J Class Rocket Motor

Cesaroni 784J425-16A

Cesaroni Technology
Blue Streak
Ø 38mm
Total Impulse
783.9Ns
Burn Time
1.84s
Avg Thrust
426.9N
Max Thrust
631.0N

Thrust Profile (N)

1.84s Burn Window

Engineered by Cesaroni Technology, the 784J425-16A is a 38mm solid rocket motor designed for high-power rocketry (HPR). As an official J-class motor, it delivers a total impulse of 783.9 Ns over a 1.84 second burn window.

With an average thrust of 426.9 N and a peak of 631.0 N, it features a regressive thrust curve optimal for general sport flying. It utilizes the Blue Streak propellant formulation, dictating its specific impulse and exhaust signature.

Technical Specifications

Tripoli Rocketry Association, Inc.
Diameter 38 mm
Length 419 mm
Hardware Pro38-6G
Delays (s) 7,9,11,13,16
Specific Impulse 197.3 s
Peak Thrust 720.02 N
Peak Time T+ 0.021s
T/W Ratio 62.17
Propellant Blue Streak
Profile regressive
Type reload
Sparky No

Mass Budget

700g Total
Casing (Dry)
295.0g
42.1%
Propellant
405.0g
57.9%
Live Sizing
Flight Envelope

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