# Test 2017-06 #
4 grain 29mm sorbitol motor
With a 7.40" liner, 14/64" nozzle throat, buna-n o-rings, simulation says
this reload will be a 99% G-180, 159 Ns, with about an 0.8 sec burn:
29mm 4-grain Sorbitol #14 |
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Rating: | 99% G-180 | Max Pressure: | 6.47 MPa (939 psi) |
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Total Impulse: | 159 Ns | Specific Impulse: | 133 s |
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Max Thrust: | 228 N | Volume Loading: | 69% |
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Average Thrust: | 180 N | Fuel Mass: | 122 g |
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![null](http://chart.apis.google.com/chart?chxt=x,x,y,y,r,r&chs=400x200&cht=lxy&chco=3072F3&chds=0,0.89,0,227.96&chxr=0,0,0.89|2,0,227.96|4,0,51.25&chd=t:0,0,0,0,0,0,0,0,0,0,0.02,0.04,0.07,0.12,0.19,0.29,0.44,0.52,0.65,0.78,0.8,0.88,0.89|0,10.15,19.94,29.95,39.31,47.83,55.66,62.85,69.45,75.47,134.47,149.05,157.98,170.21,186.92,207.36,225.35,227.96,219.77,198.86,37.95,0.12,0.06&chxl=1:|s|3:|N|5:|lbf&chxp=1,50|3,50|5,50) |
* Grain 2017-04-01, 29.3g gross, 28.05g net
* Grain 2017-04-02, 29.1g gross, 27.85g net
* Grain 2017-04-03, 28.9g gross, 27.65g net
* Grain 2017-04-04, 28.5g gross, 27.25g net
Total of 110.8g propellant, vs 122g simulated.
## Results ##
Flown in Robert's Madcow Little John at NCR's Mile High Mayhem on 3 June 2017,
PFND. Used two Twiggy igniters wired in parallel.
Flight data logged as ? sn ?, flight ?.