| Title | Noise measurement flight test for the Bell 222 Twin Jet helicopter : data and analyses |
|---|---|
| Record ID | 47209 |
| Personal Name Creator |
Newman, J. Steven; Rickley, Edward J.; Bland, Tyrone L.; Daboin, Sharon |
| Source | 224p. in various pagings |
| Corporate Creator | United States. Department of Transportation. Federal Aviation Administration. Office of Environment and Energy; John A. Volpe National Transportation Systems Center (U.S.) |
| Publisher | United States. Department of Transportation. Federal Aviation Administration. Office of Environment and Energy |
| Publication Date | 19840228 |
| Language | English |
| Abstract | This report is the first in a series of seven documenting the FAA helicopter noise measurement program conducted at Dulles International Airport during the summer of 1983. The Dauphin test program involved the acquisition of detailed acoustical, position and meteorological data. This test program was designed to address a series of objectives including: 1) acquisition of acoustical data for use in assessing heliport environment impact, 2) documentation of directivity characteristics for status operations of helicopters, 3) establishment of ground-to-ground and air-to-ground acoustical propagation relationships for helicopters, 4) determination of noise event duration influences on energy dose acoustical metrics, 5) examination of the differences between noise measured by a surface mounted microphone and a microphone mounted at a height of four feet (1.2 meters), and 6) documentation of noise levels acquired using international helicopter noise certification test procedures. |
| Rosap ID | dot:9793 |
| Rosap URL | https://rosap.ntl.bts.gov/view/dot/9793 |
| TRT Terms | Helicopters; Heliports; Aircraft noise; Airport noise; Certification; Sound transmission; Acoustic emission; Microphones; Acoustic equipment; Environmental impacts |
| General Subjects | Directivity; Noise certification |
| Classification | AGR - IMPACTS - Environment; NTL - AVIATION - Aviation Energy and Environment; NTL - ENERGY AND ENVIRONMENT - Aviation Energy and Environment; NTL - ENERGY AND ENVIRONMENT - Environment Impacts |
| Geographical Coverage |
Washington (District of Columbia) |
| Report Number | DOT-FAA-EE-84-1 |
| Availability | Volpe National Transportation Systems Center, Technical Reference Center |
| Resource type | Tech Report |
| URL | https://ntlrepository.blob.core.windows.net/lib/47000/47200/47209/FAA-EE-84-1.pdf |
| Format | |
| Database | NTL Digital Repository |