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A Preliminary Study of the Problem of Boundary Layer Control


Smith, Apollo Milton Olin (1938) A Preliminary Study of the Problem of Boundary Layer Control. Master's thesis, California Institute of Technology. doi:10.7907/STNT-3N37.


This thesis presents a study of the problem of securing high lifts by means of boundary layer removal, together with first results of tests on the Boundary Layer Model of the Guggenheim Aeronautics Laboratory, California Institute of Technology (hereinafter called GALCIT). It is divided into two parts: first, a review and discussion of previous work, and second, presentation and development of methods used for carrying out tests upon the GALCIT model, together with experimental results obtained from the tests upon the model.

Previous researches show that boundary layer removal is indeed successful in securing high lift coefficients. Study reveals also that results from one experiment may differ greatly from those of another. Consequently, previous work is of little help in predicting results to be obtained for a design different from the model tested.

Results on the GALCIT model have not been favorable, but it is believed that flow tests have found the difficulty. Consequently, the experimental work has value only for the light it sheds upon the future course of this research at the Institute.

Item Type:Thesis (Master's thesis)
Subject Keywords:Aeronautical Engineering
Degree Grantor:California Institute of Technology
Division:Engineering and Applied Science
Major Option:Aeronautics
Thesis Availability:Public (worldwide access)
Research Advisor(s):
  • Millikan, Clark Blanchard
Thesis Committee:
  • Unknown, Unknown
Defense Date:1 January 1938
Record Number:CaltechETD:etd-12052007-091749
Persistent URL:
Default Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:4798
Deposited By: Imported from ETD-db
Deposited On:06 Dec 2007
Last Modified:03 Oct 2019 23:38

Thesis Files

PDF (Smith_amo_1938.pdf) - Final Version
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