At the same time announcing that a third powered test flight of SpaceShipTwo will occur in about a month, Virgin Galactic has now admitted that commercial flights will not occur in 2013.
The competition heats up: India successfully launched its first probe to Mars today.
The mission, also known in India as Mangalyaan (which means “Mars-craft”), has at the moment only reached Earth orbit. To get to Mars, it must still complete an additional engine firing on November 30.
India has begun the countdown for the November 5 launch of its first Mars orbiter.
Just today, spacetoday.com lists fourteen different stories in the Indian press about this mission, all enthusiastic, thus indicating the excitement in that country over space exploration and this mission in particular. Nor is this event unusual. I’ve noted before how space happy India is. They not only want to catch up and pass their neighbor China, they want to catch up with the United States and Russia. Should be fun to watch.
In preparation for the arrival of a new crew, the astronauts on ISS took a short ride yesterday, moving their Soyuz capsule to a different docking port.
The FAA has lifted its ban on the use of cell phones during take-off and landings in airplanes.
The ban on mobile devices has been in effect since the early 1990s, when cellphones began to crop up, and the FAA and airlines summarily freaked the hell out for no good reason. Despite no direct evidence that the use of mobile phones or other electronic devices would interfere with the plane’s systems, the ban continued — even after the FAA hired an outside safety agency to find if anything could go wrong. They didn’t. But the FAA and airlines decided to continue the policy. Until today.
The requirement to stow laptops during takeoffs and landings remains, however, as the FAA fears these larger objects could too easily become dangerous projectiles should something go wrong.
In preparation for November 5 launch of India’s first mission to Mars, ISRO successfully performed a full dress rehearsal countdown yesterday.
We all cross our fingers and wish India well on this mission.
The article also had this additional tidbit that reveals a great deal about world culture:
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Bras in space: How a bra company made the spacesuits the astronauts wore on the Moon.
Fascinating interview, though I find it humorous how it is considered absurd and unlikely for a private company that makes bras to make these spacesuits. In truth, when the Apollo missions happened, Americans had no doubt that ordinary private businesses were the best places to go to get something novel and creative done.
The complete failure of the fuel tank appears to be the cause of the massive leak that caused the launch postponement of India’s first home-made geosynchronous powered rocket in August.
Mr. Radhakrishnan [head of India’s space agency] said while the expert committee had attributed the fuel leak to stress corrosion cracking of the tank filled with propellants, exactly why this happened was “a research problem” that remains to be investigated. The next GSLV mission will switch to a better aluminium alloy material for its propellant tanks.
Up to now the reports have been somewhat vague about the cause of what was clearly an extensive leak. This story tells us that the tank essentially failed. As they filled it with propellants, cracks apparently showed up everywhere, with fuel spewing out in all directions. As far as I can remember, I don’t think there has ever been a rocket tank failure quite this spectacular.
This suggests there were fundamental design flaws in the tank or very serious quality control problems in its manufacture. With the next launch attempt scheduled for December 15, I hope India has identified the source of this incredibly basic problem and taken action to prevent it from happening again.
Update: Reader Patrick Ritchie found this older article which suggests the failed tank was an old tank of a design that was “prone for delayed cracks”. The error here then was in using this substandard old equipment rather than a newer tank.
The uncertainty of science: A new dark matter detector has failed to detect any dark matter after its first three months of operation.
Buried about a mile underground in a repurposed South Dakota gold mine, the LUX experiment searches for signs of dark matter particles colliding with the atoms in a vat of liquid xenon. During its first three months of operation, the detector found no such signals whatsoever. “We looked hard for these dark matter particles and we didn’t see anything,” says physicist Rick Gaitskell of Brown University, co-spokesperson for the LUX experiment. The results, presented at a seminar today and submitted to Physical Review Letters for publication, rule out a number of possible masses and characteristics for the particles that make up dark matter. The null result also conflicts with earlier experiments that had reported possible signals of dark matter.
This experiment has not proven that dark matter does not exist. It merely has narrowed significantly the kinds of particles that dark matter could be made of. That the results also contradict evidence from other detectors, however, leaves this specific area of science particularly uncertain.
Sierra Nevada reveals that its Dream Chaser engineering test vehicle survived its bad landing this weekend in reasonably good shape.
After lining up on the runway, the spacecraft’s nose landing skid and right main landing gear deployed normally about 200 feet off the ground. But the left main gear hung up for some reason. Sirangelo said the software issued the proper commands, leading engineers to suspect a mechanical problem of some sort.
The landing gear in the test vehicle were taken from an F-5 training jet and will not be used on operational versions of the Dream Chaser.
In any case, the Dream Chaser’s flight software responded to the unbalanced load at touchdown, keeping the spacecraft’s left wing off the ground as long as possible. But it eventually came down and the craft skidded off the runway in a cloud of dust. [emphasis mine]
They should release the video. If the vehicle’s software was able to keep the vehicle stable, even as it was speeding down a runway short one wheel, this would impress people. Not releasing video of this only feeds the doubts people have.
Want to fly over the surface of Mars? ESA scientists have produced a movie using the data produced by their Mars Express orbiter in the past decade.
Video below the fold. More details here.
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Sierra Nevada today released a video of the test flight this past weekend of its Dream Chaser engineering test vehicle.
Don’t get too excited. They very cleverly have edited the tape so that we do not see what happened after touchdown. You can see how the left landing gear does not completely deploy, but then they cut away. Nonetheless, the video is posted below the fold.
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