H Class Rocket Motor

Contrail H340-SP

Contrail Rockets
Unknown
Ø 38mm
Total Impulse
304.5Ns
Burn Time
0.95s
Avg Thrust
321.0N
Max Thrust
966.0N

Thrust Profile (N)

0.95s Burn Window

Engineered by Contrail Rockets, the H340-SP is a 38mm solid rocket motor designed for high-power rocketry (HPR). As an official H-class motor, it delivers a total impulse of 304.5 Ns over a 0.95 second burn window.

With an average thrust of 321.0 N and a peak of 966.0 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 719 mm
Hardware Single Use
Delays (s) P
Specific Impulse
Peak Thrust 920.32 N
Peak Time
T/W Ratio 40.1
Propellant Standard
Profile regressive
Type hybrid
Sparky No
Mass Budget Unavailable
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.

Google Sheets Install in Google Sheets coming soon
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.

Loading calendar...