Tag: engineering

Rogozin’s order banning Russian astronauts from using European robot arm cancelled

1:12 pm

A planned spacewalk tomorrow to configure the new European robot arm on the Russian section of ISS essentally proves that the order by the recently fired head of Roscosmos, Dmitry Rogozin, forbidding the station’s Russian astronauts from doing any work with that European robot arm has now been cancelled.

A Russian cosmonaut and an Italian astronaut are finalizing preparations for a spacewalk on Thursday to configure the International Space Station’s third and newest robotic arm. As the pair was being assisted by two cosmonauts the rest of the Expedition 67 crew ensured ongoing advanced space research was proceeding full speed ahead aboard the orbiting lab.

Station Commander Oleg Artemyev of Roscosmos and Flight Engineer Samantha Cristoforetti of ESA (European Space Agency) are scheduled to exit the space station into the vacuum of space at 10 a.m. EDT on Thursday. The spacewalkers will spend about seven hours readying the European robotic arm for operations on the station’s Russian segment. The duo will also deploy 10 nanosatellites to collect radio electronics data. [emphasis mine]

Though I suspect no official announcement will be made, it is likely that the new head of Roscosmos, Yuri Borisov, had quietly made it clear to all involved to proceed with the necessary work, as if Rogozin’s order had never been made.

4 comments

Martian terraces

12:51 pm

Overview map
Glacier country on Mars

Martian terraces
Click for full image.

Cool image time! The photo to the right, cropped and reduced to post here, was taken on May 17, 2022 by the high resolution camera on Mars Reconnaissance Orbiter (MRO). It shows what the scientists have labeled “Dipping layers against mound in Deuteronilus Mensae.”

Deuteronilus is the westernmost mensae region in the 2,000-mile-long strip of heavy glaciers found in the northern mid-latitudes that I dub glacier country. This photo, the location of which is marked by the white cross on the overview map above, is another example, though somewhat strange and puzzling. Normally the layers will dip away from the high point. Here, the layers dip towards the mound. I can think of only one explanation, that of prevailing winds causing the erosion in this unusual manner, but I also find that explanation very unsatisfactory.

The layers themselves illustrate the cycles that have shaped Martian geology, caused by the wide swings in the planet’s rotational tilt, from 11 to 60 degrees. When that tilt is high, the poles are warmer than the mid-latitudes, and water ice migrates from the poles towards the equator. When the tilt is low, the mid-latitudes are warmer, and the water ice heads back towards the poles. Thus, the many many layers the orbiters and rovers are now finding everywhere on Mars.

Right now scientists think, because Mars’ tilt is in the middle of these swings at 25 degrees, the planet is in equilibrium, with the water at the poles and mid-latitudes essentially going no where. This conclusion however is not yet confirmed.

Leave a comment

NRO delays Rocket Lab launch

9:21 am

Capitalism in space: Because it wishes to install software updates to its payload, the National Reconnaissance Office (NRO) has told Rocket Lab to stand down from a planned Electron rocket launch scheduled for July 22, 2022.

This launch had been purchased by NRO as part of a two-launch deal, designed to allow Rocket Lab to demonstrate its ability to quickly schedule and launch two different NRO missions only ten days apart. The first launch took place on July 13th. And it appears that Rocket Lab is prepared to do that second launch, whenever NRO gives it the go-ahead, suggesting the company has fulfilled its part of the bargain.

Leave a comment

Ispace now aiming for a November ’22 launch of its lunar lander

9:14 am

Capitalism in space: The private Japanese company Ispace today announced that it is targeting November 2022 for the launch of its Hakuto-R lunar lander, carrying commercial as well as governmental payloads.

The launch will be on a Falcon 9 rocket. The payload includes two small rovers, one built by Ispace and a second, Rashid, built by the United Arab Emirates (UAE).

Rashid has already been delivered to SpaceX. This announcement indicates that Hakuto-R is on schedule for delivery in time for that November launch.

Both rovers are engineering tests, and will are expected to only function on the Moon for one lunar day.

