K Class Rocket Motor

Contrail K456-BG

Contrail Rockets
Unknown
Ø 75mm
Total Impulse
1628.0Ns
Burn Time
3.70s
Avg Thrust
439.0N
Max Thrust
1422.0N

Thrust Profile (N)

3.70s Burn Window

Engineered by Contrail Rockets, the K456-BG is a 75mm solid rocket motor designed for high-power rocketry (HPR). As an official K-class motor, it delivers a total impulse of 1628.0 Ns over a 3.70 second burn window.

With an average thrust of 439.0 N and a peak of 1422.0 N, it features a neutral thrust curve optimal for heavy rockets requiring high off-the-pad acceleration.

Technical Specifications

Tripoli Rocketry Association, Inc.
Diameter 75 mm
Length 813 mm
Hardware 75 32 S BG (1400CC)
Delays (s) P
Specific Impulse 286.1 s
Peak Thrust 896.54 N
Peak Time T+ 0.213s
T/W Ratio 12.08
Propellant Standard
Profile neutral
Type hybrid
Sparky No

Mass Budget

3704g Total
Casing (Dry)
3124.0g
84.3%
Propellant
580.0g
15.7%
Live Sizing
Flight Envelope

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