G Class Rocket Motor

AeroTech HP-G75M

AeroTech
Metalstorm
Ø 29mm
Total Impulse
120.4Ns
Burn Time
1.61s
Avg Thrust
74.7N
Max Thrust
102.0N

Thrust Profile (N)

1.61s Burn Window

Engineered by AeroTech, the HP-G75M is a 29mm solid rocket motor designed for model rocketry. As an official G-class motor, it delivers a total impulse of 120.4 Ns over a 1.61 second burn window.

With an average thrust of 74.7 N and a peak of 102.0 N, it features a regressive thrust curve optimal for general sport flying. It utilizes the Metalstorm propellant formulation, dictating its specific impulse and exhaust signature.

Technical Specifications

Tripoli Rocketry Association, Inc.
Diameter 29 mm
Length 123.9 mm
Hardware Single Use
Delays (s) 4,6,7,8,10
Specific Impulse 183.7 s
Peak Thrust 101.5 N
Peak Time T+ 0.021s
T/W Ratio 58.16
Propellant Metalstorm
Profile regressive
Type SU
Sparky Yes

Mass Budget

131g Total
Casing (Dry)
64.2g
49.0%
Propellant
66.8g
51.0%
Live Sizing
Flight Envelope

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Comparable G-Class Alternatives

G54W

AeroTech

G
dual-peak
Total: 81 Ns
Ø 29mm

G104T

AeroTech

G
regressive
Total: 82 Ns
Ø 29mm

G74W

AeroTech

G
neutral
Total: 83 Ns
Ø 29mm

84G88-11A

Cesaroni

G
dual-peak
Total: 84 Ns
Ø 29mm

G142

AeroTech

G
neutral
Total: 84 Ns
Ø 29mm

G63

SkyR

G
regressive
Total: 85 Ns
Ø 29mm
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