Japan may try to put Akatsuki into orbit around Venus five years from now, rather than six.
NASA engineers think they might have found the root cause of the cracks that have been appearing on the shuttle external tank. The cracks appear on structural units called stringers. Key quote:
“Some material used for the stringers was found to be ‘mottled,’ with a different surface appearance than the standard material. Testing revealed this mottled material had lower fracture toughness than the nominal material and exhibited unstable crack growth. All of the cracks found during tanking as well as cracks fixed during manufacturing were located on stringers made with this mottled material.”
NASA engineers are considering giving Discovery’s external tank the equivalent of a girdle in order to keep it from developing more cracks during launch. Key quote:
If that decision is made, it is unlikely NASA could complete the work, repair the tank’s foam insulation and get Discovery back out to the launch pad in time to support a launch attempt during the next available window, which opens Feb. 3 and closes Feb. 10. Work to beef up all 108 stringers at the top of the intertank almost certainly would delay Discovery’s launch on a space station resupply mission to the next available window, which opens Feb. 27 and closes in early March.
The repairs to the cracks on Discovery’s external tank continue, with the hope for a February 3 launch.
China today unveiled the world’s longest sea bridge, stretching 26.4 miles and three miles longer than the previous record holder.
Snapped connectors led to the failure last week of India’s GSLV rocket.
Updated and bumped: The inspections reveal four additional cracks on Discovery’s external tank.
NASA engineers have finished a series of x-ray scans of Discovery’s external tank.
“Zombie” satellite comes back to life.
Russian space officials are fired over rocket failure.
Why I use Linux: Hilarious Windows error messages. This is typical:
Windows has detected that you have moved your mouse. Please restart your computer.
Want to become an astronaut? The private company Astronauts4Hire is taking applications.
Bad news for India’s space program: It’s geosynchronous rocket, GSLV, failed today less than two minutes after launch. Key quote:
[The Indian Space Research Organization (ISRO)] has had a troubled past with GSLV, with only two of the seven launches so far claiming total success. Though ISRO claims that four launches had been successful, independent observers call at least two of them either failure or partial success. When it comes to launching its workhorse PSLV, ISRO has had 15 consecutive successes.
Flying on empty to a comet.
The new colonial movement: For the first time China has matched the U.S. in space launches. Note that though the above article implies it, the U.S. has quite often not been the yearly leader in launches, as Russia has often topped the list. Nonetheless, with China now becoming more competitive the future of space travel can only get bettter.
The hubbub about this week’s lunar solstice eclipse was, from my perspective, mostly manufactured press blather. For those who had never seen a lunar eclipse, it was a spectacular experience, but there really was nothing scientifically or technically unique about the fact that it happened to occur on the solstice.
However, below is an eclipse that is definitely unique both technically and scientifically. Scientists using the Mars rover Opportunity have filmed an eclipse on Mars, showing the Martian moon Phobos crossing in front of the Sun. Consider the engineering accomplishment: not only did they need to be able to calculate exactly when this would happen at a very particular spot on the Martian surface, they had to have a camera there able to take the movie. And they had to operate it from Earth!
The glide tests of SpaceShipTwo have exceeded expectations, and are ahead of schedule.
Another scheme to stop a dangerous asteroid: Use a flotilla of solar sails to divert Apophis.
How close to the Sun could we get?
The first flight to test the taste of beer in microgravity has been delayed until February due to poor weather.
The electricity produced from a proposed wind plant will be so expensive the company can’t find customers. They do have one customer, however, but one wonders why:
In its 15-year deal, National Grid agreed to pay 18.7 cents per kilowatt hour for Cape Wind power beginning in 2013, with a 3.5 percent annual increase. The starting price is twice what National Grid pays today for power from fossil fuels, and regulators say the contract will add about 1.7 percent to its residential customers’ bills.
Read the whole article. It explains a lot about the failures of renewable energy, and how the efforts of the government and environmentalists to force it on us is misguided and downright foolish.
A 10-man team of explorers and scientists today completed the first there-and-back crossing of the continent of Antarctica using wheeled vehicles. From the expedition blog:
We quickly took ourselves to the mess tent for some hot coffee and something which we had been craving for a while – Coca Cola. The feeling among the team was satisfaction and elation at what we had achieved and relief that the belt drive had held out! The first Expedition ever to travel coast to coast and back again, with the privilege of visiting the South Pole twice. We joked in the mess tent before deciding that we were not going to sleep and headed over to the Mechanic Area and back to the vehicles.
A valve leak in the Russian-built upper stage of India’s GSLV rocket has caused India to delay the launch.
What does this tell us about Boeing’s manned spaceflight efforts? The problems continue to pile up with Boeing’s new airplane, the 787 Dreamliner.
Private meets government: Rather than build it themselves, NASA’s Dryden Flight Research Center merely provided support for a drop test of a 15 percent scale model of a reusable spacecraft being designed and developed by the new-space company Sierra Nevada.
The initial results from the tank test performed today on the shuttle external tank are as yet inconclusive.
The Soyuz capsule, carrying the next crew to the International Space Station, has docked safely with the station.
Engineers now think that a cracked nozzle caused the Japanese probe Akatsuki to miss Venus.
NASA will be conducting tank tests today on the Discovery’s external tank in an effort to find the cause of the recently discovered cracks.
This is more a kerfuffle in the press than a real emergency: for about three hours today Russian mission control had problems communicating with either ISS or the Soyuz spacecraft that is on its way to it. Neither spacecraft was in any danger during the down time.