Leave a comment

NASA awards SpaceX’s Falcon Heavy launch contract for Roman Space Telescope

8:57 am

Capitalism in space: NASA yesterday awarded a contract to SpaceX to use its Falcon Heavy rocket to launch the Roman Space Telescope in October 2026.

. The total cost for NASA to launch the Roman telescope is approximately $255 million, which includes the launch service and other mission related costs. The telescope’s mission currently is targeted to launch in October 2026, as specified in the contract, on a Falcon Heavy rocket from Launch Complex 39A at NASA’s Kennedy Space Center in Florida.

SpaceX’s normal launch price for the Falcon Heavy is $100 million. This higher price in probably because NASA has imposed additional requirements. It is also likely because SpaceX has no comparable competitor, and can raise its price in certain situations — such as when the government is buying — because no one can undercut it.

That launch by the way will not happen in ’26. Roman is certain to be delayed further. It was proposed in 2011 as a major astronomy project for that decade. Instead, as expected it has become a two-decade long jobs program like Webb.

3 comments

Perseverance gains a little height

11:47 am

View of Jezero Crater from Perseverance
Click for full image.

Overview map
Click for interactive map.

Cool image time! The photo above, rotated and cropped to post here, was taken on July 18, 2022 by the right navigation camera on the Mars rover Perseverance.

The view isn’t that remarkable, when compared to many other pictures from Mars. What makes it newly interesting is that it shows that Perseverance has gained a little elevation as it explores the base of the delta that flowed into Jezero Crater. It is no longer on the crater floor, but above it, though not by much.

You can see the far rim of Jezero Crater in the distance, obscured somewhat by the dust that builds up in the Martian atmosphere during the winter. You can also see the gentle left-to-right downward slope of material that flowed down from that delta some time in the past. Also, though the resolution isn’t good enough to show it, the helicopter Ingenuity probably sits somewhere near the center of this picture, just to the right of the nose of the biggest ridgeline.

The overview map on the right gives the context, with the yellow lines showing my estimate of the area viewed by the picture above. The blue dot is Perseverance, the green dot is Ingenuity. The red dotted line is my present guess as to the planned route of Perservance up onto the delta.

2 comments

Relativity signs deal to launch Impulse Space’s missions to Mars

10:20 am

Capitalism in space: The commercial rocket startup Relativity has now signed a deal with the orbital tug startup Impulse Space to launch at least one mission to Mars, possibly as early as 2024.

Impulse Space has announced that the company will launch the first commercial payload to Mars on board Relativity Space’s Terran R rocket. Under the new partnership, Relativity will launch Impulse’s Mars Cruise Vehicle and Mars Lander from Cape Canaveral, Florida, as part of an exclusive agreement until 2029.

The earliest anticipated launch window occurs between 2024 and 2025 and would make use of Relativity’s fully reusable Terran R rocket launching from Space Launch Complex 16 (SLC-16) at the Cape Canaveral Space Force Station.

Terran R is planned to complete the trans-Mars injection burn to place the cruise vehicle, carrying the lander, on a trajectory toward Mars. The cruise vehicle will then separate from the lander that, protected by an aeroshell, will enter the Martian atmosphere and attempt to propulsively land on the surface of the red planet.

To say that this plan is tentative is to state the obvious. First, Relativity has not yet launched its first rocket. It hopes to do so before the end of this year, but that rocket is the Terran-1, much smaller than the proposed Terran-R. Second, Impulse itself has not yet launched any tugs, though its founder, Tom Mueller, was the head engine development at SpaceX when it developed the Merlin, Draco, Super Draco, and Raptor engines. After leaving SpaceX he created Impulse Space to provide orbital and interplanetary transportation for others. It appears he has decided that an early Mars mission will be the best way to put his company on the map.

4 comments

Long March 5B rolls to launchpad, carrying China’s next large space station module

9:59 am

Long March 5B being rolled to launch site
Long March 5B being rolled to launch site

China’s big Long March 5B rocket was successfully rolled to its launch site yesterday in preparation for a July 24, 2022 launch that will put China’s next large space station module, Wentian, into orbit.

