I don't know. When I was in university we had similar projects going on (scratch-fabricated hybrid rocket motors, not aerospikes though) and I know there were non-citizen students participating. Didn't seem to be a problem.
I think the issue would be that they intend this engine to be the upper stage of a satellite launch platform. ITAR kicks in when you get up to that capability I believe.
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I don't know. When I was in university we had similar projects going on (scratch-fabricated hybrid rocket motors, not aerospikes though) and I know there were non-citizen students participating. Didn't seem to be a problem.
I think the issue would be that they intend this engine to be the upper stage of a satellite launch platform. ITAR kicks in when you get up to that capability I believe.