Total Impulse
795.0Ns
Burn Time
1.60s
Avg Thrust
497.0N
Max Thrust
2500.0N
Thrust Profile (N)
1.60s Burn WindowEngineered by Contrail Rockets, the J555-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 795.0 Ns over a 1.60 second burn window.
With an average thrust of 497.0 N and a peak of 2500.0 N, it features a neutral thrust curve optimal for heavy rockets requiring high off-the-pad acceleration.
Technical Specifications
Tripoli Rocketry Association, Inc.Diameter 38 mm
Length 1227 mm
Hardware 38 48 XF HP (735CC)
Delays (s) P
Specific Impulse 488.2 s
Peak Thrust 1344.81 N
Peak Time T+ 0.058s
T/W Ratio 44.75
Propellant Standard
Profile neutral
Type hybrid
Sparky No
Mass Budget
1132g TotalCasing (Dry)
966.0g
85.3%
Propellant
166.0g
14.7%
Live Sizing
Flight Envelope
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Comparable J-Class Alternatives
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