Detailed Design of a 2000-SHP Advanced Technology V/STOL Propeller System
Abstract
The purpose of the program was to establish a sound technical foundation for the inclusion of lightweight titanium barrels, titanium power gearing, and composite boron-aluminum spar blades in an advanced (1970-1975) V/ STOL propeller system. Several new titanium barrel concepts were designed and analyzed. This study has led to the recommendation of a titanium barrel with a spherical hub structure for subsequent fabrication and development testing. Endurance testing of titanium gears was performed which indicated that improved wear coatings would be required in order to demonstrate a significant weight saving potential over 1975 steel gearing. However, the diffused nickel coating would permit significant weight reductions over current steel power gearing. Titanium gears were also coated and evaluated under this program using an ion- sputtering coating technique. Limited testing of such gears resulted in early scuffing and wear of the coating; however, the basic coating is sound and processsing refinements have been defined that indicate potential for sputtered- coated titanium gears. The fabrication and testing of boron-aluminum composite blade retention specimens proved to be successful and have provided a sound basis for the fabrication and development testing of full-scale propeller blades. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1969
- Accession Number
- AD0864446
Entities
People
- D. P. Currie
Organizations
- United Technologies Corporation