H Class Rocket Motor

Cesaroni 186H42-10A

Cesaroni Technology
Mellow
Ø 29mm
Total Impulse
186.0Ns
Burn Time
4.41s
Avg Thrust
42.2N
Max Thrust
83.5N

Thrust Profile (N)

4.41s Burn Window

Engineered by Cesaroni Technology, the 186H42-10A is a 29mm solid rocket motor designed for high-power rocketry (HPR). As an official H-class motor, it delivers a total impulse of 186.0 Ns over a 4.41 second burn window.

With an average thrust of 42.2 N and a peak of 83.5 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 29 mm
Length 231 mm
Hardware Pro29-4G
Delays (s) 1,3,5,7,10
Specific Impulse 179.7 s
Peak Thrust 82.8 N
Peak Time T+ 0.035s
T/W Ratio 17.78
Propellant Mellow
Profile dual-peak
Type reload
Sparky No

Mass Budget

242g Total
Casing (Dry)
136.5g
56.4%
Propellant
105.5g
43.6%
Live Sizing
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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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