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Old 10-26-2002 | 04:40 AM
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Culverson
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From: Jasper, AL
Default Using "Motocalc"
Motor: Graupner Speed 400 7.2V #1794; 2227rpm/V; 0.357 Ohms; 0.72A idle.
Battery: Sanyo 500AR; 10 cells; 500mAh @ 1.2V; 0.009 Ohms/cell.
Speed Control: Generic High Rate ESC; 0.003 Ohms; High rate.
Drive System: Graupner Speed 400 2.33:1 Gearbox; 7x3 (Pconst=1.31; Tconst=0.95) geared 2.33:1.
Airframe: mustang 400; 231sq.in; 30oz; 18.7oz/sq.ft; Cd=0.053; Cl=0.47; Clopt=0.72; Clmax=1.24.
Filter: 15A max.
Stats: 24 W/lb in; 17 W/lb out; 20mph stall; 26mph opt @ 101% (7:37); 33mph level @ 101% (7:37); -224ft/min @ -5.5°; -224ft/min @ -5.5°.
Seems a useful tool in calculations of motor-prop-battery-etc. I have to spend some time to find out how varying changes will effect flight times and prevent stalling. Nice tool Software..I just wish it was updated more on ESC's than using Generics.
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