K Class Rocket Motor

Contrail K630-SP

Contrail Rockets
Unknown
Ø 75mm
Total Impulse
1340.6Ns
Burn Time
2.20s
Avg Thrust
609.4N
Max Thrust
973.0N

Thrust Profile (N)

2.20s Burn Window

Engineered by Contrail Rockets, the K630-SP is a 75mm solid rocket motor designed for high-power rocketry (HPR). As an official K-class motor, it delivers a total impulse of 1340.6 Ns over a 2.20 second burn window.

With an average thrust of 609.4 N and a peak of 973.0 N, it features a neutral thrust curve optimal for general sport flying.

Technical Specifications

Tripoli Rocketry Association, Inc.
Diameter 75 mm
Length 813 mm
Hardware 75 32 M SP (1400CC)
Delays (s) P
Specific Impulse 265.4 s
Peak Thrust 889.64 N
Peak Time T+ 0.501s
T/W Ratio 17.5
Propellant Standard
Profile neutral
Type hybrid
Sparky No

Mass Budget

3550g Total
Casing (Dry)
3035.0g
85.5%
Propellant
515.0g
14.5%
Live Sizing
Flight Envelope

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