Title

Aerodynamic Shape of the Wing Tips

Index Abstract

Not Available

Photo Quality

Complete

Report Number

AF TR 5752

Extent

18

Identifier

ADA800374

ADA800374

Access Rights

None

Distribution Classification

1

DTIC Record Exists

Yes

Distribution Conflict

No

Report Availability

Full text available

Abstract

The author studied the aerodynamic characteristics of wing tips, and he did, and had German research institutions do, experimental investigations concerning the mechanism of the tip vortices and the lift/drag ratio of a wing fitted with several differently shaped tip caps. There are two ways in which the wing tips affect flow and forces on a wing: (a) Considering the tip vortices the effective span of a wing does not coincide with the geometrical span; that is, the geometrical location of the tip vortices depends upon the shape of the wing tips. (b) Some parasite drag originates from the wing tips, its amount also depending upon the shape of the tip caps. The main results of the tests as mentioned, are presented in this report, and in the optimum wing-tip shape (No. 5) is described in Figure 9. This tip cap has a sharp side edge, its plane form shows a corner at the trailing edge and its upper surface extends approximately straight to the end. Employing this kind of wing tip the climbing speed is increased in the order of 1 ft/sec and the range by 1 or 2%, in comparison to disadvantageous wing tips.

Laboratory

Aircraft Laboratory

Date Modified

Scanned by request 2/15/2018 submitted by Intrepid (Aerospace Industry - Domestic)

Provenance

Bombardier/Aero

Type

report

Format

1 online resource

Subject

Wing Tips

Aerodynamic Configurations

Creator

Hoerner, Sighard