H Class Rocket Motor

Contrail H222-HP

Contrail Rockets
Unknown
Ø 38mm
Total Impulse
161.0Ns
Burn Time
0.70s
Avg Thrust
225.0N
Max Thrust
619.0N

Thrust Profile (N)

0.70s Burn Window

Engineered by Contrail Rockets, the H222-HP is a 38mm solid rocket motor designed for high-power rocketry (HPR). As an official H-class motor, it delivers a total impulse of 161.0 Ns over a 0.70 second burn window.

With an average thrust of 225.0 N and a peak of 619.0 N, it features a regressive thrust curve optimal for heavy rockets requiring high off-the-pad acceleration.

Technical Specifications

Tripoli Rocketry Association, Inc.
Diameter 38 mm
Length 407 mm
Hardware 38 16 M HP (140CC)
Delays (s) P
Specific Impulse 746 s
Peak Thrust 684.34 N
Peak Time —
T/W Ratio 44.11
Propellant Standard
Profile regressive
Type hybrid
Sparky No

Mass Budget

520g Total
Casing (Dry)
498.0g
95.8%
Propellant
22.0g
4.2%
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

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

H165R

AeroTech

H
dual-peak
Total: 165 Ns
Ø 29mm
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