Presenter Information

Stephen Witherspoon


Mechanical and Aerospace Engineering

Research Advisor

Finaish, Fathi

Advisor's Department

Mechanical and Aerospace Engineering

Funding Source

Funding of this project was made possible by the Opportunities for Undergraduate Research Experience Program and the NASA Missouri Space Grant Consortium.

Meeting Name

4th Annual UMR Undergraduate Research Symposium (1994: Mar. 23, Rolla, MO)


A computer code was developed to implement methods of analyzing unsteady pressure measurements acquired from a wing model immersed in transonic flow. The code uses the fast Fourier Transform to identify phase changes and magnitudes of dominant frequencies over time in the unsteady pressure coefficients. The transformed data, as well as the raw data, are graphed and the results explained in detail identifying features depicted in the graphs. Also, the code performs some simple statistical calculations and smoothes the data to remove insignificant noise in the signal, if desired.

Document Type


Presentation Date

23 Mar 1994