Total Impulse
673.0Ns
Burn Time
2.80s
Avg Thrust
238.0N
Max Thrust
490.0N
Thrust Profile (N)
2.80s Burn WindowEngineered by Contrail Rockets, the J246-HP is a 38mm solid rocket motor designed for high-power rocketry (HPR). As an official J-class motor, it delivers a total impulse of 673.0 Ns over a 2.80 second burn window.
With an average thrust of 238.0 N and a peak of 490.0 N, it features a dual-peak thrust curve optimal for heavy rockets requiring high off-the-pad acceleration.
Technical Specifications
Tripoli Rocketry Association, Inc.Diameter 38 mm
Length 922 mm
Hardware 38 36 M HP (550CC)
Delays (s) P
Specific Impulse 623.7 s
Peak Thrust 526.94 N
Peak Time T+ 0.134s
T/W Ratio 28.18
Propellant Standard
Profile dual-peak
Type hybrid
Sparky No
Mass Budget
861g TotalCasing (Dry)
751.0g
87.2%
Propellant
110.0g
12.8%
Live Sizing
Flight Envelope
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Comparable J-Class Alternatives
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