Tag: spaceflight

Interview with Elon Musk

2:31 pm

Spacevidcast has posted on YouTube as well as on their own webpage the first 10 minutes of a 20 minute interview with Elon Musk of SpaceX. You can see the full 20 miutes if you sign up for their Epic service.

For me, the interesting part of the interview is when he discusses the recent story about SpaceX’s plans to build a heavy-lift rocket, dubbed Falcon X. He explained that the proposal was not actually part of the company’s official plans. but the brainstorming ideas of one of the company’s engineers at an engineering conference. He also made it clear that he did not reject the idea. He likes giving his engineers the freedom to talk about such things publicly, even if the company is not yet ready to pursue them.

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Repair strategy for Wednesday spacewalk

10:40 pm

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.

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ISS tour, part 1

8:01 pm

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.

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First spacewalk to replace pump module

2:38 pm

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.

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Burt Rutan on future of space

1:19 am

At an airshow on Thursday, July 29, in Oskosh, Wisconsin, Burt Rutan, designer of SpaceShipOne, made some interesting remarks about the past and future of private space flight. Key quote:

Rutan said NASA should give 10 to 15 percent of its budget to new space companies like Elon Musk’s SpaceX without regulating how to spend the money. “That would allow them to not (have to) beg for commercial investment, while still working in an entrepreneurial mode.”

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Poor leadership by Obama on NASA

12:33 am

Glenn Reynolds of Instapundit today said the following (in recognizing Jeff Foust’s op-ed for Technology Review):

CONGRESS BLOWS IT: Commercial Spaceflight, We Have A Problem. Congress will always choose short-term pork over long-term development unless there’s strong Presidential leadership. But while the Obama space policy is good, the White House hasn’t provided the kind of legislative push it takes to make it work. Without strong leadership, a good policy will always lose out to pork.

Didn’t someone say this already? In fact, didn’t that someone say this more than once?

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Single Rope Techinque — on the Moon

2:33 pm

James Fincannon of NASA took the two images of the Marius Hills lunar pit taken at different times by Lunar Reconnaissance Orbiter (which I posted here) and did an overlay so that the shadow produced by pit’s rim could be easily compared with the rim itself (see below). He then did some calculations based on the sun’s angle of light shining into the cave and came up with the following calculations:

I estimate it is 60 meters from rim to bottom. The floor is flat below the surface. The rocks on the flat surface below ground are in stark relief (hard shadows) compared to above ground due to the sun coming only at one angle while above ground the albedo/reflections makes for soft shadows at this high sun angle (65 deg elevation). I cannot tell if the black portion of the combo image is a slope or more flat floor. Need a different high sun angle or azimuth to fill that in. Still I like the general pattern of the rim matching the shadow on the floor, although the image I found originally has that edge of the cave rim in shadow for a large extent.

overlay of Marius Hill cave

A 60 meter drop is about 200 feet deep. This result is reasonably close to the depth estimated by Japanese scientists, 88 meters or 288 feet, based on images of the same lunar pit taken by their Kaguya probe.

Knowing the approximate depth of the entrance pit raises the much more important question: How will future lunar explorers to get to the bottom of this pit? It is ironic » Read more

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ISS and Chinese satellite debris

1:34 pm

Russian mission control has indicated that the debris left over from destruction of a Chinese satellite in 2007 poses a “danger” to the International Space Station. Key quote from a Russian official:

“If the calculations show that the debris is approaching the station at an unacceptably close range, the six astronauts will receive the order to take shelter in the two Russian Soyuz spacecraft which are docked with the ISS.”

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Space war update

9:49 am

This Orlando Sentinel analysis of the various Congressional NASA budget proposals working their way through the House and Senate right now concludes, as I have been saying for months, that the future for NASA is not good. Key quote:

The plan orders NASA to build a heavy-lift rocket and capsule capable of reaching the International Space Station by 2016. But it budgets less money for the new spacecraft — about $11 billion during three years, with $3 billion next year — than what the troubled Constellation program would have received. That — plus the short deadline — has set off alarms.

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Senate moves towards House NASA plan

10:53 pm

In a blunt rejection of the Obama proposals for NASA, the Senate Appropriations Commerce, Justice, and Science Subcommittee today reworked the NASA plan — handed to them last week by the committee that authorizes NASA’s budget — so that it more closely matched the House version. These changes cut in half the money for private commercial space while adding $3 billion to continue the development of the Orion capsule and the heavy lift version of the Ares rocket.

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The space war heats up

9:58 am

It appears the space war is heating up again. This analysis of the NASA authorization legislation issued by the House yesterday notes that it has serious differences with the Senate bill. The article notes that the House bill does not fund an additional shuttle mission while insisting that the government continue the construction of some variation of the Orion capsule and Ares rockets. See also this article from the Orlando Sentinel.

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