Exploratory investigation of decelerating approaches of a twin-engined jet transport: Vol. II: Moving-base simulation and comparison with related experiments

Report (1976)

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Statistical analysis Noise reduction Fuel consumption Flight simulation Automatic control Aircraft noise Flight simulator Motion simulator Pilot performance Ratings Instrument approach Transport aircraft Flight characteristics Throttling Flaps (control surfaces) Atmospheric turbulence Decelerating approach Wind shear Approach control Jet aircraft DC-9 aircraft Statisticall tests
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Published Date

01-10-1976

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NLR-TR 76150 U

Abstract

Aircraft noise perceived on the ground can be reduced by decelerating the aircraft during the landing approach. As an additional benefit the lower thrust settings existing during a part of the approach and the shorter approach time result in a reduced fuel consumption as compared to a conventional approach. This report deals with an experiment about decelerating approach proceiures carried out with a moving-base flight simulator. During the decelerating approaches the constant deceleration (0.5 kt/s) initiated (with or without autothrottle) at a speed appreciably above the final approach speed was executed with an increasing flap deflection (constant rate). Results of performance measurements, pilot effort ratings and comment are given. A comparison with a fixed-base simulation and an in-flight experiment has been made. During the decelerating approaches, considered as acceptable, more effort was spent in obtaining a performance comparable to the performance obtained during a conventional approach.