CONTENTS 



Page 



Preface ^^^ 



Welcome (Translation) ^^^^ 



Gen. Isp. G. N. G. Di Mento, Navalcostarmi, Rome, Italy- 

 Welcome (Translation) ^^^ 



Senator Donati, Sotto Segretano della Difesa, Rome, Italy 



Opening Remarks ^^ 



Emilio Castagneto, University of Naples, Naples, Italy 



Opening Remarks xvii 



Capt. C. T. Froscher, United States Office of Naval Research 

 Branch Office, London, England 



UNSTEADY PROPELLER FORCES 



PRESSURE FIELD AROUND A PROPELLER OPERATING IN 



SPATIALLY NONUNIFORM FLOW 3 



V. F. Bavin, M. A. Vashkevich and I. Y. Miniovich, 

 Kryloff Ship Research Institute, Leningrad, U.S.S.R. 



DISCUSSION 14 



G. G. Cox, Naval Ship Research and Development Center, 

 Washington, D. C. 



DISCUSSION 14 



J. P. Breslin, Davidson Laboratory, Stevenson Institute 

 of Technology, Hoboken, New York 



REPLY TO DISCUSSION 15 



V. F. Bavin, Kryloff Ship Research Institute, Leningrad, 

 U.S.S.R. 



THEORY OF UNSTEADY PROPELLER FORCES 17 



Ryusuke Yamazaki, Kyushu University, Fukuoka, Japan 



DISCUSSION 83 



P. C. Pien, Naval Ship Research and Development Center, 



Washington, D.C. 

 DISCUSSION 84 



William B. Morgan, Naval Ship Research and Development 



Center, Washington, D.C. 

 DISCUSSION 84 



V. F. Bavin, Kryloff Ship Research Institute, Leningrad, 



U.S.S.R. 

 REPLY TO DISCUSSION 85 



Ryusuke Yamazaki 



A GENERAL THEORY FOR MARINE PROPELLERS 87 



Pao C. Pien and J. Strom-Tejsen, Naval Ship Research and 

 Development Center, Washington, D. C. 



IV 



