HobbyKing.com New Products Flash Sale
Reply
Thread Tools
Old May 27, 2001, 07:04 PM
Registered User
chlee's Avatar
Atlanta, GA
Joined May 2000
602 Posts
Well, e-flyer,

Lift force varies when you are climbing or diving. However, for level flight, the net vertical force is zero, so lift is simply equal to the weight of the plane.

What exactly is your task? Are you just curious, or do you have a specific project for which you need a figure (say, estimating max lift to see if you can carry a payload)?

You can get a very rough idea of the lift at some angle of attack if your wing has an airfoil with published polars.

Check out this *kick butt* site: http://soaring.cnde.iastate.edu/calcs/frames.shtml

EDIT: Website no longer exists!

It allows you to enter in wing area, span, model weight, and a bunch of airfoils, and you can compare Lift coefficients and Drag Coefficients, etc.

G'luck.
-Lee
chlee is offline Find More Posts by chlee
Last edited by chlee; Aug 16, 2007 at 12:07 PM. Reason: cited website no longer exists
Reply With Quote
Sign up now
to remove ads between posts
Old May 28, 2001, 12:57 AM
Stuck in my wizard suit
e-flyer's Avatar
Deale,MD,USA
Joined Apr 2001
155 Posts
How do you find how many OZ. of lift your wing gets?

Is there a formula?

Thanks!
Alex
e-flyer is offline Find More Posts by e-flyer
Reply With Quote
Old May 28, 2001, 11:58 AM
Registered User
Santa Fe , N.M., U.S.A
Joined May 2001
37 Posts
HAY E-FLYER THERE ARE ALOT OF PEOPLE WHO THINK THAT THEY HAVE SOME FOGGY CLUE! THIS IS ONE AREA OF OUR HOBBY THAT YOU WANT TO BE CAREFULL OF WHO YOU ASK. GAT YOUR SELF A BOOK CALLED R/C MODEL AIRCRAFT DESIGN.IT IS WRITTEN BY ANDY LENNON,IT IS RELITIVLY POINTED AT THE LAYMAN. OR READ ALISTAIR SUTHERLANDS ARTICLES IN R/C MODEL WORLD, HIS E-MAIL ADDRESS IS Alasdair_S@compuserve.com .HE IS A GREAT GUY AND HE KNOWS WHAT HE IS TALKING ABOUT. UNLIKE SOMEONE WHO THINKS A PLANE IS EVER NEUTRAL WITH ITS WEIGHT. SERIOUSLY EDUCATE YOURSELF, BUT BE CAREFULL!!! WO
WoFlyer is offline Find More Posts by WoFlyer
Reply With Quote
Old May 29, 2001, 12:48 AM
Ascended Master
Sparky Paul's Avatar
Palmdale, CA
Joined Oct 2000
13,387 Posts
Wo, "gat" yourself a spell checker.. and find the lower case key on the keyboard.
And then read the messages for content.
With a plane in unaccelerated level flight,
the lift equals the weight.
The -net- vertical force is zero.
.
Sparky Paul http://www.angelfire.com/indie/aerostuff
PJB's Seriously Aeronautical Stuff http://www.networkone.net/~pjburke/index.html
Sparky Paul is online now Find More Posts by Sparky Paul
Reply With Quote
Reply


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
How do you find your own posts? direwolf Site Chat 8 May 22, 2007 01:51 PM
Wing Warrior Flyers: How do you set up your motors? waltj2k Flying Wings 7 Mar 06, 2005 06:14 PM
How do you know how many amps your NiMH can draw? jacobn Batteries and Chargers 3 Feb 18, 2005 11:31 AM
What do you use as a weighted bar for your wing core cutter ? NetForce2K Foamies (Kits) 1 Jul 26, 2002 07:27 PM
How do you respond to by-standers wanting to buy your plane while you are flying? john mcm Parkflyers 17 May 04, 2001 12:15 AM