Skillman Experimental Rocketry

Test 1, 2020-05-18-1

Ambient Temperature = 68 F

     ~Propellant Properties~
Fuel Mixture: potassium nitrate - sorbitol
Burn Time = 1.55 s
Grain Mass = 308 g
Segment Lengths = 4.03, 3.96 in
Grain Density = 1.6999 g/cm^3

         ~Performance~
Average mass flow = 0.19871 kg/s
Impulse = 333.5445 N-s
Isp = 110.4294 s
c* = 1016.8437 m/s
Avg. CF = 1.065

         ~Peak Values~
Max Thrust= 359.8099 N
   at t= 0.81681 s
Max Pressure= 738.3212 psi
   at t= 0.69381 s
Max Temeprature= 89.63 F
   at t= 0.0018129 s

           ~Misc.~
Burn start time after DAQ start: 89.6 s
Burn end time after DAQ start: 91.15 s
Note: green grain, no rtv, hard to put grains in.