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Business jet approach noise abatement techniques - Flight test resultsOperational techniques for reducing approach noise from business jet aircraft were evaluated in flight by measuring the noise generated by five such aircraft during modified approaches. Approaches with 4-deg glide slopes were approximately 4.0 EPNdB quieter than approaches with standard 3-deg glide slopes. Noise reductions for low-drag 3-deg approaches varied widely among the airplanes tested; the fleet-weighted reduction was 8.5 EPNdB. Two-segment approaches resulted in noise reductions of 7.0 EPNdB to 8.5 EPNdB 3 nautical miles and 5 nautical miles from touchdown. Pilot workload increased progressively for the 4-deg, low-drag 3-deg, and two-segment approach.
Document ID
19760048995
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Putnam, T. W.
(NASA Flight Research Center Edwards, CA, United States)
Burcham, F. W.
(NASA Flight Research Center Edwards, Calif., United States)
Date Acquired
August 8, 2013
Publication Date
April 1, 1976
Subject Category
Air Transportation And Safety
Report/Patent Number
SAE PAPER 760463
Meeting Information
Meeting: Business Aircraft Meeting
Location: Wichita, Kan.
Start Date: April 6, 1976
End Date: April 9, 1976
Sponsors: Society of Automotive Engineers
Accession Number
76A31961
Distribution Limits
Public
Copyright
Other

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