Total Impulse
293.5Ns
Burn Time
1.10s
Avg Thrust
275.0N
Max Thrust
641.6N
Thrust Profile (N)
1.10s Burn WindowEngineered by Ellis Mountain, the H275 is a 29mm solid rocket motor designed for high-power rocketry (HPR). As an official H-class motor, it delivers a total impulse of 293.5 Ns over a 1.10 second burn window.
With an average thrust of 275.0 N and a peak of 641.6 N, it features a regressive thrust curve optimal for heavy rockets requiring high off-the-pad acceleration.
Technical Specifications
Tripoli Rocketry Association, Inc.Diameter 29 mm
Length 275 mm
Hardware SU 29x275
Delays (s) P
Specific Impulse 183.5 s
Peak Thrust 792.75 N
Peak Time T+ 0.012s
T/W Ratio 109.93
Propellant Standard
Profile regressive
Type SU
Sparky No
Mass Budget
255g TotalCasing (Dry)
92.0g
36.1%
Propellant
163.0g
63.9%
Live Sizing
Flight Envelope
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Comparable H-Class Alternatives
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