Accession Number:

AD0869390

Title:

An Experimental Investigation of the Effects of Rotor Head Configuration and Fuselage Yaw on the Wake Characteristics and Rotor Performance of a 1/8th Scale Helicopter

Descriptive Note:

Final rept.

Corporate Author:

UNITED TECHNOLOGIES CORP STRATFORD CT SIKORSKY AIRCRAFT DIV

Personal Author(s):

Report Date:

1970-02-01

Pagination or Media Count:

234.0

Abstract:

The report presents the results of an experimental investigation of the effects of rotor head configuration and fuselage yaw on the wake characteristics and rotor performance of a generalized 18th scale helicopter model. Several rotor head configurations were tested with and without rotor blades at various operating conditions. Fuselage yaw angle was varied for all conditions tested. The flow direction and dynamic pressure at the tail of the model were measured, as were rotor shaft forces and moments. When the model was tested with the rotor, blade vibratory stresses were measured. Wake survey data were obtained with and without rotor blades however, the data obtained with blades were not consistent.

Subject Categories:

  • Helicopters
  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE