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Guru
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NASA's Evolutionary Xenon Thruster (NEXT)

07/26/2006 7:30 AM

Aerojet has delivered the first of a new generation of propulsion thrusters to NASA's Glenn Research Center in Cleveland, OH (USA). NASA's Evolutionary Xenon Thruster (NEXT) is capable of operating continuously in excess of 30,000 hours to provide the large impulse needed for outer planetary exploration missions. The NEXT thrust level is three times higher than the NASA Solar Electric Propulsion Technology Application Readiness (NSTAR) ion thruster used on the Deep Space One mission. Fuel efficiency, or specific impulse, is 30 percent higher than the NSTAR ion thruster and is a ten-fold increase over today's chemical rocket engines. In addition, spacecraft using NEXT propulsion will use just 10 percent of the propellant of conventional chemical rocket propelled spacecraft.

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Anonymous Poster
#1

Redundant language..... DO U KNOW WHAT UR SAYING?

07/26/2006 11:55 PM

"Fuel efficiency .... is a ten-fold increase over today's chemical rocket engines. ....spacecraft using NEXT propulsion will use just 10 percent of the propellant of conventional chemical rocket propelled spacecraft." FYI-These statements are identical in meaning.

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Guru
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#2
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Re:Redundant language.....

07/27/2006 11:37 AM

If one reads the full story in context, the 10% figure is used to emphasize that there is more capacity for payload.

Don't expect to see 'pollution-free' rockets taking off from Earth any time soon. The thrust available from these things is tiny - they are just very long-playing!

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