H Class Rocket Motor

SkyR H78

Sky Ripper Systems
Unknown
Ø 29mm
Total Impulse
172.9Ns
Burn Time
2.75s
Avg Thrust
78.0N
Max Thrust
150.4N

Thrust Profile (N)

2.75s Burn Window

Engineered by Sky Ripper Systems, the H78 is a 29mm solid rocket motor designed for high-power rocketry (HPR). As an official H-class motor, it delivers a total impulse of 172.9 Ns over a 2.75 second burn window.

With an average thrust of 78.0 N and a peak of 150.4 N, it features a regressive thrust curve optimal for general sport flying.

Technical Specifications

Tripoli Rocketry Association, Inc.
Diameter 29 mm
Length 523 mm
Hardware 29X520MM
Delays (s) P
Specific Impulse 3525 s
Peak Thrust 150.1 N
Peak Time T+ 0.08s
T/W Ratio 28
Propellant Standard
Profile regressive
Type hybrid
Sparky No

Mass Budget

284g Total
Casing (Dry)
279.0g
98.2%
Propellant
5.0g
1.8%
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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