H Class Rocket Motor

Loki H90-LR

Loki Research
Loki Red
Ø 38mm
Total Impulse
234.4Ns
Burn Time
2.56s
Avg Thrust
89.3N
Max Thrust
157.6N

Thrust Profile (N)

2.56s Burn Window

Engineered by Loki Research, the H90-LR is a 38mm solid rocket motor designed for high-power rocketry (HPR). As an official H-class motor, it delivers a total impulse of 234.4 Ns over a 2.56 second burn window.

With an average thrust of 89.3 N and a peak of 157.6 N, it features a neutral thrust curve optimal for general sport flying. It utilizes the Loki Red propellant formulation, dictating its specific impulse and exhaust signature.

Technical Specifications

Tripoli Rocketry Association, Inc.
Diameter 38 mm
Length 117 mm
Hardware 38/240
Delays (s) 5,8,10,14
Specific Impulse 199.1 s
Peak Thrust 146.55 N
Peak Time T+ 0.054s
T/W Ratio 27.17
Propellant Loki Red
Profile neutral
Type reload
Sparky No

Mass Budget

335g Total
Casing (Dry)
215.0g
64.2%
Propellant
120.0g
35.8%
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 H-Class Alternatives

H155F

Kosdon

H
dual-peak
Total: 161 Ns
Ø 29mm

H300-HP

Contrail

H
neutral
Total: 161 Ns
Ø 38mm

H222-HP

Contrail

H
regressive
Total: 161 Ns
Ø 38mm

H55W

AeroTech

H
regressive
Total: 162 Ns
Ø 29mm

163H133-14A

Cesaroni

H
dual-peak
Total: 163 Ns
Ø 29mm

164H90-12A

Cesaroni

H
dual-peak
Total: 164 Ns
Ø 29mm
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