Ants on ISS.
It ain’t an accident, they were brought there by Cygnus as part of an experiment to see how an ant colony adapts to weightlessness.
Tag: engineering
In celebration of the tenth anniversary of Opportunity’s landing on Mars, the journal Science publishes a special section of the newest findings from Mars.
In celebration of the tenth anniversary of Opportunity’s landing on Mars, the journal Science has published a special section of the newest findings from Mars.
The main conclusion of all this research is that Mars was once potentially habitable, though there is no evidence so far to show that anything actually inhabited it. The data obtained however is now giving scientists clues on the best places to look for the remains of that ancient life, should it exist.
Virgin Galactic today announced the successful testing of their own new rocket engine.
The competition heats up: Virgin Galactic today announced the successful testing of their own new rocket engine.
Virgin Galactic, the world’s first commercial spaceline, announced today that it has reached a significant milestone in the testing of a new family of liquid rocket engines for LauncherOne, the company’s small satellite launch vehicle. As part of a rapid development program, Virgin Galactic has now hot-fired both a 3,500 lbf thrust rocket engine and a 47,500 lbf thrust rocket engine, called the “NewtonOne” and “NewtonTwo” respectively. Further, the NewtonOne engine has successfully completed a full-mission duty cycle on the test stand, firing for the five-minute duration expected of the upper stage engine on a typical flight to orbit. These tests are being conducted on two new state-of-the-art test stands that the team designed, assembled and installed internally. [emphasis mine]
Though they say that these engines are for their orbital rocket, not SpaceShipTwo, I find it interesting that their development was in-house, not by Scaled Composites which has so far been building everything for Virgin Galactic. Moreover, note the highlighted words, “rapid development program.” Though you should never be leisurely about this stuff in order to compete, giving this particular title to this engine program suggests they are in a particular hurry to develop it.
Both factoids suggest again that they are not happy with the performance of the hybrid engines Scaled Composites built for them, under their direction, and are now working hard to replace them.
A look at China’s plans to develop a heavy-lift rocket.
A look at China’s plans to develop a heavy-lift rocket.
A new study outlines the problems British researchers had in their 2012 attempt to drill down into a buried Antarctic lake.
A new study outlines the problems British researchers had in their 2012 attempt to drill down into a buried Antarctic lake.
The project had been under development for ten years, and yet:
According to the paper, problems started when the boiler that was intended to melt large quantities of snow to provide hot water for the drill failed to work properly because of short-circuiting in its control panel. More severe problems followed. The two parallel drills — one to drill the main borehole to reach the lake, and one to create a reservoir cavity to recirculate drilling water — ran too slowly. Other failures, including of components designed to ensure vertical drilling, exacerbated the problems.
“The drilling was essentially undertaken blindly,” says Siegert. Probably because one or both holes were not drilled vertically, the cavity failed to link with the main borehole. Water also leaked into the cavity drill and froze the hose in the drill hole. Attempts to remove the hose failed, so it had to be cut. At that point, and with not enough fuel left to reach the lake, Siegert gave up.
Seems to me that these problems — some very basic engineering design errors — are a good example of some basic incompetence. If I was providing financial backing to this project I would probably demand that a lot of people be fired before I would give them anymore money.
The report also has this interesting detail which confirms the doubts about the Russian drilling effort:
In 2012, Russian scientists broke into Lake Vostok, by far the largest of Antarctica’s hidden lakes, using a kerosene-fuelled drill. But their samples are spoiled with drill fluid and the bacteria they contain are probably contaminant species.
Penn State’s Google Lunar X Prize team has now launched a kickstarter campaign to fund its effort.
Penn State’s Google Lunar X Prize team has now launched a kickstarter campaign to fund its effort.
Because of a computer reboot, Rosetta’s revival from hibernation came 18 minutes late.
Because of a computer reboot, Rosetta’s revival from hibernation came 18 minutes late.
[Rosetta] woke yesterday as planned, to the relief of ESA scientists – but the signal it sent home to confirm it was awake reached Earth late, fraying the nerves of some mission controllers in the meantime. Due to call at 1745 GMT, Rosetta did not announce its revival until 1818. Fifteen minutes could be explained because the spacecraft’s computer checked the on-board clock only every quarter of an hour. The additional 18 minutes, however, was a mystery.
Now, the telemetry has shown that soon after Rosetta’s first revival sequence had started, the on-board computer automatically rebooted and the sequence started again, causing 18 minutes of delay.
It seems all is well now, though the engineers plan to spend some time pinpointing the cause of the reboot.
A donut-sized rock suddenly appears in front of the Mars rover Opportunity.
A donut-sized rock suddenly appears in front of the Mars rover Opportunity.
NASA announced the discovery of the rock at an event at Caltech in Pasadena this past Thursday night, dubbing the rock “Pinnacle Island.” “It’s about the size of a jelly doughnut,” NASA Mars Exploration Rover lead scientist Steve Squyres told Discovery News. “It was a total surprise, we were like ‘wait a second, that wasn’t there before, it can’t be right. Oh my god! It wasn’t there before!’ We were absolutely startled.”
Beautiful machinery.
Another lunar Earthrise image from the 1960s restored and enhanced.
Another lunar Earthrise image from the 1960s restored and enhanced.
One must remember that when these images from the 1960s were first taken, it was the very first time humans were seeing our home world from a distance. While today we are somewhat sanguine about such images, then no one knew exactly what the Earth looked like. These images told us.
If you want to see the inside of NASA’s gigantic Vehicle Assembly Building (VAB), you better hurry. Tours cease in February.
If you want to see the inside of NASA’s gigantic Vehicle Assembly Building (VAB), you better hurry. Tours cease in February.
Tours into the VAB have only occurred during gaps in the American space effort. I was lucky to visit Florida back in 1977, after the end of the Apollo program and before the start of the shuttle program, so my tour went inside the VAB. For the last few years, since the shuttle’s retirement, interior tours resumed.
The tour is worth it. If you can find the time and money, get down there now!
The European Space Agency has now released its first cost estimates for upgrading and replacing its Ariane 5 rocket.
The European Space Agency has now released its first cost estimates for upgrading and replacing its Ariane 5 rocket.
Europe needs to find about 1 billion euros ($1.35 billion) to complete development of an upgrade to its current Ariane 5 heavy-lift rocket, which would fly in 2018 and be capable of lifting satellites weighing 11,000 kilograms into geostationary transfer orbit, European Space Agency Director General Jean-Jacques Dordain said Jan. 17. The Ariane 5 upgrade, called Ariane 5 ME, will be on the table for ESA governments to decide, alongside the new Ariane 6 rocket, at a meeting scheduled for December in Luxembourg.
In a press briefing in Paris, Dordain said it is too early to say how much Ariane 6 will cost to develop. Government and industry estimates have ranged between 3 billion and 4 billion euros, with an inaugural flight in 2021.
As Doug Messier notes in his worthwhile analysis of these numbers, “Europe is in deep trouble.” From a customer’s perspective, these new rockets won’t fly (pun intended). The cost is too high and the development time too long. By the time they get both Ariane 5 and Ariane 6 ready for launch they will be obsolete and overpriced, when compared to the rocket’s that will already be available from their competitors.