J Class Rocket Motor

AeroTech J615ST-20A

AeroTech
Super Thunder
Ø 54mm
Total Impulse
745.5Ns
Burn Time
1.20s
Avg Thrust
615.1N
Max Thrust
933.9N

Thrust Profile (N)

1.20s Burn Window

Engineered by AeroTech, the J615ST-20A is a 54mm solid rocket motor designed for high-power rocketry (HPR). As an official J-class motor, it delivers a total impulse of 745.5 Ns over a 1.20 second burn window.

With an average thrust of 615.1 N and a peak of 933.9 N, it features a dual-peak thrust curve optimal for general sport flying. It utilizes the Super Thunder propellant formulation, dictating its specific impulse and exhaust signature.

Technical Specifications

Tripoli Rocketry Association, Inc.
Diameter 54 mm
Length 240.4 mm
Hardware RMS-54/852
Delays (s) 4,8,12,16,20
Specific Impulse 205.1 s
Peak Thrust 829.66 N
Peak Time T+ 0.037s
T/W Ratio 78.21
Propellant Super Thunder
Profile dual-peak
Type reload
Sparky No

Mass Budget

801.6999999999999g Total
Casing (Dry)
431.2g
53.8%
Propellant
370.5g
46.2%
Live Sizing
Flight Envelope

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