Accession Number:

AD0734338

Title:

Full-Scale Wind Tunnel Investigation of the Advancing Blade Concept Rotor System

Descriptive Note:

Final rept.

Corporate Author:

UNITED TECHNOLOGIES CORP STRATFORD CT SIKORSKY AIRCRAFT DIV

Personal Author(s):

Report Date:

1971-08-01

Pagination or Media Count:

828.0

Abstract:

A 40-foot-diameter ABC coaxial rotor system was tested in a 40 ft x 80 ft wind tunnel. The six rigid blades were instrumented to measure flatwise, edgewise, and torsional strain. Advance ratios up to 0.91 and tip Mach numbers to 0.83 were tested. Lateral displacement of individual rotor lift was varied. The performance, control, stress, and vibration data recorded during these tests are presented and discussed.

Subject Categories:

  • Helicopters

Distribution Statement:

APPROVED FOR PUBLIC RELEASE