The Wentian module, with a launch weight near 44,000 pounds (20 metric tons), will dock with the Tianhe core module on China’s Tiangong station in low Earth orbit. Chinese astronauts Chen Dong, Liu Yang, and Cai Xuzhe living on the Tiangong complex will monitor Wentian’s arrival, then become the first crew members to float into the station’s new module.

The launch this weekend will add the second of three large pressurized modules needed to complete the initial construction of the Tiangong space station. The Tianhe core module launched on a Long March 5B rocket in April 2021, and Chinese ground teams are preparing the Mengtian module for launch on a Long March 5B rocket in October.

The big question mark however concerning this upcoming launch is the central core stage of the Long March 5B, seen in the picture above surrounded by four strap-on boosters with Wentian stacked on top. In all previous Long March 5B launches, that core stage reached orbit, deployed its payload, and then crashed to Earth uncontrolled because its main engines could not be restarted. Will this core stage do the same?

The name of this particular Long March 5B also carries with it a new suffix, “Y3”. In the past when the Chinese added letters to a name it was because the rocket had been changed or upgraded in some manner. Furthermore, in March China did some static fire engine tests of what were suggested to be new engines for the core stage.

Developed by the China Aerospace Science and Technology Corporation, the engine is designed for the core stage of the Long March-5 carrier rocket series, which will be used to launch two lab modules of China’s orbiting Tiangong space station this year.

The long-range test, lasting 520 seconds, has verified the reliability of the engine, and there will be more than 20 experimental tasks that the rocket engine will undergo to further test its performance, the company disclosed.

Based on this meager information, it appears that China might have upgraded the core stage’s engines so they can be restarted and the stage’s de-orbit can be controlled so it crashes over the ocean, not over some random point of inhabited land. We shall have to wait until after the launch on July 24th to find out.

8 comments

The May micrometeoroid impact on Webb’s mirror

9:37 am

Figure 3 from report

In a detailed report [pdf] of Webb’s overall excellent operational status following its in-space commissioning, the science team also included an analysis of the May 2022 micrometeoriod impact on one segment of Webb’s mirror.

The image to the right, taken from figure 3 of the report, shows the remaining alignment error of Webb’s entire mirror, after alignment. Except for that one bright spot in the segment to the lower right, all of the segments show excellent alignment, well within the range predicted before launch. The bright spot however is from the impact, and suggests that one mirror segment is significantly damaged. From the report:

The micrometeoroid which hit segment C3 in the period 22—24 May 2022 UT caused significant uncorrectable change in the overall figure of that segment. However, the effect was small at the full telescope level because only a small portion of the telescope area was affected. After two subsequent realignment steps, the telescope was aligned to a minimum of 59 nm rms, which is about 5-10 nm rms above the previous best wavefront error rms values 7 . It should be noted that the drifts and stability levels of the telescope mean that science observations will typically see telescope contribution between 60 nm rms (minimum) and 80 nm rms (where WF control will typically be performed). Further, the telescope WFE combines with the science instrument WFE to yield total observatory levels in the range 70-130 nm (see Table 2), so the slight increase to telescope WFE from this strike has a relatively smaller effect on total observatory WFE.

In plain English, the impact while damaging has not seriously reduced the telescope’s predicted capabilities.

However, to be hit with this size impact so soon after launch is very worrisome, especially because Webb’s mirror is not housed in any protective tube like Hubble or most telescopes. From the report:

It is not yet clear whether the May 2022 hit to segment C3 was a rare event (i.e. an unlucky early strike by a high kinetic energy micrometeoroid that statistically might occur only once in several years), or whether the telescope may be more susceptible to damage by micrometeoroids than pre-launch modeling predicted.

The science team is presently trying to anticipate what might happen if the impact rate turns out to be much higher than expected, and what can be done to mitigate the degradation of the mirror should more impacts occur.

8 comments

Russia may delay its Luna-25 lander again

9:10 am

The landing area for Luna-25
The landing zone for Luna-25 at Boguslawsky Crater

According to Russia’s state run media, Roscosmos is considering delaying its Luna-25 lander again from September ’22 to sometime next year because of recently discovered issues with its landing system.

