ESDU 83040
Method for the rapid estimation of spanwise loading of wings with camber and twist in subsonic attached flow.
Abstract:
ESDU 83040 gives a simple and rapid means of estimating the spanwise loading of a wide range of cambered and twisted wing planforms for unseparated subcritical flow. It is based on liftingsurface theory and extends, to take account of camber and twist, the basic method of ESDU TD Memo 6403 for spanwise loading due to incidence of uncambered and untwisted wings. The effect of camber is treated by considering it as imparting an equivalent incremental twist to the wing. A simple artifice is used to represent the twist distribution by a combination of linear segments. From the linear representation effective values of local twist are devised for use in the method. Spanwise loadings can be estimated either at a given incidence or a given wing lift coefficient. The method is applicable to wing planforms for which the reduced aspect ratio (β A) is in the range 1.5 to 12 and the sweep parameter (Atan Λ_{½}) is in the range 0 to 6. The wings can have any taper ratio (γ) between 0 to 1 with straight, cranked or curved leading edges, and straight or cranked trailing edges. The method is illustrated by three worked examples.
A computer program, ESDUpac A9510, described in ESDU 95010, is available that calculates the spanwise loadings directly from steady liftingsurface theory using the MulthoppRichardson solution.
Indexed under:
Details:
Data Item ESDU 83040  

Format: 

Status: 

Previous Releases:  
ISBN: 

The Data Item document you have requested is available only to subscribers or purchasers.
 Subscribers login here.
 If you are not an ESDU subscriber you can
 find out how to subscribe, or
 purchase this Data Item from the IHS Standards Store.
This Data Item is complemented by the following software:
Name  Details  

ESDUpac A9510 
This program is only available to subscribers. 
The graphs listed below are available only to subscribers.
 Subscribers login here.
 If you are not an ESDU subscriber find out how to subscribe.
This Data Item contains 8 interactive graph(s) as listed below.
Graph  Title 

Figure 1  Theoretical spanwise centre of pressure 
Figure 2  Theoretical spanwise centre of pressure 
Figure 3  Theoretical spanwise centre of pressure 
Figure 4  Theoretical spanwise centre of pressure 
Figure 5  Theoretical spanwise centre of pressure 
Figure 6  The function F(η, η‾) 
Figure 7  The function G(η) 
Figure 8  The function H(η) 
ESDU Series:
 Aerodynamics
 Aircraft Noise
 Composites
 Dynamics
 Fatigue  Endurance Data
 Fatigue  Fracture Mechanics
 Fluid Mechanics, Internal Flow
 Fluid Mechanics, Internal Flow (Aerospace)
 Heat Transfer
 Mechanisms
 Performance
 Physical Data, Chemical Engineering
 Stress and Strength
 Structures
 Transonic Aerodynamics
 Tribology
 Vibration and Acoustic Fatigue
 Wind Engineering
ESDU Packages:
ESDU Series
 Home  AZ index  Contact Us  Help  About Us  Terms of Use  Privacy Policy  How we use cookies  How to Subscribe 
© 19992019 IHS ESDU, part of IHS Inc.