Thursday, October 30, 2008

Is NASA's Ares Doomed?

Saturn 5, Space Shuttle, Ares 1, Ares 5
(Image from Internet Encyclopedia Of Science)

From Orlando Sentinel:

CAPE CANAVERAL - Bit by bit, the new rocket ship that is supposed to blast America into the second Space Age and return astronauts to the moon appears to be coming undone.

First was the discovery that it lacked sufficient power to lift astronauts in a state-of-the-art capsule into orbit. Then engineers found out that it might vibrate like a giant tuning fork, shaking its crew to death.

Now, in the latest setback to the Ares I, computer models show the ship could crash into its launch tower during liftoff.

The issue is known as "liftoff drift." Ignition of the rocket's solid-fuel motor makes it "jump" sideways on the pad, and a southeast breeze stronger than 12.7 mph would be enough to push the 309-foot-tall ship into its launch tower.

Worst case, the impact would destroy the rocket. But even if that doesn't happen, flames from the rocket would scorch the tower, leading to huge repair costs.

"We were told by a person directly involved [in looking at the problem] that as they incorporate more variables into the liftoff-drift-curve model, the worse the curve becomes," said one NASA contractor, who asked not to be named because he wasn't authorized to discuss Ares.

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