A Caltech Library Service

An Investigation of Vortex Shedding as Related to the Self-Excited Torsional Oscillation of an Airfoil


Chuan, Raymond Lu-Po (1948) An Investigation of Vortex Shedding as Related to the Self-Excited Torsional Oscillation of an Airfoil. Engineer's thesis, California Institute of Technology. doi:10.7907/6JQH-FS81.


This report covers the results of the experimental investigation of the self-excited torsional oscillation of a NACA 0006 airfoil suspended elastically. The relationship between the torsional oscillation and the shedding of vortices was investigated for this airfoil.

Two types of oscillation phenomena were found in the investigation. One type, exhibited by cases with angles of attack just above stall, persisted with increasing velocity without reaching any apparent limit within the range of velocity attainable in the present wind-tunnel. The other type, exhibited by cases with higher angles of attack, only showed self-excited oscillations in a certain range of velocity, the range decreasing with increasing angle of attack.

Item Type:Thesis (Engineer'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):
  • Dunn, Louis G. (advisor)
  • Nagamatsu, Henry T. (advisor)
Thesis Committee:
  • Unknown, Unknown
Defense Date:1 June 1948
Record Number:CaltechETD:etd-02102009-131702
Persistent URL:
Default Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:600
Deposited By: Imported from ETD-db
Deposited On:13 Feb 2009
Last Modified:22 Mar 2023 23:02

Thesis Files

PDF (Chuan_rl_1948.pdf) - Final Version
See Usage Policy.


Repository Staff Only: item control page