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Non-planar wings in non-planar ground effect


Davis, Joseph Eugene (1972) Non-planar wings in non-planar ground effect. Dissertation (Ph.D.), California Institute of Technology.


A numerical method is developed for solving the problem of a wing in arbitrary non-planar ground effect. The linearized equations of unsteady motion for an arbitrary non-planar wing in non-planar ground effect are presented. Numerical calculations were made to determine all the aerodynamic characteristics and stability derivatives for various thin, uncambered planar and non-planar wings (including two wings connected in tandem) in planar and non-planar ground effect. These calculations were incorporated into the equations of unsteady motion to determine the dynamic stability characteristics of these wings in the various ground effect situations. Several wings were found to be longitudinally stable, but only in rare cases were they found to be laterally stable. An experiment was conducted to compare some of the numerical calculations with reality. The agreement was reasonable.

Item Type:Thesis (Dissertation (Ph.D.))
Subject Keywords:Aeronautics
Degree Grantor:California Institute of Technology
Division:Engineering and Applied Science
Major Option:Aeronautics
Thesis Availability:Public (worldwide access)
Research Advisor(s):
  • Stewart, Homer Joseph
Thesis Committee:
  • Unknown, Unknown
Defense Date:17 September 1971
Record Number:CaltechTHESIS:09272010-162542308
Persistent URL:
Default Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:6064
Deposited By: Benjamin Perez
Deposited On:28 Sep 2010 15:07
Last Modified:26 Dec 2012 04:30

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