The launch of Russia’s lunar mission Luna 25 will most likely be pushed back to 2023 at the earliest because recent tests of its soft-landing device showed it failed to meet requirements, two sources in the space industry told TASS.

The Doppler speed and distance sensor made by the Vega Concern, part of the Rostech State Corporation, was tested in May and June and underperformed in terms of measurement precision, the sources said. The current precision would give 80% probability of a successful landing while the desired specifications call for a higher probability, which means either the device or the landing plan will have to be reworked.

The launch of this lunar lander has been delayed repeatedly, though the recently deposed head of Roscosmos, Dmitry Rogozin, had said as recently as late May that the September launch date was firm. It could very well be that with his removal the new head, Yuri Borisov, took another look and decided this new delay was necessary.

3 comments

NASA delays launch of its VIPER lunar rover to over concerns about commercial lander

8:58 am

VIPER's planned route on the Moon
VIPER’s planned route at the Moon’s south pole

In order to do more engineering tests of Astrobotic’s Griffin lunar lander, NASA has now delayed the launch of its VIPER lunar rover from November 2023 to November 2024.

NASA’s decision to pursue a 2024 delivery date results from the agency’s request to Astrobotic for additional ground testing of the company’s Griffin lunar lander, which will deliver VIPER to the lunar surface through CLPS. The additional tests aim to reduce the overall risk to VIPER’s delivery to the Moon. To complete the additional NASA-mandated tests of the Griffin lunar lander, an additional $67.8 million has been added to Astrobotic’s CLPS contract, which now totals $320.4 million.

Though the press release makes no mention of it, the launch of Astrobotic’s Griffin lander is partly dependent on the launch of Astrobotic’s first and smaller lunar lander, Peregrine, which was originally supposed to fly on the inaugural flight of ULA’s new Vulcan rocket, in 2021. That rocket’s first flight however has been delayed repeatedly because of delays by Blue Origin in completing development of the BE-4 rocket engine, to be used in Vulcan’s first stage. It is presently scheduled for early 2023, but that date remains tentative. This new delay of Griffin could be to make sure Peregrine flies first.

Regardless, this new budget increase means that the budget for Griffin has experienced a 62% cost overrun from its original $199 million number. This large increase in what is supposed to be a fixed price contract suggests that Astrobotic has been having some problems unstated by NASA, despite an inspector general report [pdf] that said all was going reasonably well.

5 comments

UAE earmarks $820 million for space-related projects

10:40 am

The new colonial movement: The government of the United Arab Emirates (UAE) announced yesterday that it has budgeted $820 million for its space program, with the first project to be a constellation of Earth observation satellites.

Its first project will be to build a constellation of advanced imaging satellites, to be named Sirb, an Arabic term for a flock of birds. They will be used for environmental and land usage monitoring, data collection, and analysis. “These small-scale satellites are more agile, faster to develop and more powerful – an indicator of the types of new generation systems that technology is now making possible,” Al Amari said, noting the satellite’s use of SAR (synthetic aperture radar) technology.

The goal is to launch the first satellite by 2025, with the constellation completed by 2028.

It is not stated how else this allocated money will be spent, since such a constellation of smallsats should not cost almost a billion dollars to build.

2 comments

Chinese university tests hypersonic space plane

10:30 am

fietian-1, Chinese spaceplane

According to social media reports, a Chinese university, Northwestern Polytechnical University (NPU), successfully tested on July 4, 2022 a prototype hypersonic prototype that uses both rocket and scramjet engines, as explained at this report:

What is particularly interesting about the launch of Feitian-1 is that it uses an RBCC [Rocket-Based Combined Cycle] engine to propel it to speeds in excess of Mach 5. An RBCC engine is a combination of an air-breathing ramjet, air-breathing scramjet, and ducted rocket. As the vehicle accelerates, the engine transfers from one mode to the next, allowing it to cope with air hitting the intake at greater and greater speed, and then becoming a pure rocket at top speed and very high altitudes.

