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If you use an excess of carbon containing propellants, you will likely make a highly luminous, smoky flame. You may also coke up your combustion chamber. I would look at excess oxidiser to avoid these issues.
True. It's called "coking" with kerosene. I believe it's not as big a problem with methane though.
Bob Clark
Old Space rule of acquisition (with a nod to Star Trek - the Next Generation):
“Anything worth doing is worth doing for a billion dollars.”
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XCOR’S physical assets and intellectual property were purchased by a non-profit devoted to instructing students in aerospace topics:
http://www.parabolicarc.com/2018/04/23/ … assets-ip/
Perhaps they could do the experiments with the XCOR engines.
By the way, perhaps this non-profit could team with universities to apply for the Base11 Challenge for a university team to launch a liquid-fueled single stage rocket to the 100 km line for suborbital space:
https://www.herox.com/spacechallenge/le … ement-view
I was thinking they could supply the XCOR engines. However, the rules say the rocket must be “designed, built, and tested” by the university teams. So it’s a question if it would be allowed to use the XCOR engines.
Bob Clark
Last edited by RGClark (2018-10-27 07:40:24)
Old Space rule of acquisition (with a nod to Star Trek - the Next Generation):
“Anything worth doing is worth doing for a billion dollars.”
Offline