H Class Rocket Motor

Cesaroni 255H400-13A

Cesaroni Technology
Vmax
Ø 38mm
Total Impulse
255.0Ns
Burn Time
0.64s
Avg Thrust
396.0N
Max Thrust
448.0N

Thrust Profile (N)

0.64s Burn Window

Engineered by Cesaroni Technology, the 255H400-13A is a 38mm solid rocket motor designed for high-power rocketry (HPR). As an official H-class motor, it delivers a total impulse of 255.0 Ns over a 0.64 second burn window.

With an average thrust of 396.0 N and a peak of 448.0 N, it features a dual-peak thrust curve optimal for general sport flying. It utilizes the Vmax propellant formulation, dictating its specific impulse and exhaust signature.

Technical Specifications

Canadian Association of Rocketry
Diameter 38 mm
Length 186 mm
Hardware Pro38-2G
Delays (s) 4,6,8,10,13
Specific Impulse 212.4 s
Peak Thrust 439.18 N
Peak Time T+ 0.3s
T/W Ratio 142.34
Propellant Vmax
Profile dual-peak
Type reload
Sparky No

Mass Budget

283.6g Total
Casing (Dry)
161.2g
56.8%
Propellant
122.4g
43.2%
Live Sizing
Flight Envelope

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Comparable H-Class Alternatives

H155F

Kosdon

H
dual-peak
Total: 161 Ns
Ø 29mm

H300-HP

Contrail

H
neutral
Total: 161 Ns
Ø 38mm

H222-HP

Contrail

H
regressive
Total: 161 Ns
Ø 38mm

H55W

AeroTech

H
regressive
Total: 162 Ns
Ø 29mm

163H133-14A

Cesaroni

H
dual-peak
Total: 163 Ns
Ø 29mm

164H90-12A

Cesaroni

H
dual-peak
Total: 164 Ns
Ø 29mm
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