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 a Helicopter

RC Plane Poster  0  1401
Learn - How To Make a Drone at home

 


How To Make a Quadcopter Car !! Flying Drone Car at home

RC Plane Poster  0  1338
Learn - How To Make a Drone Car at home

 


RC PLANE TRAINER DIY

RC Plane Poster  0  1596
Electric Spec

 

 


How To Make Truck At Home

RC Plane Poster  0  1292
How To Make a rc truck

 


how to make rc airplane at home

RC Plane Poster  0  1493

 


Udi RC Firefly U46...Unboxing, Review, and Giveaway Details

RC Plane Poster  0  1486
Welcome to Ready to Run RC

 


RC Gliding - First Slope Soaring Attempt (Hambledon Hill - Dorset) with Crash!

RC Plane Poster  0  1302
I managed to set a plane on fire and nearly burn the house down, but I converted it to a glider and it kind of works! Subtitles: "Right that`s the end of that