How to find it.
|Tim Mackey||18/07/2009 23:23:56|
20920 forum posts
Courtesy of Eric Bray our resident wing expert, heres how to calculate the correct balance point of your biplane.
As the sweep on the top wing, and the straight bottom wing more or less cancel out for chordal area, just follow the multiply described procedure -
Find the root chord of the top wing, and mark one third back.
Find the tip chord of the top wing, and mark one third back - on both sides.
Put a straight-edge across the two one third marks on the tips, and mark where it crosses the ROOT chord.
Then divide the space between the two marks into thirds, and assume the start position is going to be near the first third back mark.
so if it works, you have a mark on the root chord rather like
and end up with
Edited By Timbo - Moderator on 18/07/2009 23:24:24
330 forum posts
|I understood that, thanks Timbo/Eric please make it a sticky|
|Eric Bray||20/07/2009 11:55:16|
6600 forum posts
resident wing expert
|Tim Mackey||20/07/2009 15:29:17|
20920 forum posts
|Dont be bashful Mr Bray|
|robin andy||05/03/2012 11:48:27|
|9 forum posts|
Beutifle information and suggestion for people suggested by you guys.
Thanks all for same, actually i am in newbie in this fourum. could anybody help me?
|Biggles' Elder Brother - Moderator||13/05/2012 20:02:37|
15748 forum posts
Hi RA - help with what exactly - CoG for bipes?
Well the above is one approach. Also for a discussion on it see last month's copy of the mag. Finally there are a few threads on here dealing with this - try the search box at the top of the thread.
|Chuck Plains||21/01/2014 18:41:58|
1096 forum posts
Wasn't this covered in the Magazine last year? Still, useful to have something as a sticky on the forum though.
9194 forum posts
I found this very useful. Easy to use and it works it out for you, in theory only
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