The two images shown above are an attempt to get a sense of scale for this rocket. I think it is smaller than the Chinese wish us to believe, probably less than fifty feet tall, as stacked. Note the buildings in the right image. Other images showed no tower or strongback, also suggesting a small rocket. Moreover, all the released images hide the base of the rocket, suggesting there are attachments there the Chinese do not wish us to see, probably fuel and communications lines, all of which would help determine scale.

Finally, the upper stage, which I estimate to be no more than fifteen feet long, is purposely photographed from the side to hide its likely spaceplane appearance. This spaceplane look suggests this particular engineering research is at least superficially commercial and not military, connected more with the effort in China to develop hypersonic planes. That the Chinese government allowed this much information to be released also tells us that this particular prototype is not specifically military in nature.

This is not to say that the technology will not be adapted for military use. It certainly will be. NPU and its Institute of Spaceplanes and Hypersonic Technologies is also sanctioned by the U.S. government because of its ties to China’s military.

The US sanctions list frequently includes Northwestern Polytechnical University among the sanctioned entities from China. The University’s staff and students are not allowed to purchase or use commodities made in the US, including mathematical software.

Despite being a space plane test of the small prototype hypersonic rocket, this is the first reliable report from China that I have seen of such a suborbital test. Previous reports, despite being heavily touted by the U.S. military and accepted without question by the mainstream press, were unconfirmed and appeared untrustworthy. This report, showing proof of a suborbital test of what looks like a smaller scaled prototype I think gives us a more accurate picture of China’s present capabilities in this technology. They are moving fast, but are not there yet.

5 comments

SpaceX completes 31st launch in 2022, matching its entire output in 2021

12:17 pm

Capitalism in space: SpaceX today successfully launched 53 Starlink satellites with its Falcon 9 rocket, completing its 31st launch in 2022, matching the company’s entire output for all 2021 in only a little more than six months.

The first stage completed its 13th mission.

The leaders in the 2022 launch race:

31 Space
23 China
9 Russia
5 Rocket Lab
4 ULA

American private enterprise now leads China 44 to 23 in the national rankings, and the entire world combined 44 to 39.

SpaceX is targeting 60 launches in 2022. With the year just a little more than half over, it is setting a pace capable of achieving that goal.

7 comments

Layered mesa on Mars

12:57 pm

Layered mesa on Mars
Click for full image.

Cool image time! The photo to the right, cropped and reduced to post here, was taken on May 26, 2022 by the high resolution camera on Mars Reconnaissance Orbiter (MRO). It shows a mesa about three quarters of a mile in length that appears to be many-layered, from top to bottom.

The brightness of the mesa, compared to the surrounding plains, also emphasizes the different layers, though in this case it suggests two major epochs where the material being laid down in each was fundamentally different.

Or the difference could simply mean that the surrounding terrain is covered with dust, hiding its true color.

There is no question that winds in the thin Martian atmosphere have contributed to the erosion that formed this mesa, much like the buttes in the American southwest are shaped by winds. Whether water was a factor for this Martian butte is far less certain.

The overview map below provides context.
» Read more

One comment

Virgin Galactic leases facility in Arizona to build up to six of its reusable suborbital space planes

9:13 am

Capitalism in space: Virgin Galactic announced on July 14, 2022 that it has leased a new facility in Mesa, Arizona where it will build up to six of its reusable suborbital space planes, with the goal of beginning commercial flights by late 2025.

The Delta class spaceship is Virgin Galactic’s production vehicle that is designed to fly weekly, supporting the Company’s target of 400 flights per year from Spaceport America. Based on current schedules, the first of these ships is expected to commence revenue-generating payload flights in late 2025, progressing to private astronaut flights in 2026.

The Company is currently selecting various suppliers to build the spaceship’s major subassemblies, which will be delivered to the new Mesa facility for final assembly. Virgin Galactic motherships will ferry completed spaceships to Spaceport America, New Mexico for flight test and commercial operation.

