K Class Rocket Motor

Gorilla K520RT

Gorilla Rocket Motors
Red Twister
Ø 54mm
Total Impulse
1356.0Ns
Burn Time
2.61s
Avg Thrust
520.0N
Max Thrust
593.1N

Thrust Profile (N)

2.61s Burn Window

Engineered by Gorilla Rocket Motors, the K520RT is a 54mm solid rocket motor designed for high-power rocketry (HPR). As an official K-class motor, it delivers a total impulse of 1356.0 Ns over a 2.61 second burn window.

With an average thrust of 520.0 N and a peak of 593.1 N, it features a dual-peak thrust curve optimal for general sport flying. It utilizes the Red Twister propellant formulation, dictating its specific impulse and exhaust signature.

Technical Specifications

Tripoli Rocketry Association, Inc.
Diameter 54 mm
Length 401 mm
Hardware 54/1400
Delays (s) P
Specific Impulse 198 s
Peak Thrust 605.2 N
Peak Time T+ 1.2s
T/W Ratio 36.76
Propellant Red Twister
Profile dual-peak
Type reload
Sparky No

Mass Budget

1442g Total
Casing (Dry)
744.0g
51.6%
Propellant
698.0g
48.4%
Live Sizing
Flight Envelope

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Comparable K-Class Alternatives

1176K1720-P

AMW

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dual-peak
Total: 1176 Ns
Ø 54mm

1281K360-13A

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K456DM

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835CC125J-K240

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SK-54-1750

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neutral
Total: 1300 Ns
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K400C

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K
regressive
Total: 1304 Ns
Ø 54mm
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