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fanCalc - Calculator for Ducted Fans
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Design Fundamentals:
 		          Field Elevation:
 m ASL 		  Air Temp:
 °C 		  Pressure (QNH):
 hPa
Battery: (continuous / max. C) - charge state
    # serial:
S 		  # parallel:
P 		  Capacity:
mAh		   Resistance:
Ohm		   Volt per Cell:
V		   Weight per Cell:
g
Controller:
 		Resistance:
Ohm 		Continuous Current:
A		 max. Current:
A		 Weight:
g		 Motor Weight:
g
Motor: Manufacturer - Type (Kv in rpm)
  		 Kv (w/o torque):
rpV		    Resistance:
Ohm		   no-load Current:
A @ V		   Limit (up to 20s):
   # mag. Poles:
   Case Lenght:
mm
Ducted Fan:
 thrust duct for:
 Flight Speed:
km/h		 Gear:
:1
Approx. Values:   Warning:    
Battery:    Load:
C		    Voltage:
V		    Rated Voltage:
V		 Flight Time*:
min		 mixed Flight Time:
min		 Weight:
g
Motor: max. Current:
A		 Voltage:
V		 Revolutions:
rpm		    el. Power (In):
W		    mech. Power (out):
W		    Efficiency:
%
Optimal Efficiency: Strom:
A		 Voltage:
V		 Revolutions:
rpm		 el. Power (In):
W		 mech. Power (out):
W		 Efficiency:
%
Ducted Fan: Static Thrust:
g  =
oz
N		 Thrust in Flight:
g
oz		 max. Jet Efflux:
km/h   =
mph =
m/s
ft/s		 Revolutions:
rpm
Entire Drive:   Weight:
g   (Battery + Controller + Motor + 10%)		    Fan Efficiency:
g/W =		    
oz/W		   Efficiency:
%
Motor Data: Motor Cooling:
 Power Scale:
0
1
2
3
4
5
6
7
8
9
0
20
40
60
80
100
el. Power [in 1W]
Efficiency [%]
max. Revolutions [in 100rpm]
wast Power [W]
Motor Case Temp. [°C]
Motor Case Temp. overlimit [°C]
(c) by s4a    V1.07

Ampere

Important Note:
Before flight recheck the max. current! If your Current, el. Power or RPM are over the manufacturers limits your 
motor, controller and/or battery may take damage! Thrust reduction due long ducting are not considered!

 for printing use Landscape format
* Flight Time @ Full Power
** Testdata with reduced accuracy

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Copyright (C) by Markus Müller, http://www.s4a.ch    email: ecalc[at]s4a.ch All rights reserved.
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V F5.16 08.05.12 / Data: 10.06.12 with 2596 Motors
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