Combined with its recent contract award to Aurora to build two new motherships, it appears the management that replaced Richard Branson at Virgin Galactic has found that it can’t really proceed with commercial operations with the ships Branson left behind. Apparently the company is working to replace everything, and will likely delay commercial operations another few years in the process.

These decisions might be smart, but considering the company’s long history of endless delays, the buying public and the investment community might not be willing to tolerate more delays. It also remains very questionable there is enough business to justify its prediction of 400 flights per year, even if the company loses no customers.

8 comments

Masten lays off staff, apparently shuts down

9:02 am

Capitalism in space: The small lunar lander company Masten Space Systems, which for years has worked to develop vertical rocket landing technology and has a $75.9 million contract with NASA to put a rover on the Moon, has apparently furloughed its staff and shut down operations.

The XL-1 lander was originally scheduled to launch in December 2022 bound for a landing at the moon’s south pole. In June 2021, Masten announced an 11-month launch delay to November 2023. The company said the delay was caused by industry-wide supply chain disruptions and the effects of the ongoing COVID-19 pandemic.

CLPS partners are expected to supplement NASA mission funding by carrying payloads for other parties. The source who requested anonymity said that is where Masten’s mission ran into problems. “We ran out of money after grossly underbidding. The estimate was $105 million but I was told that we had found a 30 million dollar private customer who wanted to fly with us,” the source said.

However, that customer later pulled out the venture. Subsequent attempts to fill the gap failed, the source added.

Masten is one of four companies with similar NASA lunar lander contracts. The others, Astrobotic, Firefly, and Intuitive Machines, all have scheduled missions planned, all of which however have been delayed for a variety of reasons.

4 comments

Falcon 9 launches cargo Dragon to ISS

5:56 pm

Capitalism in space: SpaceX tonight successfully used its Falcon 9 rocket to launch a Dragon freighter to ISS, with docking expected on July 16 at 11:20 am (Eastern).

The first stage landed successfully on a drone ship in the Atlantic, completing its fifth flight. The cargo Dragon is flying its third flight to the station.

The leaders in the 2022 launch race:

30 SpaceX
22 China
9 Russia
5 Rocket Lab
4 ULA

The U.S. now leads China 43 to 22 in the national rankings, and the entire globe combined 43 to 38.

One comment

Webb infrared image of Jupiter & Europa

3:36 pm

Jupiter and Europa as seen by Webb
Click for full image.

During the commissioning phase after deployment, the James Webb Space Telescope took images of Jupiter and several asteroids in order test the telescope’s instruments. The photo to the right, cropped and reduced to post here, shows both Jupiter and its moon Europa to the left.

Fans of Jupiter will recognize some familiar features of our solar system’s enormous planet in these images seen through Webb’s infrared gaze. A view from the NIRCam instrument’s short-wavelength filter shows distinct bands that encircle the planet as well as the Great Red Spot, a storm big enough to swallow the Earth. The iconic spot appears white in this image because of the way Webb’s infrared image was processed.

…Clearly visible at left is Europa, a moon with a probable ocean below its thick icy crust, and the target of NASA’s forthcoming Europa Clipper mission. What’s more, Europa’s shadow can be seen to the left of the Great Red Spot. Other visible moons in these images include Thebe and Metis.

The false color differences indicated differences in heat but it is not explained whether brighter is colder or warmer in this photo.. As one of my readers below correctly notes, Europa’s shadow tells us that darker is cooler. This one image shows that the Red Spot and Jupiter’s equatorial regions and poles are generally warm.

13 comments

Comet K2: big and doing unexpected things

9:19 am

Link here. The article provides a nice overview of the observations so far of this very distant but very large comet making its suspected first close approach to the Sun this week, though still beyond the orbit of Mars and barely visible to amateurs.

K2 was first sighted in May 2017 at a much farther distance from the Sun than most comet discoveries. It had developed a coma much earlier than expected, which scientists now think came from from carbon monoxide.

