I Class Rocket Motor

Contrail I400-HP

Contrail Rockets
Unknown
Ø 38mm
Total Impulse
432.0Ns
Burn Time
1.00s
Avg Thrust
398.0N
Max Thrust
1006.0N

Thrust Profile (N)

1.00s Burn Window

Engineered by Contrail Rockets, the I400-HP is a 38mm solid rocket motor designed for high-power rocketry (HPR). As an official I-class motor, it delivers a total impulse of 432.0 Ns over a 1.00 second burn window.

With an average thrust of 398.0 N and a peak of 1006.0 N, it features a dual-peak thrust curve optimal for heavy rockets requiring high off-the-pad acceleration.

Technical Specifications

Tripoli Rocketry Association, Inc.
Diameter 38 mm
Length 922 mm
Hardware 38 36 XF HP (460CC)
Delays (s) P
Specific Impulse 265.3 s
Peak Thrust 898.2 N
Peak Time T+ 0.078s
T/W Ratio 43.86
Propellant Standard
Profile dual-peak
Type hybrid
Sparky No

Mass Budget

925g Total
Casing (Dry)
759.0g
82.1%
Propellant
166.0g
17.9%
Live Sizing
Flight Envelope

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Comparable I-Class Alternatives

I235WC

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I180W

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I385F

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I223GT

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I161W

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