CG calc online

:  RC Plane Poster

Calculation of the center of gravity (CG) of an aircraft model

Root Cord (A): 

Online calculation of the center of gravity of an aircraft model

Tip Cord (B): 

Sweep Distance (S):

Half Span (Y):

CG in % (default 25%):

Sweep Distance at MAC (C) =

Mean Aerodynamic Chord (MAC) =

From Root Chord to MAC (d) =

CG on Root Cord (Cg) =

Equations
C = (S(A+2B)) / (3(A+B))
MAC = A-(2(A-B)(0.5A+B) / (3(A+B)))
d = (2Y(0.5A+B)) / (3(A+B))
CG = %MAC B.P.*(MAC) + C

 


How to check CG

how to check CG on RC airplane

A correctly balancing rc airplane, sitting on your fingertips, will either be level or have the nose pointing slightly downwards. If the tail points downwards then the plane is tail heavy and you need to do something about that.

If the balance does need to be adjusted to get the correct Centre of Gravity, the first thing to do is try moving the battery pack further forward or backward inside the plane. By doing this you are adjusting the balance without adding extra 'dead' weight in the form of ballast.

Obviously you need to move the component in accordance with how the plane hangs: if it's tail heavy then move the component forward and vice versa.

 

Comments (0)

No comments yet. Yours will be the first!

How to make video

how to make RC car transmitter and receiver at home

RC Plane Poster  0  1665
 how to make 27mhz toy car ic

 


Avios PNF BushMule V2 Twin-Motor Sports/STOL Airplane 1500mm

RC Plane Poster  0  1743
The BushMule is back! Stuart goes going over all the changes in V2 in this official flight review! Learn about its history, what`s new with the Avios PNF BushMule V2 Twin-Motor Sports/STOL Airplane...

 


Mini Vampire CRASH

RC Plane Poster  0  1659

 


How to make rc plane with thermocol sheet in home

RC Plane Poster  0  1763
Here in this video I have shown you How you can make thermocol rc plane in home at easy way

 


How to make rc airplane tyre at home

RC Plane Poster  0  1466
Hi everyone today IAM showing you how to make rubber tyres for RC airplane  

 


Delta wing rc plane - Pizza box rc plane

RC Plane Poster  0  2840
This is DIY rc plane

 


How To Make RC Boat Propeller At Home

RC Plane Poster  0  923
 DIY Boat Propeller

 


BEST CINEWHOOP SHOWDOWN - Diatone Taycan VS iFlight Bumblebee

RC Plane Poster  0  1640
3" Cinewhoop showdown