“Carbon monoxide has been detected in other comets closer to the sun, although in much lower quantities than water. Carbon monoxide is very volatile and hard to freeze into a solid.” Jewitt and his colleagues theorized that as the comet slightly warmed while moving toward the planetary region of the solar system, the carbon monoxide ice near its surface turned into a gas that streamed into the vacuum of interplanetary space like constant wind. This wind stirred up dust particles from the comet’s surface, creating the round puffball-like coma.

But it took several failed attempts to measure the chemical composition of the comet to confirm the theory, Jewitt said. The team finally succeeded last year when the comet reached the orbit of Jupiter, and the scientists finally spotted carbon monoxide in the heart of the comet.

Comet K2 also did not develop a comet tail as expected. This appears to be because the particles in its coma are much larger than expected, something that at present is a complete puzzle.

Leave a comment

No more Ingenuity flights until August

9:08 am

Because it is now winter on Mars, with lots of seasonal dust in the atmosphere, the engineering team operating the helicopter Ingenuity have decided to suspend further flights until August.

Dust levels are expected to subside later in July, so the team has decided to give the helicopter’s batteries a break for a few weeks and build their daily state of charge back up. Weather permitting, Ingenuity is expected to be back in the air around the start of August.

This decision is not a surprise. When the team announced in May the plans for the helicopter’s most recent flight, completed in June, they suggested flights would pause for awhile thereafter. They have now made it official.

Leave a comment

Icy scarps in the high southern latitudes of Mars

1:25 pm

Icy scallops in the high southern latitudes of Mars
Click for full image.

Cool image time! The photo to the right, rotated, cropped, and reduced to post here, was taken on May 30, 2022 by the high resolution camera on Mars Reconnaissance Orbiter (MRO). It shows what the scientists label “Patching Mantling Unit,” located at about 57 degrees south latitude in a region where scientists have found good evidence of near surface ice. The top layer, or mantle, is likely patchy because it has a high content of water ice and is sublimating away. That almost all the cliffs are south-facing, which in the southern hemisphere gets the least direct sunlight, supports this supposition. For example, in the crater at the bottom of the image the ice would have disappeared first from the north-facing interior rim slopes, with the sublimation slowly working its way northward. Thus we have that butte extending out from the north rim.

The global map below not only indicates the location of these scallops with the green dot, it illustrates the overall icy nature of most of the Mars.
» Read more

Leave a comment

Ariane-6 mock-up installed at launchpad for tests

9:28 am

The European Space Agency yesterday announced that it has installed an Ariane-6 full scale mock-up at its launchpad in French Guiana in preparation for tank and launch procedure tests.

The Ariane 6 combined tests model is highly representative of the flight model. It consists of the core stage and the upper stage, which make up the central core, as well as three pylons shaped like the rocket’s solid boosters and a fully representative but inert mockup of the fourth booster.

The Ariane 6 combined tests model central core was precisely mated in the purpose-built launcher assembly building, where this task is carried out horizontally. Automated guidance vehicles then brought the assembled core to the launch and, working with the crane at the mobile gantry, raised it to its vertical position.

The date of the actual first launch has not been announced, though ESA has officially admitted that it will not occur this year as hoped.

Leave a comment

Roscosmos forbids its astronauts from using Europe’s robot arm

9:19 am

In response to the final decision this week by the European Space Agency to officially end its cooperation with Russia on its ExoMars mission, Roscosmos today forbid its astronauts from using Europe’s new robot arm that was recently installed on the Russian Nauka module of ISS.

Russia’s crew onboard the International Space Station (ISS) will stop using the European ERA manipulator arm in response to the European Space Agency’s (ESA) refusal from cooperation on the ExoMars project, CEO of Russia’s state space corporation Roscosmos Dmitry Rogozin said on Tuesday.

“In my turn, I instruct our ISS crew to stop using the European Robotic Arm (ERA). Let [ESA Director General Josef] Aschbacher along with his boss [EU foreign policy chief Josep] Borrell fly to space and do at least something useful in their entire lives,” he wrote on his Telegram channel.

The arm was designed to work on the Russian part of ISS, so it appears this decision by Rogozin is an example of someone cutting off his nose to spite his face. It essentially reduces Russia’s capabilities on the station.

