Thrust Profile (N)
1.71s Burn WindowEngineered by AeroTech, the G53FJ is a 29mm solid rocket motor designed for model rocketry. As an official G-class motor, it delivers a total impulse of 90.9 Ns over a 1.71 second burn window.
With an average thrust of 53.1 N and a peak of 87.3 N, it features a neutral thrust curve optimal for general sport flying. It utilizes the Black Max propellant formulation, dictating its specific impulse and exhaust signature.
Technical Specifications
National Association of RocketryDiameter 29 mm
Length 124 mm
Hardware RMS-29/40-120
Delays (s) 4,5,6,7,8,10
Specific Impulse 154.4 s
Peak Thrust 85.65 N
Peak Time T+ 0.188s
T/W Ratio 37.07
Propellant Black Max
Profile neutral
Type reload
Sparky No
Mass Budget
146g TotalCasing (Dry)
86.0g
58.9%
Propellant
60.0g
41.1%
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.
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.