I Class Rocket Motor

Contrail I333-PVC

Contrail Rockets
Unknown
Ø 38mm
Total Impulse
556.0Ns
Burn Time
1.70s
Avg Thrust
329.0N
Max Thrust
853.0N

Thrust Profile (N)

1.70s Burn Window

Engineered by Contrail Rockets, the I333-PVC is a 38mm solid rocket motor designed for high-power rocketry (HPR). As an official I-class motor, it delivers a total impulse of 556.0 Ns over a 1.70 second burn window.

With an average thrust of 329.0 N and a peak of 853.0 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 992 mm
Hardware Single Use
Delays (s) P
Specific Impulse 308 s
Peak Thrust 881.09 N
Peak Time T+ 0.029s
T/W Ratio 36.1
Propellant Standard
Profile dual-peak
Type hybrid
Sparky No

Mass Budget

929g Total
Casing (Dry)
745.0g
80.2%
Propellant
184.0g
19.8%
Live Sizing
Flight Envelope

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Comparable I-Class Alternatives

I235WC

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No Curve Data
Total: 324 Ns
Ø 38mm

I200W

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regressive
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I180W

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dual-peak
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I385F

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No Curve Data
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I223GT

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neutral
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Ø 38mm

I161W

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dual-peak
Total: 329 Ns
Ø 38mm
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