Dragon capsule drop test
Take a look at these pictures of the August 12 drop test of SpaceX’s Dragon capsule.
Take a look at these pictures of the August 12 drop test of SpaceX’s Dragon capsule.
Tag: engineering
Dragon capsule drop test
China’s first unmanned space module assembled
The Chinese have completed assembly of Tiangong 1 (Heavenly Palace), their first space station module due to be launched in 2011.
The Chinese have completed assembly of Tiangong 1 (Heavenly Palace), their first space station module due to be launched in 2011.
Spacewalk report
This space.com report by Tariq Malik gives a good overview of today’s successful spacewalk on ISS.
This space.com report by Tariq Malik gives a good overview of today’s successful spacewalk on ISS.
Why SpaceX is winning the race
An unidentified administrator of the University of Michigan space engineering program has some interesting thoughts on why SpaceX has been so successful. Key quote:
I recently performed an analysis of the very best students in my space engineering programs over the past decade, based on their scholarly, leadership and entrepreneurial performance at Michigan. To my amazement, I found that of my top 10 students, five work at SpaceX. No other company or lab has attracted more than two of these top students.
I also noticed that SpaceX recruited only two of them directly from the university. The others were drawn to the company after some years of experience elsewhere—joining SpaceX despite lower salaries and longer work hours. Why do they leave successful jobs in big companies to join a risky space startup? A former student told me, “This is a place where I am the limiting factor, not my work environment.” At SpaceX, he considers himself to be in an entrepreneurial environment in which great young people collaborate to do amazing things. He never felt like this in his previous job with an aerospace company.
An unidentified administrator of the University of Michigan space engineering program has some interesting thoughts on why SpaceX has been so successful. Key quote:
I recently performed an analysis of the very best students in my space engineering programs over the past decade, based on their scholarly, leadership and entrepreneurial performance at Michigan. To my amazement, I found that of my top 10 students, five work at SpaceX. No other company or lab has attracted more than two of these top students.
I also noticed that SpaceX recruited only two of them directly from the university. The others were drawn to the company after some years of experience elsewhere—joining SpaceX despite lower salaries and longer work hours. Why do they leave successful jobs in big companies to join a risky space startup? A former student told me, “This is a place where I am the limiting factor, not my work environment.” At SpaceX, he considers himself to be in an entrepreneurial environment in which great young people collaborate to do amazing things. He never felt like this in his previous job with an aerospace company.
Spacewalk update
The spacewalk on ISS is not quite finished, but the astronauts are wrapping up after successfully installing the replacement pump to the cooling system. Ground controllers have tested the system and it appears to be working.
The spacewalk on ISS is not quite finished, but the astronauts are wrapping up after successfully installing the replacement pump to the cooling system. Ground controllers have tested the system and it appears to be working.
The plans for the next spacewalks on ISS are announced
NASA managers have delayed by one day the next spacewalk to repair ISS’s cooling system. Now set for August 16, this spacewalk will install the new pump. The date of a fourth spacewalk to finish up the work is as yet unscheduled.
NASA managers have delayed by one day the next spacewalk to repair ISS’s cooling system. Now set for August 16, this spacewalk will install the new pump. The date of a fourth spacewalk to finish up the work is as yet unscheduled.
Japanese planning upgrades to HTV
The Japanese are considering upgrades to their unmanned HTV freighter that carries cargo to ISS. The upgrades would allow HTV to return large cargo to Earth, as well as possibly become a manned vehicle.
The Japanese are considering upgrades to their unmanned HTV freighter that carries cargo to ISS. The upgrades would allow HTV to return large cargo to Earth, as well as possibly become a manned vehicle.
Tour of ISS, part 4
An evening pause: Mike Finke’s tour of ISS continues in the Progress freighter, moves through the Zarya functional cargo module into the Zvezda service module at the aft end of the station, showing us a Russian crew cabin and the station’s main bathroom facilities.
