Skillman Experimental Rocketry

Test #1, 2020-05-19

Ambient Temperature = 64 F

     ~Propellant Properties~
Fuel Mixture: potassium nitrate - sorbitol
Burn Time = 1.55 s
Grain Mass = 300 g
Segment Lengths = 4, 3.95 in
Grain Density = 1.7145 g/cm^3

         ~Performance~
Average mass flow = 0.19355 kg/s
Impulse = 333.4758 N-s
Isp = 113.3508 s
c* = 864.4596 m/s
Avg. CF = 1.2859

         ~Peak Values~
Max Thrust= 387.4311 N
   at t= 0.85978 s
Max Pressure= 626.1997 psi
   at t= 0.86278 s
Max Temeprature= 82.2543 F
   at t= 0.25978 s

           ~Misc.~
Burn start time after DAQ start: 93.85 s
Burn end time after DAQ start: 95.4 s
Note: 3 day dry, otherwise same as
previous 2 burns, casted 5/16