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   1 # Test 2017-03 #
   2
   3 3 grain 54mm sorbitol motor burned on the test stand at
   4 a Tripoli Colorado launch in Hartsel on 21 May 2017.
   5
   6 With a 10.250" liner, 8.9mm nozzle throat, buna-n o-rings, simulation says
   7 this is a 25% J-432, 763 Ns, with about a 1.6 sec burn:
   8
   9 <!--Begin motor 54mm 3-grain Sorbitol HTML export from MotorSim-->
  10 <table class='motor' style='text-align: left; border: 1px solid black'><tr><th colspan='6' class='title'>54mm 3-grain Sorbitol</th></tr><tr class='summary'><th>Rating:</th><td>25% J-432</td><th>Max Pressure:</th><td>7.04 MPa (1021 psi)</td></tr><tr class='summary'><th>Total Impulse:</th><td>763 Ns</td><th>Specific Impulse:</th><td>135 s</td></tr><tr class='summary'><th>Max Thrust:</th><td>557 N</td><th>Volume Loading:</th><td>71%</td></tr><tr class='summary'><th>Average Thrust:</th><td>432 N</td><th>Fuel Mass:</th><td>578 g</td></tr><tr><td colspan='4' class='thrust'><img src='http://chart.apis.google.com/chart?chxt=x,x,y,y,r,r&chs=400x200&cht=lxy&chco=3072F3&chds=0,1.77,0,557.22&chxr=0,0,1.77|2,0,557.22|4,0,125.27&chd=t:0,0,0,0,0,0,0.01,0.01,0.01,0.01,0.01,0.03,0.08,0.14,0.23,0.36,0.55,0.82,1.23,1.58,1.72,1.77|0,25.05,49.43,74.06,96.77,117.34,136.23,153.5,169.22,183.49,196.41,334.56,373.53,397.84,430.72,474.56,525.08,557.22,510.06,104.85,0.5,0.14&chxl=1:|s|3:|N|5:|lbf&chxp=1,50|3,50|5,50' width='400' height='200' alt='null' /></td></tr></table>
  11 <!--End motor 54mm 3-grain Sorbitol-->
  12
  13
  14 * Grain 2017-01-01, 176.1g gross, ?g net
  15 * Grain 2017-01-03, 187.6g gross, ?g net
  16 * Grain 2017-01-10, 190.3g gross, ?g net
  17
  18 ## Results ##
  19
  20 Good data collected.  Also a more regressive looking burn than expected.  Still
  21 had slag accumulation, but was much easier to clean up thanks to grease in
  22 the forward closure pressure port.
  23
  24 Flight data logged as TeleFireOne sn 3634, flight 4.