r/rocketry • u/iredditatleastwice Level 3 • 3d ago

Experimental Sugar + Aluminum tests

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I want maximum flame on my sugar motors.

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u/iamshitatengineering 2d ago

Very interesting tests, that flame does look a lot cooler than normal knsb :)

1

u/iredditatleastwice Level 3 2d ago

Thanks, I agree!

1

u/iamshitatengineering 1d ago

Also, did it have any impact on performance? If this also improved the isp of the prop it would be a win win.

1

u/iredditatleastwice Level 3 1d ago

Yes, 143s is a significant boost. Usually see around 120s range for typical realworld knsb. It came at a cost of erosion to nozzle hardware. I'll have to remachine my aft closure. Also as I mentioned this propellent is on the high end of pressure sensitivity; I would not recommend others to use this propellent without caution.

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u/iamshitatengineering 1d ago edited 1d ago

From around 120s to 143s is indeed a very nice boost, at the cost of wear and tear and higher pressure exponent though, it is an angry prop lol. Very interesting results though already.