Accession Number:

AD0905180

Title:

Power Transfer Systems for Future Navy Helicopters.

Descriptive Note:

Final rept. 25 Jun 70-28 Jun 72,

Corporate Author:

KAMAN AEROSPACE CORP BLOOMFIELD CT

Personal Author(s):

Report Date:

1972-11-01

Pagination or Media Count:

252.0

Abstract:

The purpose of this program was to conduct an analysis of helicopter power transfer systems pts, both conventional and advanced concept type, with the objective of reducing specific weights and improving reliability beyond present values. The analysis satisfied requirements specified for a 200,000 pound cargo transport helicopter CTH, a 70,000 pound heavy assault helicopter, and a 15,000 pound non-combat search and rescue helicopter. Four selected gearing systems out of seven studied, optimized for lightest weight and equal reliability for the CTH, using component proportioning via stress and stiffness equations, had no significant difference between their aircraft payloads. All optimized pts were approximately 70 of statistically predicted weight. Reliability increase is predicted via gearbox derating using Weibull relationships. Among advanced concepts, the Turbine Integrated Geared Rotor was competitive for weight, technology availability and reliability increase but handicapped by a special engine requirement. The warm cycle system was found not competitive. Helicopter parametric weight analysis is shown. Advanced development Plans are presented for the pts for the CTH, including total pts system, selected pts components, and scale model flight testing in a Kaman HH2 helicopter.

Subject Categories:

  • Helicopters
  • Jet and Gas Turbine Engines

Distribution Statement:

APPROVED FOR PUBLIC RELEASE