ESDU 78009
A framework relating the drag-rise characteristics of a finite wing/body combination to the those of its basic aerofoil.

Abstract:
ESDU 78009 derives, from simple sweep laws and the concept of the equivalence of two- and three-dimensional flows, a framework in the form of equations relating lift, freestream Mach number, and the growth of wdave drag for the wing to those same quantities for the aerofoil basic to the wing. There is no universal geometric relationship that will ensure that the wing reproduces the aerodynamic characteristics of its basic aerofoil and so values of some of the terms involved in the framework have to be determined by its user, but guidance on appropriate choices is given. There are three uses for the framework: to reconcile the known drag-rise characteristics of a wing with those of its basic aerofoil, to estimate the performance of an improved wing design, and to provide a performance target for a new wing. A worked example illustrates the use of the method.

See also:

Details:

Data Item 78009
ISBN: 978 0 85679 269 4
DOI: 10.1912/ESDU78009
Keywords:
Show keywords

 

 
You are viewing a mirror of the ESDU web site.

Click here to connect to the complete ESDU site with full search and index facilities.

If you are an ESDU subscriber please login below
Already an ESDU subscriber?
Log in below.

Subscriber log in:
User name

Password

Other options:
This web site is copyright © 1999-2008 ESDU International, 27 Corsham St., London N1 6UA, UK. ESDU International is a member of the IHS Group of companies.