J Class Rocket Motor

Loki J300LR

Loki Research
Loki Red
Ø 54mm
Total Impulse
1208.0Ns
Burn Time
4.10s
Avg Thrust
297.0N
Max Thrust
401.0N

Thrust Profile (N)

4.10s Burn Window

Engineered by Loki Research, the J300LR is a 54mm solid rocket motor designed for high-power rocketry (HPR). As an official J-class motor, it delivers a total impulse of 1208.0 Ns over a 4.10 second burn window.

With an average thrust of 297.0 N and a peak of 401.0 N, it features a dual-peak thrust curve optimal for sustainer stages and high-altitude attempts. It utilizes the Loki Red propellant formulation, dictating its specific impulse and exhaust signature.

Technical Specifications

Tripoli Rocketry Association, Inc.
Diameter 54 mm
Length 327 mm
Hardware 54/1200
Delays (s) P
Specific Impulse 198.6 s
Peak Thrust 403.15 N
Peak Time T+ 0.111s
T/W Ratio 23.02
Propellant Loki Red
Profile dual-peak
Type reload
Sparky No

Mass Budget

1315g Total
Casing (Dry)
695.0g
52.9%
Propellant
620.0g
47.1%
Live Sizing
Flight Envelope

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