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Old 04-08-2022, 09:01 AM
dugliss dugliss is offline
Intermediate Rocketeer
Join Date: Nov 2011
Location: Shoreline, Wa.
Posts: 74
Default Semroc SLS Aerodart launch on F22J?

Good morning all you BARs. I'm doing some pre launch research to see if I can launch my SLS Aerodart safely on F22J motors. This is the problem I'm having. I have been told that a safe stable launch requires a minimum Thrust to Weight ratio of 5:1. The ThrustCurve website which is very helpful matching motors to rockets tells me that although this motor will provide a T:W of 6:1, the lift off acceleration will be too slow meaning the rocket will be unstable. Thrust Curve puts this motor in the fail category for this rocket. Interestingly, I used ThrustCurve to find motors for the Aerodart in 2014 and then the F22J was in the "Motors that worked" category. I wonder why the result changed since 2014. Incidentally, the Aerodart will be launched on a 48" rod. Has anyone launched an SLS Aerodart on F22J successfully?
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