Thrust Profile (N)
2.18s Burn WindowEngineered by AeroTech, the G38FJ is a 29mm solid rocket motor designed for model rocketry. As an official G-class motor, it delivers a total impulse of 87.7 Ns over a 2.18 second burn window.
With an average thrust of 40.2 N and a peak of 78.2 N, it features a regressive thrust curve optimal for general sport flying. It utilizes the Black Max propellant formulation, dictating its specific impulse and exhaust signature.
Technical Specifications
National Association of RocketryDiameter 29 mm
Length 124 mm
Hardware Single Use
Delays (s) 4,7
Specific Impulse 162.5 s
Peak Thrust 52.93 N
Peak Time T+ 0.024s
T/W Ratio 32.54
Propellant Black Max
Profile regressive
Type SU
Sparky No
Mass Budget
126g TotalCasing (Dry)
71.0g
56.3%
Propellant
55.0g
43.7%
Live Sizing
Flight Envelope
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Comparable G-Class Alternatives
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