic engineering requirement for any rocket, and that this announcement is written to obscure this fact, suggests once again that Japan’s space agency has some serious quality control problems that it is still not facing.
Countdown begins on India’s record-setting launch of 104 satellites
The competition heats up: ISRO has begun the countdown for Wednesday’s launch of India’s PSLV rocket, carrying a record-setting 104 satellites.
he Polar Satellite Launch Vehicle would be carrying a 714 kilogram main satellite for earth observation and 103 smaller “nano satellites” which would weigh a combined 664 kilograms. Nearly all of the nano satellites are from other countries, including Israel, Kazakhstan, The Netherlands, Switzerland, United Arab Emirates and 96 from United States, said the state-run ISRO.
If successful, India will set a world record as the first country to launch the most satellites in one go, surpassing Russia which launched 39 satellites in a single mission in June 2014.
Obviously, all these different satellites got a cut-rate launch deal by sharing the launch, which helps make their launch affordable. The disadvantage here is that they do not have much flexibility in choosing their orbits, which is why there is also a market now for small rockets aimed at launching single smallsats, such as Rocket Lab’s Electron.
The competition heats up: ISRO has begun the countdown for Wednesday’s launch of India’s PSLV rocket, carrying a record-setting 104 satellites.
he Polar Satellite Launch Vehicle would be carrying a 714 kilogram main satellite for earth observation and 103 smaller “nano satellites” which would weigh a combined 664 kilograms. Nearly all of the nano satellites are from other countries, including Israel, Kazakhstan, The Netherlands, Switzerland, United Arab Emirates and 96 from United States, said the state-run ISRO.
If successful, India will set a world record as the first country to launch the most satellites in one go, surpassing Russia which launched 39 satellites in a single mission in June 2014.
Obviously, all these different satellites got a cut-rate launch deal by sharing the launch, which helps make their launch affordable. The disadvantage here is that they do not have much flexibility in choosing their orbits, which is why there is also a market now for small rockets aimed at launching single smallsats, such as Rocket Lab’s Electron.
X-37B about to land?
Because of sudden Air Force preparations of the old space shuttle runway at Cape Canaveral it is now believed that the X-37B spacecraft presently in orbit for the past 21 months is about to come home.
The spacecraft has not yet landed, but recent orbital changes spotted by amateurs as well as runway preparations at the Cape all point to an end to the mission.
In preparation for landing at Kennedy, teams practiced landing drills and post-landing safing operations as well as emergency drills at the SLF [Shuttle Landing Facility] last week.
The X-37B landing also helps explain the until now curious delay to SpaceX’s launch of the SpX-10 resupply mission for the International Space Station which had originally been scheduled for the 14th as well – the opening day of the X-37B’s landing attempts at Kennedy. When the SpaceX mission was delayed, it was stated that range assets necessary for the return to launch site landing of the Falcon 9 core stage were not available from 14-17 February, while all other range assets necessary for launch were available during that window.
While the secretive nature of the mission precludes any exact knowledge of the ground track the X-37B will take, a descending node reentry over large portions of the United States is the likely option given the landing window for the restricted air space in and around the Kennedy Space Center.
If the X-37B lands this week, it will have completed the fourth such mission from the Air Force’s known fleet of two spacecraft. One did flights 1 and 3, while the other did flights 2 and 4.
Because of sudden Air Force preparations of the old space shuttle runway at Cape Canaveral it is now believed that the X-37B spacecraft presently in orbit for the past 21 months is about to come home.
The spacecraft has not yet landed, but recent orbital changes spotted by amateurs as well as runway preparations at the Cape all point to an end to the mission.
In preparation for landing at Kennedy, teams practiced landing drills and post-landing safing operations as well as emergency drills at the SLF [Shuttle Landing Facility] last week.
The X-37B landing also helps explain the until now curious delay to SpaceX’s launch of the SpX-10 resupply mission for the International Space Station which had originally been scheduled for the 14th as well – the opening day of the X-37B’s landing attempts at Kennedy. When the SpaceX mission was delayed, it was stated that range assets necessary for the return to launch site landing of the Falcon 9 core stage were not available from 14-17 February, while all other range assets necessary for launch were available during that window.
While the secretive nature of the mission precludes any exact knowledge of the ground track the X-37B will take, a descending node reentry over large portions of the United States is the likely option given the landing window for the restricted air space in and around the Kennedy Space Center.
