I Class Rocket Motor

Contrail I290-SP

Contrail Rockets
Unknown
Ø 38mm
Total Impulse
430.0Ns
Burn Time
1.50s
Avg Thrust
286.6N
Max Thrust
635.5N

Thrust Profile (N)

1.50s Burn Window

Engineered by Contrail Rockets, the I290-SP is a 38mm solid rocket motor designed for high-power rocketry (HPR). As an official I-class motor, it delivers a total impulse of 430.0 Ns over a 1.50 second burn window.

With an average thrust of 286.6 N and a peak of 635.5 N, it features a dual-peak thrust curve optimal for heavy rockets requiring high off-the-pad acceleration.

Technical Specifications

Tripoli Rocketry Association, Inc.
Diameter 38 mm
Length 922 mm
Hardware Single Use
Delays (s) P
Specific Impulse —
Peak Thrust 521.52 N
Peak Time —
T/W Ratio 33.03
Propellant Standard
Profile dual-peak
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
Comparable I-Class Alternatives

I235WC

Gorilla

I
No Curve Data
Total: 324 Ns
Ø 38mm

I200W

AeroTech

I
regressive
Total: 325 Ns
Ø 29mm

I180W

AeroTech

I
dual-peak
Total: 326 Ns
Ø 38mm

I385F

Kosdon

I
No Curve Data
Total: 326 Ns
Ø 29mm

I223GT

Gorilla

I
neutral
Total: 328 Ns
Ø 38mm

I161W

AeroTech

I
dual-peak
Total: 329 Ns
Ø 38mm
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.

ivan@veenie.space
Loading calendar...
ivan@veenie.space