J Class Rocket Motor

Loki J820-LW

Loki Research
Loki White
Ø 54mm
Total Impulse
1108.0Ns
Burn Time
1.30s
Avg Thrust
840.0N
Max Thrust
1281.0N

Thrust Profile (N)

1.30s Burn Window

Engineered by Loki Research, the J820-LW is a 54mm solid rocket motor designed for high-power rocketry (HPR). As an official J-class motor, it delivers a total impulse of 1108.0 Ns over a 1.30 second burn window.

With an average thrust of 840.0 N and a peak of 1281.0 N, it features a dual-peak thrust curve optimal for general sport flying. It utilizes the Loki White propellant formulation, dictating its specific impulse and exhaust signature.

Technical Specifications

Tripoli Rocketry Association, Inc.
Diameter 54 mm
Length 330 mm
Hardware 54/1200
Delays (s) P
Specific Impulse 175.7 s
Peak Thrust 1033.1 N
Peak Time T+ 0.07s
T/W Ratio 70.77
Propellant Loki White
Profile dual-peak
Type reload
Sparky No

Mass Budget

1210g Total
Casing (Dry)
567.0g
46.9%
Propellant
643.0g
53.1%
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 J-Class Alternatives

J245-BG

Contrail

J
regressive
Total: 644 Ns
Ø 54mm

440CC076J-J115

Hypertek

J
regressive
Total: 674 Ns
Ø 54mm

J355-BG

Contrail

J
dual-peak
Total: 679 Ns
Ø 54mm

683J250-15A

Cesaroni

J
dual-peak
Total: 683 Ns
Ø 54mm

699J145-19A

Cesaroni

J
regressive
Total: 699 Ns
Ø 54mm

J250W

AeroTech

J
dual-peak
Total: 704 Ns
Ø 54mm
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