Total Impulse
1340.6Ns
Burn Time
2.20s
Avg Thrust
609.4N
Max Thrust
973.0N
Thrust Profile (N)
2.20s Burn WindowEngineered 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 TotalCasing (Dry)
3035.0g
85.5%
Propellant
515.0g
14.5%
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.
Comparable K-Class Alternatives
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.