If the X-37B lands this week, it will have completed the fourth such mission from the Air Force’s known fleet of two spacecraft. One did flights 1 and 3, while the other did flights 2 and 4.
A glimpse at China’s unmanned cargo freighter
The competition heats up: A Chinese state media report just released included footage showing China’s unmanned cargo freighter, Tianzhou-1, as engineers prepare it for its April launch to their test space station module, Tiangong-2.
Two important take-aways from this report. First, note in the simulation showing the docking of the freighter to Tiangong-2 the size comparison. The two craft are almost the same size, showing that Tiangong-2 really is nothing more than a test module, not large enough for long sustained space station operations. The freighter meanwhile is quite substantial.
Second, the report says they are aiming for a 2018 launch of the first module of their full size station.
The competition heats up: A Chinese state media report just released included footage showing China’s unmanned cargo freighter, Tianzhou-1, as engineers prepare it for its April launch to their test space station module, Tiangong-2.
Two important take-aways from this report. First, note in the simulation showing the docking of the freighter to Tiangong-2 the size comparison. The two craft are almost the same size, showing that Tiangong-2 really is nothing more than a test module, not large enough for long sustained space station operations. The freighter meanwhile is quite substantial.
Second, the report says they are aiming for a 2018 launch of the first module of their full size station.
Japan to try another launch of low-cost mini-rocket
The competition heats up: Japan has decided, following a January launch failure, to try another launch attempt in 2017 of a test of low-cost mini-rocket.
Participating businesses will likely bear the brunt of the 300 million yen to 500 million yen ($2.64 million to $4.4 million) launch cost, though the government will likely allocate funds as well. JAXA aims to have the rocket finished by autumn. It will soon plan out how to procure needed parts and build the vehicle in time for a 2017 launch, then submit the plan to the Ministry of Education, Culture, Sports, Science, and Technology. The ministry will secure a launch site accordingly, and a safety and inspections committee of its space division will review the plan.
January’s rocket was a three-stage version of the existing two-stage SS-520, modified to carry a miniature satellite. Off-the-shelf consumer product technology was incorporated to keep costs down. The rocket blasted off successfully. But during the first stage of the launch sequence, transmission of such critical data as its temperature and position ceased. The agency aborted the second stage, letting the vehicle fall into the ocean.
This second attempt, and the speed in which they appear to be gearing up to launch it, suggests that Japan might finally be recognizing that it has been failing badly in its efforts to participate in the new commercial launch market, and needs to energize its launch industry if it wants to participate in the exploration of the solar system.
The competition heats up: Japan has decided, following a January launch failure, to try another launch attempt in 2017 of a test of low-cost mini-rocket.
Participating businesses will likely bear the brunt of the 300 million yen to 500 million yen ($2.64 million to $4.4 million) launch cost, though the government will likely allocate funds as well. JAXA aims to have the rocket finished by autumn. It will soon plan out how to procure needed parts and build the vehicle in time for a 2017 launch, then submit the plan to the Ministry of Education, Culture, Sports, Science, and Technology. The ministry will secure a launch site accordingly, and a safety and inspections committee of its space division will review the plan.
January’s rocket was a three-stage version of the existing two-stage SS-520, modified to carry a miniature satellite. Off-the-shelf consumer product technology was incorporated to keep costs down. The rocket blasted off successfully. But during the first stage of the launch sequence, transmission of such critical data as its temperature and position ceased. The agency aborted the second stage, letting the vehicle fall into the ocean.
This second attempt, and the speed in which they appear to be gearing up to launch it, suggests that Japan might finally be recognizing that it has been failing badly in its efforts to participate in the new commercial launch market, and needs to energize its launch industry if it wants to participate in the exploration of the solar system.
Orbital ATK prepares Cape Canaveral launchpad for July Minotaur launch
The competition heats up: Orbital ATK crews on Sunday practiced stacking stages on a Cape Canaveral launchpad in preparation for a July Minotaur 4 launch of an Air Force surveillance satellite.
Teams this weekend stacked three inert Peacekeeper missiles stages on a launch stand similar to those that will make up the Minotaur IV rocket’s first three stages. Two more Orion 38 stages will fill out the rocket. On Sunday, the first three stages standing more than 50 feet tall were surrounded by puffy white covers that will keep the right temperature during the launch campaign’s summer heat.
Plans called for the mobile gantry to be rolled back on rails to its launch position before the stages are taken down on Monday.
