Total Impulse
346.2Ns
Burn Time
2.75s
Avg Thrust
150.0N
Max Thrust
155.5N
Thrust Profile (N)
2.75s Burn WindowEngineered by Ellis Mountain, the I150 is a 38mm solid rocket motor designed for high-power rocketry (HPR). As an official I-class motor, it delivers a total impulse of 346.2 Ns over a 2.75 second burn window.
With an average thrust of 150.0 N and a peak of 155.5 N, it features a neutral thrust curve optimal for general sport flying.
Technical Specifications
Tripoli Rocketry Association, Inc.Diameter 38 mm
Length 229 mm
Hardware 38X285.7 38X314(D)
Delays (s) 20,P
Specific Impulse 205.4 s
Peak Thrust 212.94 N
Peak Time T+ 0.872s
T/W Ratio 36.23
Propellant Standard
Profile neutral
Type reload
Sparky No
Mass Budget
422g TotalCasing (Dry)
250.2g
59.3%
Propellant
171.8g
40.7%
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 I-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.