# Test 9 #
Identical to [Test 6](test6.html), using the formula from [Test 5](test5.html).
These grains were cast on 29 August 2015.
## Results ##
* Grain 1, 57.04g gross, ?g net
* Grain 2, 52.88g gross, ?g net
* Grain 3, 54.14g gross, ?g net
* Grain 4, 53.97g gross, ?g net
## Observations ##
Motor 434g pre-flight, 220g post-flight.
Fat-Boy igniter.
Rocket post-flight mass was 984g. Nozzle throat was 0.334 post-flight.