Date of Award

Spring 1975

Document Type

Thesis

Department

Mechanical & Aerospace Engineering

Program/Concentration

Mechanical Engineering

Committee Director

Robert Ash

Committee Member

D. S. Ousterhout

Committee Member

J. M. Kuhlman

Call Number for Print

Special Collections; LD4331.E56L58

Abstract

A study of the influence of a solid center body on lift loss and pitching moment has been conducted. It has been well established that a round free jet emitted from a flat plate at right angles to a cross flow causes an induced pressure distribution on the plate which adversely affects the lift and pitching stability of the flat plate.

This investigation has employed a 2.58 - cm diameter round jet with a 1.91 - cm diameter solid rounded core in order to modify the induced flow field and attempt to reduce the lift loss and pitching moment. Preliminary results on influence of centerbody location on the induced surface pressure distribution are presented for four different cross flow - jet velocity combinations. These data indicate that lift loss and pitching moment can be favorably changed only under very specific plug location, velocity ratio conditions. Recommendations have been made for further parametric studies which are required to permit optimization (minimization) of the lift loss and pitching moment condition.

Rights

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DOI

10.25777/eqf0-ny24

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