Monday, August 26, 1968 

 Morning Session 



UNSTEADY PROPELLER FORCES 



Chairmen: Ten. Gen. G. N. A. Siena 



Ministero Difesa, Marina 

 Rome, Italy 



and 



W. P. A. Van Lammeren 



Netherlands Ship Model Basin 

 Wageningen, The Netherlands 



Page 



Pressure Field Around a Propeller Operating in Spatially Nonuniform 



Flow 3 



V. F. Bavin, Kryloff Ship Research Institute, Leningrad, U.S.S.R. 



On the Theory of Unsteady Propeller Forces 17 



R. Yamazaki, Department of Naval Architecture, Kyushu 

 University, Fukuoka, Japan 



A Lifting Surface Theory of Marine Propellers 87 



P. C. Pien and J. Strom- Tej sen. Naval Ship Research and 

 Development Center, Washington, D. C. 



Model Tests on Contrarotating Propellers 135 



J. D. Van Manen, Netherlands Ship Model Basin, Wageningen, 

 The Netherlands 