ISS tour continues, part 3
An evening pause: Astronaut Mike Finke’s tour of ISS continues, taking us through the Unity module and into the Russian part of the station, showing us the inside of a Soyuz lifeboat, the Zarya functional cargo module, the Piers docking module/airlock, and ending looking into the hatch of a Progress freighter.
Fourth spacewalk anticipated for coolant repairs
With the success of yesterday’s spacewalk, NASA engineers have revamped their remaining spacewalk plans for replacing that failed pump. The third spacewalk has been moved from Sunday to Monday to give everyone more time to prepare, and they are now planning a fourth spacewalk after that to finish things up.
With the success of yesterday’s spacewalk, NASA engineers have revamped their remaining spacewalk plans for replacing that failed pump. The third spacewalk has been moved from Sunday to Monday to give everyone more time to prepare, and they are now planning a fourth spacewalk after that to finish things up.
Spacewalk a complete success, old pump removed
Today’s spacewalk on ISS was a complete success. The astronauts successfully removed the failed coolant pump and made preparations to install the replacement pump on their next spacewalk.
Today’s spacewalk on ISS was a complete success. The astronauts successfully removed the failed coolant pump and made preparations to install the replacement pump on their next spacewalk.
NASA narrows asteroids to visit to three
NASA officials have reviewed the list of Near Earth Objects and found only three that meet all the constraints for a manned mission. Key quote:
Out of the 44 reachable asteroids, 27 were too small, and only 15 have orbits that allow for exploration between 2020 and 2050 — the timeframe NASA wants to pursue for NEO missions. The 180-day mission constraint further cuts the list to three.
It must also be noted that none of these asteroids are reachable without a heavy-lift rocket like the Ares V.
NASA officials have reviewed the list of Near Earth Objects and found only three that meet all the constraints for a manned mission. Key quote:
Out of the 44 reachable asteroids, 27 were too small, and only 15 have orbits that allow for exploration between 2020 and 2050 — the timeframe NASA wants to pursue for NEO missions. The 180-day mission constraint further cuts the list to three.
It must also be noted that none of these asteroids are reachable without a heavy-lift rocket like the Ares V.
More details about tomorrow’s planned spacewalk
Here’s another detailed look at tomorrow’s planned spacewalk, and what NASA engineers are doing on the ground and what the astronauts will do in space to eliminate the ammonia leak.
Here’s another detailed look at tomorrow’s planned spacewalk, and what NASA engineers are doing on the ground and what the astronauts will do in space to eliminate the ammonia leak.
SpaceX readies Dragon for first flight
SpaceX is readying its Dragon capsule for its first test flight, sometime this fall.
SpaceX is readying its Dragon capsule for its first test flight, sometime this fall.
ISS tour, part 2
An evening pause: Mike Finke’s tour of ISS continues, showing us the Columbus module, a crew cabin, the Destiny module, and into the Harmony module.
Repair strategy for Wednesday spacewalk
NASA engineers are working out a strategy for the next spacewalk, now tentatively scheduled of Wednesday, to continue repair efforts on the International Space Station. The new plans call for the astronauts to close several valves on the leaking coolant line while ground controllers lower pressure on the line, then drain the excess ammonia from it. This will hopefully allow the astronauts to disconnect the line from the pump without spewing ammonia all over the place, and then proceed with the removal of the failed pump.
NASA engineers are working out a strategy for the next spacewalk, now tentatively scheduled of Wednesday, to continue repair efforts on the International Space Station. The new plans call for the astronauts to close several valves on the leaking coolant line while ground controllers lower pressure on the line, then drain the excess ammonia from it. This will hopefully allow the astronauts to disconnect the line from the pump without spewing ammonia all over the place, and then proceed with the removal of the failed pump.
Spacewalk repair delaying robot repair
The efforts to fix the cooling system on ISS has not only limited use of the humans inside the station. It has delayed the maintenance work of the Canadian-built robot Dextre on the outside of the station.
The efforts to fix the cooling system on ISS has not only limited use of the humans inside the station. It has delayed the maintenance work of the Canadian-built robot Dextre on the outside of the station.
