
Data EvaluationThe videos are here! See the firing or the gauge. There are pictures on the update page of the larger motor. More pictures are available. After returning home, video of the pressure gage was examined With the following results. (1) In the first second, the pressure gage values went from 080 PSI. There was absolutely no overshoot on this value indicating a nice smooth start of the motor. (2) The pressure stayed at 80 PSI for the next 10.5 seconds. The constant thrust was not unexpected. A paint ball regulator in the second bulkhead was set to regulate at 600 PSI. The motor was designed for a working pressure of 400 PSI giving a differential of 200 PSI to force the H_{2}0_{2} and kerosene into the combustion chamber.The thrust developed by the motor is then Where F = thrust of rocket Then Because the rocket was thrusting upward lifting the rocket, the weight of the rocket must be taken into account. I have used an average value weight Adding this to the thrust value on the piston gives the total thrust per second The total thrust is the burn time x thrust/second In metric units, this is equivalent to 6630 Newtons or a mid size M Motor. The total weight of the H_{2}0_{2}/ kerosene was 9.5 lbs. However, because of poor welds in the H_{2}0_{2} tank (patched with JB Weld and shim stock) , I am estimating a 1/4 Ib loss of H_{2}0_{2}. The specific impulse is then 