Tag: engineering

Astronaut Sunita Williams completed first simulated triathlon in space this past weekend on ISS.

9:10 am

Astronaut Sunita Williams completed the first simulated triathlon in space this past weekend on ISS.

After “swimming” half a mile (0.8 km), biking 18 miles (29 km), and running 4 miles (6.4 km), Williams finished with a time of one hour, 48 minutes and 33 seconds, she reported. The space station has its own treadmill and stationary bike, which use harnesses and straps in place of gravity to keep astronauts from floating away. To simulate the swimming portion of the race, Williams used what’s called the Advanced Resistive Exercise Device (ARED) to do weightlifting and resistance exercises that approximate swimming in microgravity.

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Three astronauts have safely returned to Earth from ISS.

9:23 am

Three astronauts have safely returned to Earth from ISS.

More important, the Russians have now delayed the next Soyuz manned launch to ISS for a week due to “some malfunctions [that] have appeared in one of the devices of the decent module.”

They also say the delay is to avoid a flight conflict with the next Dragon mission on October 15. This is interesting in that the last word we had from NASA was that the Dragon launch could occur as early as October 5.

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Germany announced yesterday that it has approved funding for the design of an in-orbit test of a robot satellite servicing mission.

10:04 am

Germany announced yesterday that it has approved funding for the design of an in-orbit test of a robot satellite servicing mission.

The DEOS project will for the first time demonstrate technologies for the controlled in-orbit disposal of a defective satellite. In addition, DEOS will practice how to complete maintenance tasks – refueling in particular – that extend the service life of satellites. DEOS consists of two satellites, a ‘client’ and a ‘servicer’. The client acts as the satellite requiring maintenance or disposal. The servicer carries out the necessary work on the client. The two satellites will be launched together and brought into orbit at a height of 550 kilometers. According to current planning, DEOS will be ready for launch in 2018.

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At the AIAA meeting this week in Pasadena, NASA officials admitted that the Space Launch System (SLS) will likely cost half a billion dollars per launch

7:43 pm

It’s only money! At the AIAA meeting this week in Pasadena, NASA officials admitted that the Space Launch System (SLS) will likely cost half a billion dollars per launch.

That means that after only two flights this rocket will have cost about the same as the entire manned commercial program, from which three different space companies are building three different methods for getting humans into space. After three missions it will cost more, and after four missions it will have cost double. And this is assuming that the half billion dollar “target” number ends up correct.

We can’t afford this. We never could, which is why the Saturn 5 rocket was abandoned, and why the shuttle never fulfilled its stated goal of lowering the cost of access to space and after thirty years was abandoned as well. Instead, we have got to find a cheaper way to do this, and to my mind, competition and private enterprise is the only hope.

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A dispute over launch pricing between ArianeSpace, the launch company, and Globalstar, the satellite company.

8:37 am

A dispute over launch pricing between Arianespace, the launch company, and Globalstar, the satellite company.

The article only quotes an executive from Arianespace, who suggests Globalstar has been having troubles making payments. I wonder instead if maybe Globalstar has been balking at Arianespace’s prices (knowing there are other companies that can do it cheaper) and has been holding out for a price cut.

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An experimental vertical take-off and landing rocket crashed during its most recent test on Tuesday.

10:49 pm

An experimental vertical take-off and landing rocket crashed during its most recent test flight on Tuesday.

The Xaero had already flown more than 100 test flights, so this crash does not make it a failure. Like all engineering tests, the flight will only be a failure if they cannot figure out what went wrong.

This update says they have located the problem, the failure of a valve.

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The Russian space agency has ordered the recall and inspection of every Briz-M upper stage used in their Proton rocket.

9:18 am

The Russian space agency has ordered the recall and inspection of every Briz-M upper stage used in their Proton rocket.

This is part of the on-going shake-up of the Russian rocket industry following the recent failures of the upper stage during several commercial launches. One interesting and positive note is that they expect to resume launches in October, which is extremely fast.

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India’s space agency celebrated its 100th launch today.

10:12 am

The competition heats up: India’s space agency celebrated its 100th launch today.

It is unclear whether the numbers include their failed launches. Regardless, India has a vibrant space program, modeled somewhat after the Russian system, a government space agency focused on gaining commercial market share. Whether that model can successfully compete in the commercial world remains unknown. Russia has had success, but only during a period when they were faced with few competitors. Now that the competition is heating up it is unclear whether Russia’s model will be flexible enough to compete.

What is clear about India, however, is that they are passionate about space exploration. Historically, even the Russian government model has worked when the country using it was the new kid on the block.

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Sign the LunarCOTS petition.

2:02 pm

Do you think the commercial space program led by SpaceX is the fastest and cheapest way for the U.S. to get humans back into low Earth orbit? Then why not do it for missions beyond Earth orbit?

The LunarCOTS petition is a campaign to have NASA subsidize private companies to design and build the United States’ future interplanetary missions rather than have NASA do it in big government programs like SLS. Makes sense to me, and so I signed the petition immediately.

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The Mars Reconnaissance Orbiter team today released a set of images showing Curiosity’s recent travel on Mars, as well as some fascinating closeups of the spacecraft’s heat shield, parachute, and descent stage.

4:47 pm

Curiosity's first steps

The Mars Reconnaissance Orbiter team today released a set of images showing Curiosity’s first steps on Mars, as well as some fascinating closeups of the spacecraft’s heat shield, parachute, and descent stage. The image on the left shows the tracks of the rover during its first few days of travel.

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