... is described here and compared with the performance of a baseline shaft and strut mounted propulsor. This hybrid contra-rotating configuration uses twin tractor propulsion pods to power the aft propellers of the contra-rotating set, where the forward propellers are powered by conventional shaft lines...

... calculation full scale case coefficient mau propeller cavitation aft propeller boundary layer fore propeller chen inflow propeller propeller disk interaction torque coefficient mpuf3a calculation A Coupled RANSNLM Approach for Multi-component Propulsor Analysis Sing-Kwan Lee' and Hamn-Ching...

... of results from the current numerical method with those of other computational methods and with those measured in experiments are presented. upstream oil & gas effective wake circulation euler equation mpuf-3a coefficient kinna symposium aft propeller loading fore propeller solver euler...

... calculation strain variation variation propeller force manoeuvre contra-rotating propeller forward propeller unsteady propeller shaft force aft propeller full scale ship model starboard propeller shaft force coordinate system propeller ..l THE SOCIETY OF NAVAL ARCHITECTS AND MARINE ENGINEERS...

... by the application of counterrotating propellers compared to a single propeller. blade area ratio single propeller shaft speed slipstream efficiency rotor crp plane canbination torque coefficient application procedure aft propeller stator propeller cr propeller test result hsva model prop...

..., and it includes faster and more accurate methods of computing the mutual interactions between the forward and aft propeller. The addition, the theory has been extended to allow for finite loading at the blade roots and takes into account the effect of the hub boundary. The paper provides numerical predictions...

.... This is achieved by separating the treatment of a set of propellers into two independent ones with corrections on the intake velocities and on the speed of rotation of the aft propeller. A practical application of a contra-rotating propeller in a highspeed power boat is then discussed. It turned out...

... operating conditions. Sketches, drawings, and other data depicting the test rig are included. marine transportation propeller arrangement efficiency requirement aft propeller mover propulsive efficiency reduction torque reaction naval architect shaft generator configuration world trade...