NDLI: Analysis of nonplanar wing-tip-mounted lifting surfaces on low-speed airplanes

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Analysis of nonplanar wing-tip-mounted lifting surfaces on low-speed airplanes

Content Provider	NASA Technical Reports Server (NTRS)
Author	Roskam, J. Vandam, C. P.
Copyright Year	1983
Description	Nonplanar wing tip mounted lifting surfaces reduce lift induced drag substantially. Winglets, which are small, nearly vertical, winglike surfaces, are an example of these devices. To achieve reduction in lift induced drag, winglets produce significant side forces. Consequently, these surfaces can seriously affect airplane lateral directional aerodynamic characteristics. Therefore, the effects of nonplanar wing tip mounted surfaces on the lateral directional stability and control of low speed general aviation airplanes were studied. The study consists of a theoretical and an experimental, in flight investigation. The experimental investigation involves flight tests of winglets on an agricultural airplane. Results of these tests demonstrate the significant influence of winglets on airplane lateral directional aerodynamic characteristics. It is shown that good correlations exist between experimental data and theoretically predicted results. In addition, a lifting surface method was used to perform a parametric study of the effects of various winglet parameters on lateral directional stability derivatives of general aviation type wings.
File Size	6796596
Page Count	172
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19830017396
Archival Resource Key	ark:/13960/t0zp8vp4n
Language	English
Publisher Date	1983-06-01
Access Restriction	Open
Subject Keyword	Aerodynamics Flight Tests Winglets Lift Devices Aircraft Performance Wing Tips General Aviation Aircraft Induced Drag Directional Stability Agriculture Aerodynamic Characteristics Lateral Control Stability Derivatives Aerodynamic Loads Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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