Berry, B F; Harris, A L; Weston, R J*; Steele, D* (1993) Exercise Keevil: Noise levels of six military helicopters. NPL Report. RSA(EXT)0042

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Abstract

For a number of years the National Physical Laboratory, supported by the Ministry of Defence, has been developing AIRNOISE, a mathematical model for computing aircraft noise contours. The model is now being extended to include helicopter operations. In order to provide basic source noise data for the model, a special noise trial -Exercise Keevil -has been conducted at RAF Keevil in Wiltshire. One helicopter of each of six types performed a variety of flight operations over an array of microphones. Information on aircraft position and speed were obtained by video tracking techniques. This report describes the trial and presents the results obtained.

Item Type:	Report/Guide (NPL Report)
NPL Report No.:	RSA(EXT)0042
Subjects:	Acoustics Acoustics > Sound in Air
Last Modified:	02 Feb 2018 13:19
URI:	http://eprintspublications.npl.co.uk/id/eprint/2237

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