D Class Rocket Motor

AeroTech D21T

AeroTech
Blue Thunder
Ø 18mm
Total Impulse
19.6Ns
Burn Time
0.94s
Avg Thrust
20.8N
Max Thrust
32.1N

Thrust Profile (N)

0.94s Burn Window

Engineered by AeroTech, the D21T is a 18mm solid rocket motor designed for model rocketry. As an official D-class motor, it delivers a total impulse of 19.6 Ns over a 0.94 second burn window.

With an average thrust of 20.8 N and a peak of 32.1 N, it features a regressive thrust curve optimal for general sport flying. It utilizes the Blue Thunder propellant formulation, dictating its specific impulse and exhaust signature.

Technical Specifications

National Association of Rocketry
Diameter 18 mm
Length 70 mm
Hardware Single Use
Delays (s) 4,7
Specific Impulse 208 s
Peak Thrust 32.12 N
Peak Time T+ 0.029s
T/W Ratio 84.97
Propellant Blue Thunder
Profile regressive
Type SU
Sparky No

Mass Budget

25g Total
Casing (Dry)
15.4g
61.6%
Propellant
9.6g
38.4%
Live Sizing
Flight Envelope

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