Total Impulse
752.0Ns
Burn Time
3.10s
Avg Thrust
242.0N
Max Thrust
875.0N
Thrust Profile (N)
3.10s Burn WindowEngineered by Contrail Rockets, the J242-PVC is a 38mm solid rocket motor designed for high-power rocketry (HPR). As an official J-class motor, it delivers a total impulse of 752.0 Ns over a 3.10 second burn window.
With an average thrust of 242.0 N and a peak of 875.0 N, it features a regressive thrust curve optimal for heavy rockets requiring high off-the-pad acceleration.
Technical Specifications
Tripoli Rocketry Association, Inc.Diameter 38 mm
Length 1227 mm
Hardware Single Use
Delays (s) P
Specific Impulse 696.9 s
Peak Thrust 448.27 N
Peak Time T+ 0.011s
T/W Ratio 23.16
Propellant Standard
Profile regressive
Type hybrid
Sparky No
Mass Budget
1065g TotalCasing (Dry)
955.0g
89.7%
Propellant
110.0g
10.3%
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 J-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.