# Test 2017-07 #
6 grain 29mm erithritol motor
With a 10.4" liner, 14/64" nozzle throat, buna-n o-rings, simulation says
this reload will be a 43% H-162, 216 Ns, with about a 1.2 sec burn:
29mm 6-grain Erythritol #14 |
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Rating: | 43% H-162 | Max Pressure: | 5.92 MPa (859 psi) |
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Total Impulse: | 216 Ns | Specific Impulse: | 133 s |
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Max Thrust: | 206 N | Volume Loading: | 70% |
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Average Thrust: | 162 N | Fuel Mass: | 165 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=0,1.36,0,206.37&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) |
* Grain 2017-03-01, 26.57g gross, 25.44g net
* Grain 2017-03-02, 26.63g gross, 25.50g net
* Grain 2017-03-03, 26.65g gross, 25.52g net
* Grain 2017-03-04, 26.01g gross, 24.88g net
* Grain 2017-03-05, 26.51g gross, 25.38g net
* Grain 2017-03-06, 26.75g gross, 25.62g net
Total of 152.34g propellant, vs 165g 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. Lit the motor fine, but
it took a long time to come up to pressure...
Flight data logged as ? sn ?, flight ?.