Wing Placement
05-11-2004, 09:30 AM
#1
Senior Member
Thread Starter
Join Date: Feb 2004
Location: San Juan, KS, ANGOLA
Posts: 111
Likes: 0
Received 0 Likes
on
0 Posts
Wing Placement
Where on the fuselage should the wings connect. I was wondering if there was a ratio, or something to do with center of gravity. Sorry for the newb question.
05-11-2004, 01:54 PM
#2
Senior Member
Join Date: Jan 2002
Location: Anchorage,
AK
Posts: 2,565
Likes: 0
Received 0 Likes
on
0 Posts
RE: Wing Placement
If you use the search function here, doing a search for "cg", "mac", "center of gravity", etc., you'll find a lot of past discussions about this. Some are quite technical.
When I plan a new design, the airfoils are one of the first things I select. With a conventional setup, the center of gravity should be placed between 25% and 35% of the MAC. (Mean Aerodynamic Chord) So, you design the rest of the airplane around the intended balance point. The only other option is to move weight around inside the plane after it's built.
When I plan a new design, the airfoils are one of the first things I select. With a conventional setup, the center of gravity should be placed between 25% and 35% of the MAC. (Mean Aerodynamic Chord) So, you design the rest of the airplane around the intended balance point. The only other option is to move weight around inside the plane after it's built.
05-11-2004, 02:17 PM
#3
Banned
Join Date: Jan 2003
Location: gone,
Posts: 4,923
Likes: 0
Received 0 Likes
on
0 Posts
RE: Wing Placement
You have a choice of placing the wings for appearance and moving the CG to fit the wings... or placing the cg on the fuselage and matching the wing location to that.
Remember the little "Sleek Streek" rubber power model? you move the wings wy forward and the thing loops like crazy and crashes because you put the wing forward of the CG. If you put the wing way back... it just plays lawn dart. Put the wings on the CG it flies pretty well.
The average ARF... you place the battery in the tail and use a light engine... loopy-crunchy. Put on an oversize engine and the battery in the cowl... its a ground vehicle with wings. Same result... different method.
Remember the little "Sleek Streek" rubber power model? you move the wings wy forward and the thing loops like crazy and crashes because you put the wing forward of the CG. If you put the wing way back... it just plays lawn dart. Put the wings on the CG it flies pretty well.
The average ARF... you place the battery in the tail and use a light engine... loopy-crunchy. Put on an oversize engine and the battery in the cowl... its a ground vehicle with wings. Same result... different method.
