K Class Rocket Motor

AeroTech K1275R

AeroTech
Redline
Ø 54mm
Total Impulse
2224.9Ns
Burn Time
1.75s
Avg Thrust
1275.0N
Max Thrust
1554.0N

Thrust Profile (N)

1.75s Burn Window

Engineered by AeroTech, the K1275R is a 54mm solid rocket motor designed for high-power rocketry (HPR). As an official K-class motor, it delivers a total impulse of 2224.9 Ns over a 1.75 second burn window.

With an average thrust of 1275.0 N and a peak of 1554.0 N, it features a regressive thrust curve optimal for general sport flying. It utilizes the Redline propellant formulation, dictating its specific impulse and exhaust signature.

Technical Specifications

Tripoli Rocketry Association, Inc.
Diameter 54 mm
Length 568 mm
Hardware RMS-54/2560
Delays (s) P
Specific Impulse 185.6 s
Peak Thrust 1557.99 N
Peak Time T+ 0.119s
T/W Ratio 65.44
Propellant Redline
Profile regressive
Type reload
Sparky No

Mass Budget

1986g Total
Casing (Dry)
764.0g
38.5%
Propellant
1222.0g
61.5%
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.

Google Sheets Install in Google Sheets coming soon
Comparable K-Class Alternatives

1176K1720-P

AMW

K
dual-peak
Total: 1176 Ns
Ø 54mm

1281K360-13A

Cesaroni

K
neutral
Total: 1281 Ns
Ø 54mm

K456DM

AeroTech

K
regressive
Total: 1281 Ns
Ø 54mm

835CC125J-K240

Hypertek

K
regressive
Total: 1292 Ns
Ø 54mm

SK-54-1750

AMW

K
neutral
Total: 1300 Ns
Ø 54mm

K400C

AeroTech

K
regressive
Total: 1304 Ns
Ø 54mm
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.

ivan@veenie.space
Loading calendar...
ivan@veenie.space