D Class Rocket Motor

Estes D11

Estes Industries
black powder
Ø 24mm
Total Impulse
17.5Ns
Burn Time
1.86s
Avg Thrust
9.4N
Max Thrust
26.0N

Thrust Profile (N)

1.86s Burn Window

Engineered by Estes Industries, the D11 is a 24mm solid rocket motor designed for model rocketry. As an official D-class motor, it delivers a total impulse of 17.5 Ns over a 1.86 second burn window.

With an average thrust of 9.4 N and a peak of 26.0 N, it features a neutral thrust curve optimal for heavy rockets requiring high off-the-pad acceleration. It utilizes the black powder propellant formulation, dictating its specific impulse and exhaust signature.

Technical Specifications

National Association of Rocketry
Diameter 24 mm
Length 70 mm
Hardware Single Use
Delays (s) P
Specific Impulse 72.8 s
Peak Thrust 26.01 N
Peak Time T+ 0.289s
T/W Ratio 21.39
Propellant black powder
Profile neutral
Type SU
Sparky No

Mass Budget

44.8g Total
Casing (Dry)
20.3g
45.3%
Propellant
24.5g
54.7%
Live Sizing
Flight Envelope

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