|May 27, 2001, 08:04 PM|
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.
|May 28, 2001, 12:58 PM|
Santa Fe , N.M., U.S.A
Joined May 2001
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
|May 29, 2001, 01:48 AM|
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
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