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Guru
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New Throttled Rocket

07/16/2007 1:01 PM

NASA is revamping an old workhorse of the 1960s to provide high-power throttle control for the next lunar lander rocket.

Says NASA: "The Apollo Lunar Module (LM) descent engine, the all-time throttling champ, did it perfectly on six landings in 1969-72. It could throttle from 10,125 lbs down to 1,250 lbs. It was also a simple engine, burning corrosive fuel and oxidizer that ignited on contact, and fed by pressurized tanks, eliminating the need for pumps."

However, the LM descent engine just do not have the efficiency and environmental friendliness required by NASA's new Lunar lander program. Hence the unthrottled Pratt & Whitney Rocketdyne 'Common Extensible Cryogenic Engine'--"CECE" for short, also used in the 60s before the Apollo Lunar landing, is now being revised to provide the required thrust and throttle control.

Read the whole story in NASA's Throttling Back to the Moon article.

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Guru
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#1

Re: New Throttled Rocket

07/16/2007 2:25 PM

yeah - rocket science

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Power-User

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#2

Re: New Throttled Rocket

07/17/2007 4:02 AM

NASA needs to let the LM engine ALONE! IT WORKS!!!! If this new engine is more complicated, there is more room for failure! James

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Guru
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#3
In reply to #2

Re: New Throttled Rocket

07/17/2007 8:12 AM

Did quite a good job of throttle control for Apollo 13 as well....

They should have never scrapped the Saturn V, but they had to do that to convince congress to fund the shuttle.

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Guru
Engineering Fields - Electrical Engineering - New Member

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#4
In reply to #2

Re: New Throttled Rocket

07/17/2007 10:33 AM

The worm has turned since the 1960's. NASA is a greener place these days.

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