Accession Number : AD0755493

Title :   A Flow Visualization Study of a High Pitch Cycloidal Propeller.

Descriptive Note : Final rept.,

Corporate Author : ENGINEERING RESEARCH ASSOCIATES TORONTO (ONTARIO)

Personal Author(s) : Jobst,Alfred L. ; Bandler,Peter A.

Report Date : AUG 1972

Pagination or Media Count : 60

Abstract : An experimental test program designed to study the flow through a cycloidal propeller (P/D = pi/.70) was conducted in the water tunnel at the National Research Laboratories in Ottawa. Visualization of the flow was achieved by injecting reflecting particles that followed the streamlines and by illuminating sections of the flow with a plane light source. Records were made using both still and movie cameras. The tunnel speed was varied to permit views of the working model to be taken at several advance ratios. For purposes of detailed analysis, the actual angle of attack and resultant velocity vectors were calculated from the inflow parameters obtained from still pictures. The loads normal to the blade were measured and compared to loads obtained by calculation. (Author)

Descriptors :   (*CYCLOIDAL PROPELLERS, *FLOW VISUALIZATION), ROTATION, PROPELLER BLADES, FLUID FLOW, WATER TUNNELS, EXPERIMENTAL DATA

Subject Categories : Marine Engineering
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE