Nasa 'Flying Saucer' Test Bedevilled for Second Time by Botched Parachute

Nasa 'Flying Saucer' Test Bedevilled for Second Time by Botched Parachute
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Nasa's test run of a Mars landing system came to a quick end on Monday when the saucer-shaped vehicle's parachute tore away after partly unfurling high over the Pacific Ocean, a Nasa TV broadcast showed.

A similar problem bedevilled the Low Density Supersonic Decelerator's (LDSD) debut run last year. The parachute was redesigned and reinforced for the second flight, but more work will be needed before the system is ready to land heavy loads on Mars.

"This is exactly why we do tests like this," Nasa engineer and LDSD mission commentator Dan Coatta said after the test. "When we're actually ready to send spacecraft to Mars, we know that they are going to work when that big mission is on the line."

The 100-foot diameter parachute - the largest ever tested - was the second part of a two-part supersonic braking system Nasa has been developing for about five years, at a cost of about $230 million.

Like last year, LDSD's doughnut-shaped extension ring inflated as expected, adding surface area to increase the amount of friction and slow the vehicle's descent through the atmosphere.

Monday's test began with a massive helium balloon lifting off from the U.S. Navy Pacific Missile Range Facility on Kauai, Hawaii, at 7:43 a.m. HST (1743 GMT.)

About three hours later, the balloon reached its targeted altitude of 120,000 feet (36,576 meters), at which point LDSD separated for its test run. A solid-rocket motor booted LDSD up to about 180,000 feet (54,864 meters) - roughly five times higher than where commercial passenger jets fly - and sent it soaring at nearly 3,000 mph (4,828 kph), or four times the speed of sound.

The speed and altitude were intended to simulate conditions that a spacecraft plunging through the thin atmosphere of Mars would experience.

Recovery ships were standing by in the Pacific to recover the spacecraft, parachute and other equipment.

© Thomson Reuters 2015

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