Orbital ATK has been prevented from expanding its Minotaur 4 market beyond military launches because the rocket uses these available but now unused Peacekeeper missiles and is thus very inexpensive. Their competitors have been their influence in Congress to forbid their use commercially.
The competition heats up: Orbital ATK crews on Sunday practiced stacking stages on a Cape Canaveral launchpad in preparation for a July Minotaur 4 launch of an Air Force surveillance satellite.
Teams this weekend stacked three inert Peacekeeper missiles stages on a launch stand similar to those that will make up the Minotaur IV rocket’s first three stages. Two more Orion 38 stages will fill out the rocket. On Sunday, the first three stages standing more than 50 feet tall were surrounded by puffy white covers that will keep the right temperature during the launch campaign’s summer heat.
Plans called for the mobile gantry to be rolled back on rails to its launch position before the stages are taken down on Monday.
Orbital ATK has been prevented from expanding its Minotaur 4 market beyond military launches because the rocket uses these available but now unused Peacekeeper missiles and is thus very inexpensive. Their competitors have been their influence in Congress to forbid their use commercially.
SpaceX successfully completes Falcon 9 static fire test
SpaceX on Sunday successfully completed the launch dress rehearsal countdown and static fire test for its next Falcon 9 launch, which will loft a Dragon capsule to ISS and is set now for February 18.
The article at the link as well as a lot of other news organizations are making a big deal about the fact that this launch is taking place at the LC-39A launchpad, used during the Apollo program as well as by the shuttle. While the historic background is interesting, of more significance to me is that this test brings SpaceX closer to having two operational pads in Florida, one of which (LC-39A) is configured for Falcon Heavy launches.
SpaceX on Sunday successfully completed the launch dress rehearsal countdown and static fire test for its next Falcon 9 launch, which will loft a Dragon capsule to ISS and is set now for February 18.
The article at the link as well as a lot of other news organizations are making a big deal about the fact that this launch is taking place at the LC-39A launchpad, used during the Apollo program as well as by the shuttle. While the historic background is interesting, of more significance to me is that this test brings SpaceX closer to having two operational pads in Florida, one of which (LC-39A) is configured for Falcon Heavy launches.
New Horizons enters safe mode
Because of a “command-loading error” New Horizons entered safe mode on February 9 and has been slowly recovering since.
Engineers appear confident that all is well and that full operations should resume by the end of today.
Because of a “command-loading error” New Horizons entered safe mode on February 9 and has been slowly recovering since.
Engineers appear confident that all is well and that full operations should resume by the end of today.
North Korea test fires another ballistic missile
Does this make you feel safer? North Korea today test fired a ballistic missile.
Few details about the test are known at this time, including how far the missile flew and what type of missile it was.
Does this make you feel safer? North Korea today test fired a ballistic missile.
Few details about the test are known at this time, including how far the missile flew and what type of missile it was.
China to test unmanned space freighter in April
China has announced that the first test flight of its unmanned Tianzhou-1 cargo freighter will take place in April.
The spacecraft will rendezvous and dock with the their test space station module, Tiangong-2, where it will then test its ability to refuel the space station.
China has announced that the first test flight of its unmanned Tianzhou-1 cargo freighter will take place in April.
The spacecraft will rendezvous and dock with the their test space station module, Tiangong-2, where it will then test its ability to refuel the space station.
Trump to the Moon!
Two stories in the past two days strongly suggest that the Trump administration is planning a two-pronged space policy approach, with the long-term goal of shifting most of space to private operations.
- Trump advisers’ space plan: To moon, Mars and beyond
- Trump’s Advisers Want to Return Humans to the Moon in Three Years
From the first link:
The more ambitious administration vision could include new moon landings that “see private American astronauts, on private space ships, circling the Moon by 2020; and private lunar landers staking out de facto ‘property rights’ for American on the Moon, by 2020 as well,” according to a summary of an “agency action plan” that the transition drew up for NASA late last month. Such missions would be selected through an “internal competition” between what the summary calls Old Space, or NASA’s traditional contractors, and New Space characterized by SpaceX and Blue Origin. But the summary also suggests a strong predilection toward New Space. “We have to be seen giving ‘Old Space’ a fair and balanced shot at proving they are better and cheaper than commercial,” it says.
Another thrust of the new space effort would be to privatize low-Earth orbit, where most satellites and the International Space Station operate — or a “seamless low-risk transition from government-owned and operated stations to privately-owned and operated stations.” “This may be the biggest and most public privatization effort America has ever conducted,” it says.
