User Manual
www.skyrc.com- 15 -
THRUST CALCULATOR
THRUST CALC.
Diameter: 010.00
CF: 1.00
Blades: 2
RPM: 11000
Thrust: 1.553Kg
 3.424Lb
THRUST CALCULATOR
The thrust calculator can estimate the thrust of an airplane, there are 
many variances and some known factors.
Lets assume we have an airplane and this is its first flight. We know the 
size of the propeller and we can do a static full throttle rpm check with a 
tachometer on the ground. We can now add these known figures into 
Thrust Calculator. By the fact that you can verify thrust it becomes 
possible, to estimate the general power of the airplane in advance. 
This will give you more knowledge about your plane and the power 
characteristics to make your first flight less challenging and safe, after 
all you may have other flight characteristics to deal with. This should 
help you to estimate flight take off distances, recovery from a stall. For 
more experienced pilots this will enable them to calculate if the plane is 
going to be able to hover. It can show you what changes to the power 
calculation will be affected by a different size propeller.
CF (Propeller's Effectiveness Coefficient Table)
Propeller Length (inch)
Propeller Revolution 
RPM (Revolutions 
Per Minute)
Number of Blades
propeller's Effectiveness 
Coefficient
Manufacturer
CF
Standard propeller
APC propeller
APC SF
APC W propeller
MenzS propeller
Bambula propeller
Bolly clubman
Cox
GWS HD
GWS RS (SF)
Smart
Zinger Wood
1.00
1.06
1.50
1.09
1.03
1.02
1.04
1.10
1.10
1.02
1.00
0.75










