J Class Rocket Motor

Loki J474-CT

Loki Research
Cocktail
Ø 38mm
Total Impulse
709.1Ns
Burn Time
1.49s
Avg Thrust
474.0N
Max Thrust
1243.1N

Thrust Profile (N)

1.49s Burn Window

Engineered by Loki Research, the J474-CT is a 38mm solid rocket motor designed for high-power rocketry (HPR). As an official J-class motor, it delivers a total impulse of 709.1 Ns over a 1.49 second burn window.

With an average thrust of 474.0 N and a peak of 1243.1 N, it features a regressive thrust curve optimal for heavy rockets requiring high off-the-pad acceleration. It utilizes the Cocktail propellant formulation, dictating its specific impulse and exhaust signature.

Technical Specifications

Tripoli Rocketry Association, Inc.
Diameter 38 mm
Length 416.9 mm
Hardware 38/740
Delays (s) 18
Specific Impulse 200.8 s
Peak Thrust 1222.57 N
Peak Time T+ 0.054s
T/W Ratio 63.95
Propellant Cocktail
Profile regressive
Type reload
Sparky No

Mass Budget

755.6g Total
Casing (Dry)
395.6g
52.4%
Propellant
360.0g
47.6%
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...