Operational 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° glide slopes were approximately 4.0 EPNdB quieter than approaches with standard 3° glide slopes. Noise reductions for low-drag 3° 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°, low-drag 3°, and two-segment approach.


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    Title :

    Business Jet Approach Noise Abatement Techniques - Flight Test Results


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    National Business Aircraft Meeting and Engineering Display ; 1976



    Publication date :

    1976-02-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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