Similarly the moment of inertia of the rocket about an axis of rotation is defined as where r is the distance of an infinitesimal “slice” of rocket with mass dm along the roll axis and M is the total mass of the rocket.I am modifying mine, for 24mm E motors, using a screw type motor retainer, slotting the body tube, redrawing the fins, with through tube slot extensions, installing an ejection baffle, a GPS tracker and nose cone ballast. The Nike Smoke is a nice rocket, but under powered on 18mm motors.
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