This report establishes the current (1982) FAA helicopter noise data base for use in environmental impact assessment. The report sets out assumptions, methodologies, and techniques used in arriving at noise-exposure-versus-distance relationships. Noise data are provided for 15 helicopters, including five flight regimes each: takeoff, approach, level flyover, hover in-ground-effect (HIGE) and hover out-of-ground effect (HOGE). When possible, level flyover data are presented for a variety of airspeeds. Sound exposure level (SEL) is provided for all operational modes except hover. In the case of hover operations (both HOGE and HIGE), the maximum A-Weighted Sound Level (LAM) is identified as a function of distance. The report also includes a discussion of helicopter performance characteristics required for full computer modeling of helicopter/heliport noise exposure. (Author)
Helicopter Noise Exposure Curves for Use in Environmental Impact Assessment
1982
168 pages
Report
No indication
English
Aircraft , Noise Pollution & Control , Aircraft noise , Exposure(General) , Environmental impact , Data bases , Noise pollution , Sound pressure , Helicopters , Data acquisition , Extrapolation , Data reduction , Contours , Range(Distance) , Takeoff , Airspeed , Approach , Hovering , Planning , Airports , Heliports , Performance(Engineering) , Flight , Tables(Data) , Environmental impact assessment
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