Wing load/area questions.  
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All Forums >> RC Airplanes >> "1/2 A" & "1/8 A" airplanes >> Wing load/area questions. Page: [1]

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Wing load/area questions. - 3/18/2003 10:12:02 AM   
ger87410


 

Posts: 198
Joined: 3/18/2003
From: Las Cruces, ND, USA
Status: offline 		I was given this pattern plane by my father which was given to him by somebody at the flying field, and I know absolutely nothing about it. From what I gathered it has a wing area of about 897.75 Square inches and the fuselage is somewhere around 47" long. It did not come with the wing that was designed for it, but one that fits real nice. Is this the correct wing area to fuselage size? What is the maximum weight for this craft? Any help would be sppreciated.
Gerald
       Post #: 1

Wing load/area questions. - 3/18/2003 11:03:09 AM   
MarkD


 

Posts: 243
Joined: 2/3/2002
From: Cleveland, OH, USA
Status: offline 		What is the wing span? A lot of the modern FAI/pattern planes have a fuselage almost as long as the wingspan, if not a hair longer. The older designs were generaly a bit shorter, something around 75% of the wingspan. If you have a picture to post it would help.

MarkD

(in reply to ger87410)
       Post #: 2

Wing load/area questions. - 3/18/2003 12:25:18 PM   
skylane42


 

Posts: 361
Joined: 4/6/2002
From: Portage, MI, USA
Status: offline 		thats alof of wing area for that fuse. a Sweet Stick has a 55 inch wing span and 600 sq in of area. I don`t know off hand how long the fuse is but it is shorter than the wingspan. Your wing loading is going to be real low so it will be a floater.

(in reply to ger87410)
       Post #: 3

Wing load/area questions. - 3/18/2003 6:56:45 PM   
ger87410


 

Posts: 198
Joined: 3/18/2003
From: Las Cruces, ND, USA
Status: offline 		Here's some quick low quality pictures. The fuse is 46" long, 42.5" not including the stabilizer and elevator fins, and the wing is 63"x14.25". It's definitely a fixer upper. I estimate the completed weight to be 5-7 pounds with the engine and stuff since it weights 4.5 pounds now. I just got it and don't plan on starting on it till after Kim and my wedding. I'm surprised how fast you people reply. If I knew that you people were this helpful, I would have joined sooner. It's in zip format. Everybody should have winzip. So do you think this beast will fly?

Attachments
Click to see the file in new window.Attachment.zip


< Message edited by ger87410 -- Mar 19 2003 9:41PM >

(in reply to ger87410)
       Post #: 4

Wing load/area questions. - 3/21/2003 11:43:15 PM   
buzzard bait


 

Posts: 1018
Joined: 1/1/2003
From: Ithaca, NY, USA
Status: offline 		Main issue is not whether the wing is the right size for the fuse (some planes have no fuse at all), but whether you have enough stability in pitch and yaw, especially pitch. If the fin and rudder look about right they will probably do. But if the stab is very small and close to the wing then you will need a very forward balance point in order to have enough stability in pitch. There is a formula relating wing area, stab area, chord, and tail moment arm to balance point.

Your weight is good for that area.

I can't see the picture and have no idea what winzip is. Jim

(in reply to ger87410)
       Post #: 5

Wing load/area questions. - 3/24/2003 7:21:44 AM   
ger87410


 

Posts: 198
Joined: 3/18/2003
From: Las Cruces, ND, USA
Status: offline 		For people who don't have winzip, goto winzip.com and download the evaluation version.

(in reply to ger87410)
       Post #: 6

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