Bonjour
Je relance, message apparament disparu
alain
----- Original Message -----
From: "Alain Depraetere" <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Tuesday, November 27, 2007 6:39 AM
Subject: Motorisation du Shadow Fuselage eletrique (Airtech)
Bonjour
Connaissez vous le planeur Shadow fuselage electrique ?
J'envisage une motorisation telle que decrite dans le fichier joint,
merci de votre opinion.
Alain
Comparison - Shadow, Shadow Fuselage electrique Airtech
20m above Sea Level, 101,3kPa, 14,9°C
Shadow Fuselage electrique Airtech
Motor FEIGAO B50-11S + 6,7:1
Motor Constant (rpm/V) 3226
No Load Current (A) 2,2
Armature Resistance (Ohms) 0,0114
Battery Xpower 3400 3S2P
Series Cell Count 3
Parallel Cell Count 2
Cell Capacity (mAh) 1700
Pack Capacity (mAh) 3400
Cell Voltage (V) 3,7
Pack Voltage (V) 11,1
Cell Resistance (Ohms) 0,011
Pack Resistance (Ohms) 0,0165
Speed Control (ESC) CONTROLEUR XPower XREG60
Resistance (Ohms) 0,0012
Maximum Current (A) 60
Number of ESCs 1
Drive System 6.7/1
Gear Ratio 6,70:1
Propeller (in x in) 16x10
Series Motors 1
Parallel Motors 1
Number of Propellers 1
Blades per Propeller 2
Airframe Shadow
Wing Span (cm) 365
Wing Area (dm²) 73
Total Weight (g) 2473
Static Predictions
Current (A) 37,2
Motor Voltage (V) 10,4
Input Power (W) 388,0
Input Power Loading (W/kg) 156,8
Power Loss (W) 56,1
Motor/Gearbox Output (W) 332,0
Output Power Loading (W/kg) 134,1
Motor/Gearbox Efficiency (%) 85,6
Shaft Efficiency (%) 80,5
Motor RPM 32245
Propeller RPM 4813
Static Thrust (g) 2378
Pitch Speed (m/s) 20,4
Run Time (min:sec) 5:29
Flight Predictions
Stall Speed (m/s) 7,6
Optimal Flight Speed (m/s) 9
Throttle for Optimal (%) 53
Duration at Optimal (m:s) 55:00
Motor Temp at Optimal (°C) 21
Hands-off Speed (m/s) 14,3
Throttle for Hands-off (%) 82
Duration Hands-off (m:s) 21:15
Motor Temp Hands-off (°C) 25
Best Rate of Climb (m/s) 6,10
Rate of Sink (m/s) -0,71
Note: Motor performance calculations take ambient temperature and heating
effects into account.
Generated by MotoCalc 8.03, 27/11/2007 06:33.
