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The lift of thin airfoils at high-subsonic speeds


Willmarth, William W. (1954) The lift of thin airfoils at high-subsonic speeds. Dissertation (Ph.D.), California Institute of Technology.


Experimental results are presented for the lift characteristics of thin, two-dimensional airfoils at high-subsonic speeds and small angles of attack. Symmetrical airfoils with different locations of maximum thickness were investigated using a surface pressure probe technique which should find use in other applications.

The flow fields over each airfoil are discussed and the quantitative results for the lift and location of the center of lift are compared with theory whenever possible. The effects of flow separation caused by boundary-layer shock-wave interaction are noted and discussed. In particular, the possibility of the forced oscillation of control surfaces due to boundary layer separation is mentioned.

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):
  • Liepmann, Hans Wolfgang (advisor)
  • Cole, Julian D. (advisor)
Thesis Committee:
  • Unknown, Unknown
Defense Date:1 January 1954
Record Number:CaltechETD:etd-01222004-114509
Persistent URL:
Default Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:272
Deposited By: Imported from ETD-db
Deposited On:28 Jan 2004
Last Modified:26 Dec 2012 02:28

Thesis Files

PDF (Willmarth_ww_1954.pdf) - Final Version
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