Details on the spacewalk yesterday
William Harwood of CBS News and Spaceflight Now provides a very detailed and clearly written description of the problems experienced during Saturday’s spacewalk, as well as the options faced by NASA to overcome them.
William Harwood of CBS News and Spaceflight Now provides a very detailed and clearly written description of the problems experienced during Saturday’s spacewalk, as well as the options faced by NASA to overcome them.
ISS tour, part 1
An evening pause: We talk a lot about the International Space Station. Why not take a tour? In this January 2009 video, part 1 of 4, astronaut Mike Finke starts us out at the docking port used by the shuttle and takes us through the Harmony and Kibo modules. Along the way he gives a great view out the port side of the station.
You can see the remaining parts of Mike’s tour by clicking through, or you can wait until I post them over the next week.
August 8 WhiteKnightTwo test flight
Scaled Composites successfully completed the 34th test flight of WhiteKnightTwo today.
Scaled Composites successfully completed the 34th test flight of WhiteKnightTwo today.
3rd spacewalk planned to finish repairs
NASA said late yesterday that a third spacewalk will be needed to finish the replacement of the failed pump module in the station’s cooling system.
NASA said late yesterday that a third spacewalk will be needed to finish the replacement of the failed pump module in the station’s cooling system.
Mapping daylight at the Moon’s South Pole
Using data from the Japanese lunar orbiter Kaguya, scientists have identified several locations near the Moon’s south pole that are in daylight from 86 to 94 percent of the time. Key quote from abstract:
The place receiving the most illumination (86% of the year) is located close to the rim of Shackleton crater at 88.74°S 124.5°E. However two other areas, less than 10 km apart from each other, are collectively lit for 94% of the year. We found that sites exist near the south pole that are continuously lit for several months during summer. We were also able to map the locations and durations of eclipse periods for these areas. Finally we analyzed the seasonal variations in lighting conditions, from summer to winter, for key areas near the south pole. We conclude that areas exist near the south pole that have illumination conditions that make them ideal candidates as future outpost sites. [emphasis mine]
Below is a composite close-up image of the rim of Shackleten crator that I assembled using this Lunar Reconnaissance image. The key quote from the full caption :
The full [Narrow Angle Camera] mosaic reveals a shelf on the southeast flank of the crater that is more than two kilometers across and perfectly suitable for a future landing. The extreme Sun angle gives the surface an exaggerated rough appearance, but if you look closely at this scale any area that is between the small craters might make a good landing site.
First spacewalk to replace pump module
The first spacewalk to replace the failed pump module on ISS is finished, and it did not go as well as hoped. The astronauts had problems removing one of four cooling system ammonia lines to the old pump. They eventually succeeded, actually using a hammer to lightly tap the quick-disconnect latch free. They then had to seal an ammonia leak coming from the problematic line. These issues caused them to run out of time, preventing them from removing the old pump and installing the new one. It is expected they will pick up where they left off on the next spacewalk, presently scheduled for Wednesday.
The first spacewalk to replace the failed pump module on ISS is finished, and it did not go as well as hoped. The astronauts had problems removing one of four cooling system ammonia lines to the old pump. They eventually succeeded, actually using a hammer to lightly tap the quick-disconnect latch free. They then had to seal an ammonia leak coming from the problematic line. These issues caused them to run out of time, preventing them from removing the old pump and installing the new one. It is expected they will pick up where they left off on the next spacewalk, presently scheduled for Wednesday.
Boeing cutting metal on its new capsule
Boeing is cutting metal on own privately funded new space capsule, planned for completion in 2015. Key quote:
“We’re at a point in the development of human spaceflight where there’s a market emerging beyond the ISS, beyond NASA,” John Elbon, Boeing’s vice president for commercial space programs, said in a briefing Thursday. “And that piece of this is really exciting as well.”
