3 6 grain 29mm erithritol motor
5 With a 10.4" liner, 14/64" nozzle throat, buna-n o-rings, simulation says
6 this reload will be a 43% H-162, 216 Ns, with about a 1.2 sec burn:
9 <!--Begin motor 29mm 6-grain Erythritol #14 HTML export from MotorSim-->
10 <table class='motor' style='text-align: left; border: 1px solid black'><tr><th colspan='6' class='title'>29mm 6-grain Erythritol #14</th></tr><tr class='summary'><th>Rating:</th><td>43% H-162</td><th>Max Pressure:</th><td>5.92 MPa (859 psi)</td></tr><tr class='summary'><th>Total Impulse:</th><td>216 Ns</td><th>Specific Impulse:</th><td>133 s</td></tr><tr class='summary'><th>Max Thrust:</th><td>206 N</td><th>Volume Loading:</th><td>70%</td></tr><tr class='summary'><th>Average Thrust:</th><td>162 N</td><th>Fuel Mass:</th><td>165 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=0,1.36,0,206.37&chxr=0,0,1.36|2,0,206.37|4,0,46.39&chd=t:0,0,0.03,0.07,0.11,0.17,0.25,0.36,0.52,0.69,0.73,1.05,1.2,1.21,1.21,1.21,1.21,1.21,1.21,1.21,1.21,1.27,1.36|0,11.17,113.77,132.54,140.92,151.05,164.61,181.51,198.8,206.37,206.02,177.47,152.17,142.48,132.97,123.64,114.51,105.58,96.88,88.42,80.21,1.09,0&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 29mm 6-grain Erythritol #14-->
14 * Grain 2017-03-01, 26.57g gross, 25.44g net
15 * Grain 2017-03-02, 26.63g gross, 25.50g net
16 * Grain 2017-03-03, 26.65g gross, 25.52g net
17 * Grain 2017-03-04, 26.01g gross, 24.88g net
18 * Grain 2017-03-05, 26.51g gross, 25.38g net
19 * Grain 2017-03-06, 26.75g gross, 25.62g net
21 Total of 152.34g propellant, vs 165g simulated.
25 Flown in Robert's Madcow Little John at NCR's Mile High Mayhem on 3 June 2017,
26 PFND. Used two Twiggy igniters wired in parallel. Lit the motor fine, but
27 it took a long time to come up to pressure...
29 Flight data logged as ? sn ?, flight ?.
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