B Class Rocket Motor

SCR SCR-B6

Southern Cross Rocketry
black powder
Ø 18mm
Total Impulse
4.8Ns
Burn Time
1.26s
Avg Thrust
3.8N
Max Thrust
13.0N

Thrust Profile (N)

1.26s Burn Window

Engineered by Southern Cross Rocketry, the SCR-B6 is a 18mm solid rocket motor designed for model rocketry. As an official B-class motor, it delivers a total impulse of 4.8 Ns over a 1.26 second burn window.

With an average thrust of 3.8 N and a peak of 13.0 N, it features a regressive 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

Austrialian Model Rocket Society Inc.
Diameter 18 mm
Length 70 mm
Hardware Single Use
Delays (s) P
Specific Impulse 82.2 s
Peak Thrust 12.2 N
Peak Time T+ 0.354s
T/W Ratio 20.55
Propellant black powder
Profile regressive
Type SU
Sparky No

Mass Budget

19g Total
Casing (Dry)
13.0g
68.4%
Propellant
6.0g
31.6%
Live Sizing
Flight Envelope

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Comparable B-Class Alternatives

B4-4

Quest

B
neutral
Total: 4 Ns
Ø 18mm

B6

Estes

B
neutral
Total: 4 Ns
Ø 18mm

B6

Quest

B
regressive
Total: 5 Ns
Ø 18mm

B2

Apogee

B
regressive
Total: 5 Ns
Ø 10.5mm

B4

Quest

B
dual-peak
Total: 5 Ns
Ø 18mm

B6W

Quest

B
neutral
Total: 5 Ns
Ø 18mm
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