Boeing is cutting metal on own privately funded new space capsule, planned for completion in 2015. Key quote:
“We’re at a point in the development of human spaceflight where there’s a market emerging beyond the ISS, beyond NASA,” John Elbon, Boeing’s vice president for commercial space programs, said in a briefing Thursday. “And that piece of this is really exciting as well.”
Second test of Ares solid rocket scheduled
Alliant Techsystems (ATK) has scheduled the second test of the five segment solid rocket motor, planned for use on the Ares I rocket, for August 31. Fun quote:
When fired, the motor will produce a maximum thrust 3.6 million pounds, or 22 million horsepower [half the power of the first stage of the Saturn V rocket]. The cases [segments] have all previously flown on the space shuttle, collectively launching on 57 missions.
Alliant Techsystems (ATK) has scheduled the second test of the five segment solid rocket motor, planned for use on the Ares I rocket, for August 31. Fun quote:
When fired, the motor will produce a maximum thrust 3.6 million pounds, or 22 million horsepower [half the power of the first stage of the Saturn V rocket]. The cases [segments] have all previously flown on the space shuttle, collectively launching on 57 missions.
A ground-based telescope matches the Hubble Space Telescope-NOT
Correction.Regular reader James Fincannon emailed me to say that he thinks the image below is an artist’s impression. He is correct. I should have looked more closely at the press release. In reading the actual research paper [pdf] on the results it seems that the VLT did some very sophisticated spectroscopy, thereby measuring the uneven distribution of the velocity and density of the gas around the star. The image below was then created, based largely on Hubble images combined with the new data. In other words, this ground-based telescope did not match the abilities of a space-based telescope in any way. Had the Hubble images not existed the astronomers would have struggled to interpret their spectroscopic data.
Some important astronomy news: The European Southern Observatory’s Very Large Telescope (VLT) has released this spectacular image of supernova 1987a, the first and so far only supernova visible to the naked eye since the invention of the telescope.
This image is important for two reasons. First, The data shows that the supernova explosion was not symmetrical, with more material being thrown outward in some directions than in others. This fact confirms what astronomers in recent years have increasingly come to believe: Supernovae explosions are not simple spherical bursts, but chaotic events ripping stars apart in a lopsided manner.
Second, this image demonstrates that ground-based telescopes are becoming amazingly good at doing what the Hubble Space Telescope has done routinely for the past two decades. Five years ago, no telescope on the ground could have resolved the inner ring of supernova 1987a. Only Hubble in space had that capability. Now, VLT can do it, almost as well as Hubble. Though a space-based telescope can still beat any ground-based telescope, it is great news that the technology for ground-based telescopes has improved so much, especially since there presently are no plans to replace Hubble.
Newest ice core in Greenland hits bedrock
After two summers of drilling the newest Greenland ice core finally hit bedrock on July 27 at a depth of more than 1.5 miles. Hopefully the ice layers from this deep core will provide additional information about the Earth’s climate going back as far as 130,000 years.
After two summers of drilling the newest Greenland ice core finally hit bedrock on July 27 at a depth of more than 1.5 miles. Hopefully the ice layers from this deep core will provide additional information about the Earth’s climate going back as far as 130,000 years.
WhiteKnightTwo test flight on Twitter
WhiteKnightTwo was in the air today, doing another test flight, this time without SpaceShipTwo attached.
WhiteKnightTwo was in the air today, doing another test flight, this time without SpaceShipTwo attached.
Repair spacewalk scheduled
The first spacewalk to replace the pump module on ISS and thus fix on of the station’s two cooling system is now scheduled for Friday at 6:55 (EDT).
The first spacewalk to replace the pump module on ISS and thus fix on of the station’s two cooling system is now scheduled for Friday at 6:55 (EDT).
ISS cooling system failure
More on that failure of the cooling system on ISS. It appears that NASA is gearing up to send two astronauts out for up to two spacewalks to try to fix the problem.
More on that failure of the cooling system on ISS. It appears that NASA is gearing up to send two astronauts out for up to two spacewalks to try to fix the problem.