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Non-stationary motion of purely supersonic wings


Froehlich, J. E. (1950) Non-stationary motion of purely supersonic wings. Dissertation (Ph.D.), California Institute of Technology.


A general theory is presented for the calculation of the total forces acting on purely supersonic wings. The method applies to wings having an arbitrary downwash distribution (stationary or non-stationary) and is valid whenever all of the wing edges are supersonic. The general three-dimensional non-stationary problem is reduced to an equivalent two-dimensional problem. In the case of harmonic oscillations the aerodynamic coefficients are expressed in terms of known or tabulated functions. The specific example of an oscillating delta wing is considered and values of the aerodynamic coefficients for plunging, pitching, and rolling oscillations are calculated for two Mach numbers.

Item Type:Thesis (Dissertation (Ph.D.))
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 (advisor)
  • Lagerstrom, Paco A. (co-advisor)
Thesis Committee:
  • Unknown, Unknown
Defense Date:1 January 1950
Record Number:CaltechETD:etd-02122009-155907
Persistent URL:
Default Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:622
Deposited By: Imported from ETD-db
Deposited On:19 Feb 2009
Last Modified:26 Dec 2012 02:31

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PDF (Froehlich_je_1950.pdf) - Final Version
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