I Class Rocket Motor

Cesaroni 395I55-9A

Cesaroni Technology
Mellow
Ø 38mm
Total Impulse
394.6Ns
Burn Time
7.51s
Avg Thrust
55.2N
Max Thrust
94.5N

Thrust Profile (N)

7.51s Burn Window

Engineered by Cesaroni Technology, the 395I55-9A is a 38mm solid rocket motor designed for high-power rocketry (HPR). As an official I-class motor, it delivers a total impulse of 394.6 Ns over a 7.51 second burn window.

With an average thrust of 55.2 N and a peak of 94.5 N, it features a dual-peak thrust curve optimal for sustainer stages and high-altitude attempts. It utilizes the Mellow propellant formulation, dictating its specific impulse and exhaust signature.

Technical Specifications

Canadian Association of Rocketry
Diameter 38 mm
Length 245 mm
Hardware Pro38-3G
Delays (s) 2,4,6,9
Specific Impulse 179.7 s
Peak Thrust 92.3 N
Peak Time T+ 0.033s
T/W Ratio 12.88
Propellant Mellow
Profile dual-peak
Type reload
Sparky No

Mass Budget

437g Total
Casing (Dry)
213.2g
48.8%
Propellant
223.8g
51.2%
Live Sizing
Flight Envelope

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