Essentially, they are going to do exactly what I suggested back in late December, give SLS/Orion a short-term realistic goal of going to the Moon. This is what it was originally designed for, and it is the only technology presently available that has even the slightest chance of meeting the three year deadline outlined above. More important, this will give Congress something in the negotiations, as SLS/Orion has been Congress’s baby — pushed and funded by Congress over the objections of the previous administration and without a clear mission to go anywhere — in order to keep the money stream flowing to the big “Old Space” companies like Boeing and Lockheed Martin. Obama tried to simply cancel its predecessor, Constellation, and that did not sit well with Congress. Trump however understands negotiation and how to play the game. In order to eventually eliminate SLS Trump is going to provide Congress some short term excitement and some viable long term alternatives.
The long term alternatives will be private enterprise. Even as they send SLS/Orion on its grand finale to the Moon, the Trump administration will accelerate the restructuring of NASA to make the agency less of a design and construction operation and more a mere customer of private space. All non-military Earth orbital operations will be shifted to the private sector over time, so that once SLS/Orion has achieved that goal of completing a lunar mission there will be a strong enough private space sector to replace it, allowing Congress to let it go the way of Apollo and the space shuttle.
Lockheed Martin screwup delays delivery of Air Force GPS satellites
Our government in action! Incompetence by a Lockheed Martin subcontractor will delay the delivery of 32 new Air Force GPS satellites and will likely cost the government millions.
Lockheed has a contract to build the first 10 of the satellites designed to provide a more accurate version of the Global Positioning System used for everything from the military’s targeting of terrorists to turn-by-turn directions for civilians’ smartphones. The program’s latest setback may affect a pending Air Force decision on whether to open the final 22 satellites to competition from Lockheed rivals Boeing Co. and Northrop Grumman Corp. “This was an avoidable situation and raised significant concerns with Lockheed Martin subcontractor management/oversight and Harris program management,” Teague said in a Dec. 21 message to congressional staff obtained by Bloomberg News.
The parts in question are ceramic capacitors that have bedeviled the satellite project. They take higher-voltage power from the satellite’s power system and reduce it to a voltage required for a particular subsystem. Last year, the Air Force and contractors discovered that Harris hadn’t conducted tests on the components, including how long they would operate without failing, that should have been completed in 2010.
Now, the Air Force says it found that Harris spent June to October of last year doing follow-up testing on the wrong parts instead of samples of the suspect capacitors installed on the first three satellites. Harris “immediately notified Lockheed and the government” after a post-test inspection, Teague said in his message.
So, the subcontractor first failed to do the required tests, then it did the tests on the wrong parts. Sounds like the kind of quality control problems we have seen recently in Russia and Japan.
The worst part? The contract is a cost-plus contract, which means the government has to absorb the additional costs for fixing the screw-up, not Lockheed Martin or its subcontractor.
Our government in action! Incompetence by a Lockheed Martin subcontractor will delay the delivery of 32 new Air Force GPS satellites and will likely cost the government millions.
Lockheed has a contract to build the first 10 of the satellites designed to provide a more accurate version of the Global Positioning System used for everything from the military’s targeting of terrorists to turn-by-turn directions for civilians’ smartphones. The program’s latest setback may affect a pending Air Force decision on whether to open the final 22 satellites to competition from Lockheed rivals Boeing Co. and Northrop Grumman Corp. “This was an avoidable situation and raised significant concerns with Lockheed Martin subcontractor management/oversight and Harris program management,” Teague said in a Dec. 21 message to congressional staff obtained by Bloomberg News.
The parts in question are ceramic capacitors that have bedeviled the satellite project. They take higher-voltage power from the satellite’s power system and reduce it to a voltage required for a particular subsystem. Last year, the Air Force and contractors discovered that Harris hadn’t conducted tests on the components, including how long they would operate without failing, that should have been completed in 2010.
Now, the Air Force says it found that Harris spent June to October of last year doing follow-up testing on the wrong parts instead of samples of the suspect capacitors installed on the first three satellites. Harris “immediately notified Lockheed and the government” after a post-test inspection, Teague said in his message.
So, the subcontractor first failed to do the required tests, then it did the tests on the wrong parts. Sounds like the kind of quality control problems we have seen recently in Russia and Japan.
