Accession Number : ADA213124

Title :   Trade Off Analysis of Technology Needs for Public Service Helicopters.

Descriptive Note : Final contractor rept.,

Corporate Author : ORI INC ROCKVILLE MD

Personal Author(s) : Bauchspies, James S. ; Bryant, William R., Jr. ; Simpson, William E.

Report Date : OCT 1985

Pagination or Media Count : 118

Abstract : This report on 'Tradeoff Analysis of Technology Needs for Public Service Helicopters' presents the results of an independent analysis of Public Service Helicopter technology needs identified by a Public Service Helicopter User's Workshop at the NASA Ames Research Center in July 1980. This work was conducted to provide further information to support continuing assessments by NASA's Office of Aeronautics and Space Technology (OAST) of factors affecting the need for aeronautical research applicable to rotorcraft technology and related planning of research and technology (R&T) programs. The scope of work involved two phases of effort under Tasks 013 and 013A of NASA Contract NASW-3554. The initial effort classified the needs identified by Public Service Helicopter (PSH) users into those that would require new technology and those that could be met by application of existing technology. In addition, some needs impacted upon others, indicating some degree of tradeoff would be required. The results of that effort were presented in a separate ORI report in December 1983. This report presents the results of the second phase of effort involving comparisons of the PSH technology needs with NASA's rotorcraft technology programs and relevant objectives of the Army's Light Helicopter (LHX) program. Further, the results of a preliminary analysis to quantify the tradeoffs required by combining selected performance needs into the same helicopter design, as well as discussion of new concepts, is reported. Keywords: Variable tilt shaft helicopter; Hover in ground effect; LHX; Tilt rotor. (KT)

Descriptors :   *HELICOPTERS, *TRADE OFF ANALYSIS, AERONAUTICS, ARMY, GROUND EFFECT, HOVERING, TECHNOLOGY TRANSFER, LIGHTWEIGHT, PHASE, PLANNING, RESEARCH FACILITIES, ROTARY WING AIRCRAFT, ROTORS, SECONDARY, SHAFTS(MACHINE ELEMENTS), SPACE TECHNOLOGY, TECHNOLOGY FORECASTING, TILT, USER NEEDS, VARIABLES.

Subject Categories : Helicopters

Distribution Statement : APPROVED FOR PUBLIC RELEASE