H Class Rocket Motor

KBA H225R

Kosdon by AeroTech
Redline
Ø 29mm
Total Impulse
241.2Ns
Burn Time
1.08s
Avg Thrust
221.8N
Max Thrust
281.0N

Thrust Profile (N)

1.08s Burn Window

Engineered by Kosdon by AeroTech, the H225R is a 29mm solid rocket motor designed for high-power rocketry (HPR). As an official H-class motor, it delivers a total impulse of 241.2 Ns over a 1.08 second burn window.

With an average thrust of 221.8 N and a peak of 281.0 N, it features a dual-peak thrust curve optimal for general sport flying. It utilizes the Redline propellant formulation, dictating its specific impulse and exhaust signature.

Technical Specifications

Tripoli Rocketry Association, Inc.
Diameter 29 mm
Length 291 mm
Hardware Kosdon 29-250
Delays (s) M
Specific Impulse 184.9 s
Peak Thrust 275.52 N
Peak Time T+ 0.971s
T/W Ratio 71.55
Propellant Redline
Profile dual-peak
Type reload
Sparky No

Mass Budget

316g Total
Casing (Dry)
183.0g
57.9%
Propellant
133.0g
42.1%
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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