Acoustical Evaluation of the RC2-60 Engine in a Light Tactical Aircraft.
Abstract
The Department of Defense, as the spokesman for the military services, has identified the requirement for a quiet forward area trail and road interdiction mission (TRIM) type vehicle for limited warfare type situations. In response to this need, both the military services and industry have addressed to near term and late 1970 solutions. Definition of the major acoustical sources in such an aircraft system indicates that contributors are the propulsion system with its attendant inlet and exhaust, as well as internal mechanical noise sources, the propeller system and finally the aerodynamic signature of the basic airframe. While it is possible to identify each of these contributors on an individual component basis, it is ultimately more meaningful and necessary to establish their interrelationships when combined as a total flying system. The goal of the contract was to demonstrate a sound pressure level of 45db maximum in the 200-500 Hz range at an altitude of 1500 feet and air speeds approaching 150 MPH. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1971
- Accession Number
- AD0889580
Entities
People
- R. J. Mooney