Could a jet engine be run on nuclear power?

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SUMMARY

The discussion centers on the feasibility of using nuclear power in jet engines, specifically through the concept of nuclear thermal jet engines and their potential application in single-stage-to-orbit (SSTO) spacecraft. Participants reference the Convair X-6 program, which investigated the effects of radiation on aircraft systems rather than propulsion. The consensus indicates that while nuclear thermal jet engines could be theoretically possible, applying nuclear power to ramjets or scramjets is impractical due to the extremely short time air spends in the combustion chamber, making effective heat transfer challenging.

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  • Nuclear thermal propulsion concepts
  • Jet engine design principles
  • Heat transfer mechanisms in propulsion systems
  • Understanding of ramjet and scramjet operation
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  • Research the Convair X-6 program and its findings on radiation effects
  • Explore nuclear thermal propulsion technologies
  • Study heat transfer techniques relevant to high-speed propulsion
  • Investigate the limitations of ramjet and scramjet designs
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Aerospace engineers, propulsion system designers, and researchers interested in advanced propulsion technologies and nuclear applications in aviation.

FireStorm000
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I know people have designed nuclear rocket engines, but is there any reason you couldn't have a nuclear thermal jet engine? Simply take a conventional jet and swap out the combustion area with a small reactor? Could the same idea work at higher speeds with a nuclear ramjet, or scramjet equivalent?
 
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RandomGuy88 said:

Well I'll be damned; I was aware of that program, I just didn't think they had planned to put the reactors directly in the engines.

So this could potentially empower a SSTO space craft, with a hybrid nuclear thermal jet/rocket? How cool would that be?
 
FireStorm000 said:
Well I'll be damned; I was aware of that program, I just didn't think they had planned to put the reactors directly in the engines.

So this could potentially empower a SSTO space craft, with a hybrid nuclear thermal jet/rocket? How cool would that be?

Did you read the Wiki article? One sentence from it ought be enough for you to see they were not trying to propel the Bomber at all: "Its sole purpose was to investigate the effect of radiation on aircraft systems."
 
Bobbywhy said:
Did you read the Wiki article? One sentence from it ought be enough for you to see they were not trying to propel the Bomber at all: "Its sole purpose was to investigate the effect of radiation on aircraft systems."

...Read further. That's how far they actually tested. That wasn't the end goal: http://en.wikipedia.org/wiki/Convair_X-6#Development_plans
 
To answer your question about powering a ramjet or scramjet with nuclear power, I would say that it is a stretch with a ramjet and pretty much no way with a scramjet. The air passing through a scramjet is only in the combustion chamber for milliseconds at best. It would be very, very difficult to transfer a meaningful amount of heat into the flow in that amount of time. It is hard enough when you mix fuel with the air and then ignite it. Trying to transfer heat through convection from the sides would take much longer.
 
https://www.youtube.com/watch?v=xb7uZQ1_n4w

https://www.youtube.com/watch?v=w4MfrvMnnww

https://www.youtube.com/watch?v=0TzCPZyAmpQ

https://www.youtube.com/watch?v=udLJbSywzBM

https://www.youtube.com/watch?v=Dp-0Y8lQ-JQ
 

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