Tag: engineering

A Russian Proton rocket went out of control and crashed mere seconds after launch today at Baikonur.

8:58 am

A Russian Proton rocket went out of control and crashed mere seconds after launch today at Baikonur.

Video below the fold. It appears the rocket’s avionics had completely failed so that the engines could no longer control its flight. Obviously that is speculation. What is clear is that the failure was not because of a problem with the rocket’s Briz-M upper stage, which has been the source of the five Proton failures during the past three years.

This is very very very bad news for the Russian commercial rocket effort. They have been trying to recover from those earlier failures, and with the string of successes this year had appeared to doing so. Instead, they now have had their worst and most spectacular launch failure in decades, so spectacular it is reminiscent of the rocket failures of the 1950s. Worse, the failure is not because of the relatively new Briz-M upper stage, but in their well established, decades old first stage, indicating that there are some fundamental quality control problems in their manufacturing process that they have not fixed.

This cannot be good for their business, especially as they have some serious competition. Arianespace, though expensive, is very reliable. SpaceX, though new and essentially untried, is very competitive in price. So is Orbital Sciences.

Expect a lot of heads to roll.
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Voyager 1 has found the edge of the solar system to be far more complex than predicted by scientists.

8:44 am

The uncertainty of science: Voyager 1 has found the edge of the solar system to be far more complex than predicted by scientists.

Scientists had assumed that Voyager 1, launched in 1977, would have exited the solar system by now. That would mean crossing the heliopause and leaving behind the vast bubble known as the heliosphere, which is characterized by particles flung by the sun and by a powerful magnetic field.

The scientists’ assumption turned out to be half-right. On Aug. 25, Voyager 1 saw a sharp drop-off in the solar particles, also known as the solar wind. At the same time, there was a spike in galactic particles coming from all points of the compass. But the sun’s magnetic field still registers, somewhat diminished, on the spacecraft’s magnetometer. So it’s still in the sun’s magnetic embrace, in a sense.

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Kepler’s planet-hunting predecessor, COROT, has been shut down.

8:33 am

Kepler’s planet-hunting predecessor, CoRoT, has been shut down.

CoRoT suffered a computer failure on November, 2, 2012 and although the spacecraft is capable of receiving navigational commands, the French Space Agency CNES reports it can no longer retrieve data from its 30-centimeter telescope. After a valiant effort to try and restore the computer, CNES announced this week that the spacecraft has been retired. CoRoT’s journey will come to a fiery end as it will be deorbited and it will burn up on re-entry in Earth’s atmosphere.

CoRoT found 32 exoplanets with at least a hundred more candidates still to be confirmed.

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Two researchers have concluded that sterilizing spacecraft heading to Mars is largely a waste of money.

8:22 am

Two researchers have concluded that sterilizing spacecraft heading to Mars is largely a waste of money.

As far as Mars is concerned, say Fairén and Schulze-Makuch, such efforts are probably in vain since “Earth life has most likely already been transferred to Mars.” Meteorite impacts have had 3.8 billion years to spread Earth life forms to Mars. Several Earth spacecraft have visited Mars without undergoing the sterilization procedures now in place. If organisms transferred to Mars over the eons failed to survive, modern organisms would likely face the same fate. If they did survive, say Fairén and Schulze-Makuch, “it is too late to protect Mars from terrestrial life, and we can safely relax the planetary protection policies.”

They also note that NASA’s “Office of Planetary Protection is like an interplanetary Environmental Protection Agency” and that its “‘detailed and expensive’ efforts to keep Earth microorganisms off Mars are making missions to search for life on the red planet ‘unviable.’”

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A Russian Soyuz rocket successfully launched four commercial broadband satellites today for French Guiana.

4:59 pm

The competition heats up: A Russian Soyuz rocket successfully launched four commercial broadband satellites today for French Guiana.

The constellation’s orbit is designed to provide high-bandwidth Internet links to land masses located between 45 degrees north and 45 degrees south of the equator, which means mainly the developing world.

An interesting historical note of this story is that

O3b and SES officials have said that the company has regulatory rights to sufficient spectrum to put as many as 120 satellites in the same unusual orbit. O3b is making use of radio spectrum originally won, following a long battle, by a U.S. company called Teledesic, which had envisioned more than 800 satellites to provide broadband links worldwide. Teledesic ceased operations before launching its satellites.

Teledesic was a $9 billion satellite constellation proposed by Bill Gates back in 1998. They only launched one satellite, Teledesic 1, which was a failure. That this project has essentially come back to life fifteen years later is most intriguing.

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The Chinese astronauts have undocked from the Tiengong-1 space station and will return to Earth tomorrow.

9:03 am

The Chinese astronauts have undocked from the Tiengong-1 space station and will return to Earth tomorrow.

Following a separation from the Tiangong-1 at 7:05 a.m. Beijing Time, the manned Shenzhou-10 moved back to a point from where the spacecraft changed its orbit and flew around the target module. Under the command of ground-based professionals, Shenzhou-10 adjusted its flight gesture at a point behind Tiangong-1, and approached and rendezvoused with the target module.

The fly-around and rendezvous was apparently controlled by ground controllers, not the astronauts on board.

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A NASA ion engine has successfully completed more than five and a half years of continuous operation.

9:56 pm

A NASA ion engine has successfully completed more than five and a half years of continuous operation.

During the endurance test performed in a high vacuum test chamber at Glenn, the engine consumed about 1,918 pounds (870 kilograms) of xenon propellant, providing an amount of total impulse that would take more than 22,000 (10,000 kilograms) of conventional rocket propellant for comparable applications.

So, now what? Will this engineering achievement be filed away, like so many other past NASA engineering projects, or will it be used for something?

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Two Russian astronauts completed a six-hour-plus spacewalk today, preparing the station for Russia’s science module.

9:48 pm

Two Russian astronauts completed a six-hour-plus spacewalk today, preparing the station for Russia’s science module.

This science module is many years late, delayed due to Russia’s financial problems after the fall of the Soviet Union. That the Russians are finally about to launch it is another indication, like their recent Proton rocket launch successes, that there space program might be experiencing a resurgence.

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