Total Impulse
128.0Ns
Burn Time
1.80s
Avg Thrust
69.0N
Max Thrust
137.9N
Thrust Profile (N)
1.80s Burn WindowEngineered by Sky Ripper Systems, the G69 is a 29mm solid rocket motor designed for model rocketry. As an official G-class motor, it delivers a total impulse of 128.0 Ns over a 1.80 second burn window.
With an average thrust of 69.0 N and a peak of 137.9 N, it features a regressive thrust curve optimal for general sport flying.
Technical Specifications
Tripoli Rocketry Association, Inc.Diameter 29 mm
Length 406 mm
Hardware 29X406.4MM (125CC)
Delays (s) P
Specific Impulse 2609.6 s
Peak Thrust 137.51 N
Peak Time T+ 0.04s
T/W Ratio 29.8
Propellant Standard
Profile regressive
Type hybrid
Sparky No
Mass Budget
236g TotalCasing (Dry)
231.0g
97.9%
Propellant
5.0g
2.1%
Live Sizing
Flight Envelope
Design wings in your spreadsheet
AeroSheet loads airfoils directly into Google Sheets. Polars, 3D splines, Fusion 360 export, without leaving your spreadsheet.
Install in Google Sheets coming soon Comparable G-Class Alternatives
Veenie Kit
Need a custom engineering simulator?
The 3D engine on this page is built by Veenie Aerospace. We build bespoke, browser-native digital twins, aerodynamic simulators, and AI physics tools for UAV startups and defense contractors.