Design and Testing of a Low Noise Flight Guidance Concept
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Design and Testing of a Low Noise Flight Guidance Concept

Design and Testing of a Low Noise Flight Guidance Concept


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About the Book

A flight guidance concept was developed to assist in flying continuous descent approach (CDA) procedures designed to lower the noise under the flight path of jet transport aircraft during arrival operations at an airport. The guidance consists of a trajectory prediction algorithm that was tuned to produce a high-efficiency, low noise flight profile with accompanying autopilot and flight display elements needed by the flight control system and pilot to fly the approach. A key component of the flight guidance was a real-time display of energy error relative to the predicted flight path. The guidance was integrated with the conventional Flight Management System (FMS) guidance of a modern jet transport airplane and tested in a high fidelity flight simulation. A charted arrival procedure, which allowed flying conventional arrivals, CDA arrivals with standard guidance, and CDA arrivals with the new low noise guidance, was developed to assist in the testing and evaluation of the low noise guidance concept. Results of the simulation testing showed the low noise guidance was easy to use by airline pilot test subjects and effective in achieving the desired noise reduction. Noise under the flight path was reduced by at least 2 decibels in Sound Exposure Level (SEL) at distances from about 3 nautical miles out to about 17.5 nautical miles from the runway, with a peak reduction of 8.5 decibels at about 10.5 nautical miles. Fuel consumption was also reduced by about 17% for the LNG conditions compared to baseline runs for the same flight distance. Pilot acceptance and understanding of the guidance was quite high with favorable comments and ratings received from all test subjects.Williams, David H. and Oseguera-Lohr, Rosa M. and Lewis, Elliot T.Langley Research CenterFLIGHT CONTROL; FLIGHT TESTS; JET AIRCRAFT; LOW NOISE; AIRCRAFT GUIDANCE; DESCENT; FLIGHT MANAGEMENT SYSTEMS; FLIGHT PATHS; RUNWAYS; SIMULATION; AUTOMATIC PILOTS; TRAJECTORIES; DISPLAY DEVICES; NOISE REDUCTION


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Product Details
  • ISBN-13: 9781720459552
  • Publisher: Createspace Independent Publishing Platform
  • Publisher Imprint: Createspace Independent Publishing Platform
  • Height: 279 mm
  • No of Pages: 74
  • Spine Width: 4 mm
  • Width: 216 mm
  • ISBN-10: 172045955X
  • Publisher Date: 29 May 2018
  • Binding: Paperback
  • Language: English
  • Returnable: N
  • Weight: 195 gr


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