As for ExoMars, it is unclear what will happen to the lander that Russia built to put Europe’s Franklin rover on Mars. Roscosmos has said it might proceed with its own mission to Mars, using that lander, but it has not made the full commitment to do so.

Leave a comment

ABL completes static fire test of first stage of its new RS1 rocket

9:06 am

Capitalism in space: The new smallsat rocket startup ABL has successfully completed a full static fire test of the first stage of its new RS1 rocket from its launchpad in Kodiak, Alaska.

Company executives said that they performed the static-fire test of the first stage of its RS1 rocket July 9 at the Pacific Spaceport Complex – Alaska on Kodiak Island, the site where the company plans to conduct its first launch.

“The operation verified our startup sequence and stage level engine performance,” Harry O’Hanley, chief executive of ABL, said in a statement to SpaceNews. “A testament to our team’s intense preparation, we completed the test on the first attempt.”

The static-fire test also verified the performance of the ground systems, including a portable launch stool that can be packed into a shipping container. That system, O’Hanley said, enables launching from a flat pad like at Kodiak.

The company is presently completing testing of the rocket’s upper stage, with its next task to mate the two and complete a full dress rehearsal countdown. Though no launch date has been set, the company has been targeting a launch before the end of this year.

Leave a comment

OneWeb agrees with SpaceX: Dish’s ground-based plans a frequency threat

9:01 am

Capitalism in space: In a filing with the FCC, OneWeb has come out in full agreement with its competitor SpaceX, stating that Dish’s proposal to use the 12 GHz wavelength would threaten its satellite communications.

In a letter to the Federal Communications Commission, OneWeb urged the regulator to reject a request from satellite broadcaster Dish Network and spectrum holder RS Access to run two-way mobile services in the band. If approved, “it would leave significant areas of the United States unusable by the otherwise ubiquitous NGSO [fixed satellite service] user terminals,” wrote Kimberly Baum, OneWeb’s vice president of spectrum engineering and strategy.

To connect user terminals, the SpaceX-owned Starlink and OneWeb megaconstellations use a satellite downlink band that extends from 10.7 GHz to 12.7 GHz. The analysis from OneWeb is the latest in a string of studies assessing how a high-power mobile network in the 12.2-12.7 GHz band would impact NGSO services.

Though the FCC has not yet made a final decision, it has already rejected Dish network’s request to block SpaceX’s use with Starlink of these wavelengths.

Leave a comment

Rocket Lab & ESA complete launches

8:40 am

Very early today from New Zealand Rocket Lab successfully launched the first of two quickly scheduled launches for the National Reconnaissance Office, designed to demonstrate its ability to achieve fast scheduling and rapid turnaround. The second launch is targeting July 22, 2022, only ten days later.

Also today the European Space Agency (ESA) successfully completed the first launch of its new upgraded Vega-C rocket, putting its prime payload (a passive test satellite) plus six cubesats into orbit. Though ESA says it will eventually hand over operations to Arianespace, its commercial arm, the rocket itself is mostly built by the Italian company Avio. Also, the rocket’s solid rocket first stage will be used as an optional side booster on the Ariane-6 rocket ArianeGroup is building for ESA.

Though ESA launched Vega-C, as it will eventually be managed by Arianespace I include it in that company’s total, which is now three launches for 2022.

The leaders in the 2022 launch race:

29 SpaceX
22 China
9 Russia
5 Rocket Lab
4 ULA

American private enterprise. now leads China 42 to 22 in the national rankings, and the entire globe 42 to 38.

Leave a comment

China launches another communications satellite for its space program

1:01 pm

Using its Long March 3B rocket, China today launched the third satellite in the second generation of communication satellites used by its space program.

All told China now has seven satellites in this constellation, giving it a great deal of redundancy.

The leaders in the 2022 launch race:

29 SpaceX
22 China
9 Russia
4 Rocket Lab
4 ULA

American private enterprise still leads China 41 to 22 in the national rankings, and the entire world 41 to 37.

Leave a comment
1 … 137 138 139 140 141 … 507