K Class Rocket Motor

Contrail K555-BG

Contrail Rockets
Unknown
Ø 54mm
Total Impulse
1686.5Ns
Burn Time
3.04s
Avg Thrust
554.5N
Max Thrust
1200.0N

Thrust Profile (N)

3.04s Burn Window

Engineered by Contrail Rockets, the K555-BG is a 54mm solid rocket motor designed for high-power rocketry (HPR). As an official K-class motor, it delivers a total impulse of 1686.5 Ns over a 3.04 second burn window.

With an average thrust of 554.5 N and a peak of 1200.0 N, it features a neutral thrust curve optimal for heavy rockets requiring high off-the-pad acceleration.

Technical Specifications

Tripoli Rocketry Association, Inc.
Diameter 54 mm
Length 1220 mm
Hardware Single Use
Delays (s) P
Specific Impulse 382 s
Peak Thrust 1385.79 N
Peak Time T+ 0.559s
T/W Ratio 27.73
Propellant Standard
Profile neutral
Type hybrid
Sparky No

Mass Budget

2037.9999999999998g Total
Casing (Dry)
1588.0g
77.9%
Propellant
450.0g
22.1%
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.

Google Sheets Install in Google Sheets coming soon
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.

Loading calendar...