The worst part? The contract is a cost-plus contract, which means the government has to absorb the additional costs for fixing the screw-up, not Lockheed Martin or its subcontractor.
Iran tests short range missile
Does this make you feel safer? Iran today launched a short range Mersad surface-to-air missile on a 35 mile test flight.
The launch took place on the same launchpad where earlier in the week they had placed and then removed an orbital Safir rocket, designed to put satellites into orbit. Why they removed it and launched the short range missile instead remains unknown
Does this make you feel safer? Iran today launched a short range Mersad surface-to-air missile on a 35 mile test flight.
The launch took place on the same launchpad where earlier in the week they had placed and then removed an orbital Safir rocket, designed to put satellites into orbit. Why they removed it and launched the short range missile instead remains unknown
SpaceX sets February 18 for next Falcon 9 launch
SpaceX has scheduled its next launch, and first from Florida since the September 1 launchpad explosion, for February 18.
This will also be the company’s first launch from the former Apollo and shuttle launchpad that it now leases.
SpaceX has scheduled its next launch, and first from Florida since the September 1 launchpad explosion, for February 18.
This will also be the company’s first launch from the former Apollo and shuttle launchpad that it now leases.
How Differential Gear works
An evening pause: Though the first 1:50 of this very well done 1930s industrial is somewhat irrelevant and can be skipped, I think it is worth watching anyway. And the rest does a great job of explaining this mysterious piece of automobile equipment.
Hat tip Edward Thelen.
Orbital ATK sues DARPA over its satellite repair program
Orbital ATK has filed a lawsuit against the Defense Department’s DARPA division over its satellite repair program that is apparently going to award a contract to a Canadian company to develop a system for using robots to repair orbiting satellites.
Orbital argues that the federal program, called the Robotic Servicing of Geosynchronous Satellites, would unfairly compete with its own privately funded effort, a system called the Mission Extension Vehicle 1, backed by at least $200 million from investors. The company has set up at a production facility in Northern Virginia, with a launch planned for next year.
DARPA wants to build out a government-funded program of its own, and is close to awarding a contract to a company that Orbital views as a competitor. In a contract announcement briefly posted on the agency’s website, DARPA said it is awarding a $15 million contract to Space Systems/Loral (SSL), a U.S. subsidiary of Canadian aerospace firm MacDonald, Dettwiler and Associates. DARPA spokesman Jared B. Adams said the contract award was posted in error and elements of the deal are still being worked on.
In its lawsuit, Orbital alleges that the contract violates federal policy against creating government space programs that compete with existing commercial ones. “The U.S. National Space Policy explicitly directs government agencies to avoid funding activities that are already in development in the commercial marketplace,” the company said in a statement. “Orbital ATK will continue to pursue all available options to oppose DARPA from moving forward with this illegal and wasteful use of U.S. taxpayer dollars.”
DARPA normally pushes projects that no one is doing, either because the work is too experimental or can’t yet make a profit. In this case however it appears that this is not the case. Worse (from a political perspective), they are awarding the contract to a non-American company. I would not be surprised if Congress soon steps in and shuts this particular DARPA project down.
Orbital ATK has filed a lawsuit against the Defense Department’s DARPA division over its satellite repair program that is apparently going to award a contract to a Canadian company to develop a system for using robots to repair orbiting satellites.
Orbital argues that the federal program, called the Robotic Servicing of Geosynchronous Satellites, would unfairly compete with its own privately funded effort, a system called the Mission Extension Vehicle 1, backed by at least $200 million from investors. The company has set up at a production facility in Northern Virginia, with a launch planned for next year.
DARPA wants to build out a government-funded program of its own, and is close to awarding a contract to a company that Orbital views as a competitor. In a contract announcement briefly posted on the agency’s website, DARPA said it is awarding a $15 million contract to Space Systems/Loral (SSL), a U.S. subsidiary of Canadian aerospace firm MacDonald, Dettwiler and Associates. DARPA spokesman Jared B. Adams said the contract award was posted in error and elements of the deal are still being worked on.
In its lawsuit, Orbital alleges that the contract violates federal policy against creating government space programs that compete with existing commercial ones. “The U.S. National Space Policy explicitly directs government agencies to avoid funding activities that are already in development in the commercial marketplace,” the company said in a statement. “Orbital ATK will continue to pursue all available options to oppose DARPA from moving forward with this illegal and wasteful use of U.S. taxpayer dollars.”
