Tag: collision

Not Even a Crash Can Keep This Flying Robot Down

By Sophie Bushwick | June 14, 2012 2:54 pm

Robots can venture into areas too dangerous for humans, like unstable collapsed buildings and potentially radioactive power plants, but they won’t get very far without the ability to pick themselves up after getting knocked down. At the Swiss Federal Institute of Technology in Lausanne, the Laboratory of Intelligent Systems designs flying robots capable of self-recovery.

For the autonomous flying robot in the video, the key to surviving a crash is a light and flexible carbon fiber cage that protects its rotors and absorbs the energy from the collision. After a fall, carbon fiber legs automatically extend from the cage to push the ‘bot back into a standing position, from which it can take off once more.

[via PopSci]


X Marks the Spot of a Dramatic Asteroid Collision

By Jennifer Welsh | October 14, 2010 11:18 am

asteroid mashup

Out in the asteroid belt beyond Mars, two asteroids rendezvous-ed in the darkness, with explosive results. Atomic bomb level explosive.

These two asteroids, one probably 400 feet wide and the other, smaller asteroid around 10 to 15 feet across, collided sometime in early 2009. This is the first time we humans have observed an asteroid impact right after it has occurred, and the first time a resulting x-shape has been seen. Researchers aren’t sure what caused the novel shape, and they were surprised by how long the dust tail has lasted. The analysis of the finding, originally announced earlier this year, is published in Nature this week.

From Phil Plait, DISCOVER’s Bad Astronomer:

This is a false-color image showing the object, called P/2010 A2, in visible light. The long tail of debris is obvious; this is probably dust being blown back by the solar wind, similar to the way a comet’s tail is blown back. What apparently has happened is that two small, previously-undiscovered asteroids collided, impacting with a speed of at least 5 km/sec (and possibly faster). The energy in such a collision is like setting off a nuclear bomb, or actually many nuclear bombs! The asteroids shattered, and much of the debris expanded outward as pulverized dust.

Looking at the image, the bright spot to the left is most likely what’s left of one of the two asteroids, a chunk of rock estimated to be a mere 140 meters (450 feet) across. In the press release they’re not clear about the curved line emanating to the right of the nucleus. It may be — and I’m spitballing here — dust blown back from a stream of chunks, since the tail is broad and appears to originate from that swept curve, and not from the nucleus itself. The other filament perpendicular to the curve is from yet another piece of debris.

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