8" diameter finocyl test data

Grain details:

8 inch OD case bonded grain in fiberglass case
Grain length 10"
Ends inhibited
Finocyls as follows: 2x 1/2 circles, 2x 3/4" x 1/4" rectangles. Plus additional small regions from failed tests.
1.2 inch nozzle throat with 4x expansion ratio

Pressure data

Force data:

Measurements

Max pressure; 140.5 +- 3 PSI
Average pressure 71 +- 2 PSI
Max Force 95.8lb +- 3 lb
Average Force 71lb +- 2 lb

On cleaning up the motor it was apparent that there was blow by/case failure in two places resulting in a lower then predicted pressure.

Comments

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