aerospike engine
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#1
10-06-2010, 09:07 PM


Abstract:
The aerospike engine is a type of rocket engine that maintains its aerodynamic efficiency across a wide range of altitudes through the use of an aerospike nozzle. It is a member of the class of altitude compensating nozzle engines. A vehicle with an aerospike engine uses 25“30% less fuel at low altitudes, where most missions have the greatest need for thrust. Aerospike engines have been studied for a number of years and are the baseline engines for many single-stage-to-orbit (SSTO) designs and were also a strong contender for the Space Shuttle main Engine. the term aerospike originally was used for a (very roughly conically tapering) truncated plug nozzle with some gas injection to form an ˜air spike™ to help make up for the absence of the tail of the plug.
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toms
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#2
12-06-2010, 05:43 PM

RE: aerospike engine plz must replay
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apalmeer
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#3
26-08-2010, 05:29 PM

please send full detail on given topics
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LOVELESH
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#4
28-11-2010, 06:35 PM

DEAR SIR,
I'M N ENGG. STUDENT LOVELESH GUPTA FROM SGSITS,UJJAIN. I'VE TO SUBMIT ANY MECH. PROJECT IN JAN. 2011 SO,I 'VE SELECT THE TOPIC OF "AEROSPIKE ENGINE." I'M 2nd YEAR STUDENT OF MECHANICAL ENGG. BRANCH. PLEASE SEND ALL THE DETAILS RELATED TO THIS TOPIC FOR HELPFUL TO ME PREPARED THIS PROJECT. EMAIL ID-"loveleshgupta24@gmail.com", cell no. 09827003507.
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#5
29-11-2010, 10:56 AM

In aerospike engine instead of firing the exhaust out of a small hole in the middle of a bell, it is fired along the outside edge of a wedge-shaped protrusion, the "spike". The spike forms one side of a virtual bell, with the other side being formed by the outside air . by this design we can over come the demerit of the conventional bell type nozzle (concept of bell nozzle is to efficiently direct the flow of exhaust gases from the rocket engine into one direction. but The exhaust would be a high-temperature mix of gases, has an effectively random momentum distribution, and if it is allowed to escape in that form, only a small part of the flow will be moving in the correct direction to contribute to forward thrust and other part of momentum would be random . so it never give thrust to rocket system )

The aerospike engine has two chief advantages over conventional rocket engines:

1.It automatically achieves close to maximum efficiency at both sea level and high altitude. A conventional engine would need to change the shape of its nozzle to achieve this.
2.The aerospike engine can change the direction of its thrust and steer by varying the rate at which fuel flows to different parts of the engine. No moving parts are needed, unlike in a conventional engine.


reference:
https://csulb.edu/colleges/coe/mae/views/project and implimentations/rocket/news_2003/det_06_21_2003.shtml
en.wikipediawiki/Aerospike_engine
nasa.gov/centers/marshall/news/background/facts/aerospike.html
air-attackpage/5/NASA-SR-71-LASRE-Project.html

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