Michel Van said:I found a in-deep report from 1991, It show all test Reactor used in Rover program
"Rover nuclear rocket engine program: Overview of rover engine tests"
9,7 MB PDF
http://ntrs.nasa.gov/search.jsp?R=19920005899&hterms=Nuclear+Furnace&qs=Ntx%3Dmode%2520matchallpartial%2520%26Ntk%3DAll%26N%3D0%26Ntt%3DNuclear%2520Furnace
http://hdl.handle.net/2060/19920005899
5arg0n said:NASA published an end-project report on Rover in 1991, though much of it appears to be a collection of earlier materials. Large-scale experiments (as in giant white-hot gas plumes in the desert) ended in (I think)1968, though some modest control and refinement work went on a few more years. Warning! runs to about 270 pages in PDF.
Report No. CR-184279 [internal file no. 313-002-91-059]; available from the NASA tech reports server: http://ntrs.nasa.gov/
SOC said:Can anyone point me in the right direction to find either of these? I'm making a mess of things trying to get the damn NTRS search function to cooperate.
SOC said:Report No. CR-184279 [internal file no. 313-002-91-059]; available from the NASA tech reports server: http://ntrs.nasa.gov/
Can anyone point me in the right direction to find either of these? I'm making a mess of things trying to get the damn NTRS search function to cooperate.
Nuclear Propulsion for Space Applications
Yeah, Specific Impulse is a very non-intuitive unit.The video that Triton linked to is an interesting overview of the NERVA program. It also includes the best explanation for a rocket's specific impulse that I've seen yet. I've always felt the unit used (s) is odd, making it difficult to grasp what Isp indicates.
But as the video says, an Isp of 1 s means that one pound of propellant can supply 1 lb of thrust for one second. A real 'duh' moment for me![]()
There's a reason why it's called rocket science. But don't fret, Mr. Tsiolkovsky can be your friend, if you let him...Yeah, Specific Impulse is a very non-intuitive unit.
IMO, it's basically only useful for comparing very different rocket types to see which one is "better". And even then, you need to ask "better for what?" Because for surface launch, you want lots of propellant mass flow but you don't need that mass moving very fast (low Isp), but once you're up in orbit you can use a much smaller mass flow at higher speed (moderate to high Isp).
Been too long since I needed to use calculus or even algebra, those equations make my head hurt these days.There's a reason why it's called rocket science. But don't fret, Mr. Tsiolkovsky can be your friend, if you let him...
I love the old school certificates like that!
Dear Colleagues!
Many years ago I saw a video on Youtube about a test of a nuclear rocket engine Phoebus. It was a video from a high-speed camera, and the video showed the reactor core during the engine startup (I think a mirror was used).
Now I can't find this video. Please help me find this video?
Sorry! It is my technical mistake.Dear JetPropulsion
There are allot members in this forum, who not under stand the Russian language
So if can you put a english translation (with google) in your post it would help us allot
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