ACKNOWLEDGMENTS 



The authors are indebted to a number of people for their assistance in 

 the course of this work. Mr. T.A. LaFone, Mr. J. Diskin, and Ms. R.B. 

 Hurwitz aided in the development and execution of the various computer pro- 

 grams. Mr. C. Dawson and Ms. J. Dean provided invaluable guidance in the 

 use of the XYZ potential-flow computer program. Finally, the authors wish 

 to thank Messrs. J. McCarthy, T. Huang, and H. Wang for their continued 

 interest in the analytical work and support in obtaining experimental data 

 presented in this report. 



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