DARPA normally pushes projects that no one is doing, either because the work is too experimental or can’t yet make a profit. In this case however it appears that this is not the case. Worse (from a political perspective), they are awarding the contract to a non-American company. I would not be surprised if Congress soon steps in and shuts this particular DARPA project down.
Democrats in Pima County vote to appeal World View court decision
The Pima County Board of Supervisors in Arizona has voted 3-2 on a party-line vote to appeal a judge’s decision that canceled the county’s deal with the space tourism balloon company World View because it violated state law.
The Pima County Board of Supervisors voted 3-2 to appeal a Superior Court decision which concluded the county violated state law when it signed an agreement and lease with World View, a space exploration company located near the Tucson International Airport.
The vote was along party lines, with the three Democrats voting for the appeal and the two Republicans voting against it.
The court ruled the county did not comply with a law which requires the county to appraise the property, hold a public auction, and negotiate a fair rental price before it agreed to build a $15 million complex for the company.
It seems to me that — rather than fight this in court — the smart thing to do here is to work out a new agreement that does not violate the law, something that the county was able to do with its lease agreements with Vector Space Systems. This apparently was what the Republicans on the board were proposing. Instead, the Democrats have chosen to fight, even though that will delay things further and is likely to fail in court anyway.
The Pima County Board of Supervisors in Arizona has voted 3-2 on a party-line vote to appeal a judge’s decision that canceled the county’s deal with the space tourism balloon company World View because it violated state law.
The Pima County Board of Supervisors voted 3-2 to appeal a Superior Court decision which concluded the county violated state law when it signed an agreement and lease with World View, a space exploration company located near the Tucson International Airport.
The vote was along party lines, with the three Democrats voting for the appeal and the two Republicans voting against it.
The court ruled the county did not comply with a law which requires the county to appraise the property, hold a public auction, and negotiate a fair rental price before it agreed to build a $15 million complex for the company.
It seems to me that — rather than fight this in court — the smart thing to do here is to work out a new agreement that does not violate the law, something that the county was able to do with its lease agreements with Vector Space Systems. This apparently was what the Republicans on the board were proposing. Instead, the Democrats have chosen to fight, even though that will delay things further and is likely to fail in court anyway.
An orbital change extends the life of India’s Mars orbiter
An orbital maneuver has allowed India’s Mars Orbiter Mission avoid an eight hour period with no sunlight — thus draining its batteries — so that the mission can be extended until 2020.
The on-board battery which was to take over had a life of just about 1.4 hours, while the eclipse was to last for 8 hours. The spacecraft’s future was bleak.
The scientists thought of a solution. On the night of January 17, a team of eight engineers at Indian Space Research Organisation’s Telemetry, Tracking and Command Network, Bengaluru, sent a time-delayed command to the Mars probe. The command set in motion firing of eight on-board thruster rockets. Each of them were fired for 431 seconds, pushing the Mars Orbiter Mission (MOM) space probe to a new orbit that completely avoids an eclipse up to September 2017. The shadowing in September is of a smaller duration, which the satellite’s batteries can handle. “Because of the crucial orbital change, the MOM now gets three additional years’ life. We are expecting it to transmit data till 2020,” Isro chairman A S Kiran Kumar told DH.
The mission’s science data is not as important as the experience it is giving Indian engineers in operating a planetary probe remotely from Earth. This success speaks well for the future of India’s space effort.
An orbital maneuver has allowed India’s Mars Orbiter Mission avoid an eight hour period with no sunlight — thus draining its batteries — so that the mission can be extended until 2020.
The on-board battery which was to take over had a life of just about 1.4 hours, while the eclipse was to last for 8 hours. The spacecraft’s future was bleak.
The scientists thought of a solution. On the night of January 17, a team of eight engineers at Indian Space Research Organisation’s Telemetry, Tracking and Command Network, Bengaluru, sent a time-delayed command to the Mars probe. The command set in motion firing of eight on-board thruster rockets. Each of them were fired for 431 seconds, pushing the Mars Orbiter Mission (MOM) space probe to a new orbit that completely avoids an eclipse up to September 2017. The shadowing in September is of a smaller duration, which the satellite’s batteries can handle. “Because of the crucial orbital change, the MOM now gets three additional years’ life. We are expecting it to transmit data till 2020,” Isro chairman A S Kiran Kumar told DH.
The mission’s science data is not as important as the experience it is giving Indian engineers in operating a planetary probe remotely from Earth. This success speaks well for the future of India’s space effort.