An airplane generates a wake like that of a ship, except that the airplane's wake is invisible. The plane's movement through the air creates-at each wing tip-a "vortex," a turbulent wind moving in a circular pattern like an air whirlpool. Large aircraft, such as commercial jetliners, produce powerful vortices which can be hazardous to small planes following closely be hind. For that reason, the Federal Aviation Administration requires a five mile spacing between large and small aircraft approaching a runway, to allow time for the vortices to dissipate. At busy terminals, this spacing requirement restricts landing operations and contributes to airport congestion. With an eye toward reducing the spacing requirement while assuring lightplane safety, the Department of Transportation is conducting research on the characteristics of aircraft wake. The spinoff system pictured, atop the checkerboard van in the lower photo and in close-up at upper right, is producing valuable information which will enable airport controllers to determine when it is safe for a lightplane to land. Developed by Lockheed Missiles and Space Company, Sunnyvale, California, it is called a Laser Doppler Velocimeter, or LDV.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen


    Exportieren, teilen und zitieren



    Titel :

    Airport Safety Aid


    Erschienen in:

    Erscheinungsdatum :

    1979-02-01


    Medientyp :

    Sonstige


    Format :

    Keine Angabe


    Sprache :

    Englisch




    Airport Safety

    Ashford, Norman / Wright, Paul H. | Wiley | 1992


    Airport Safety Performance

    Roelen, Alfred / Blom, Henk A.P. | Wiley | 2013


    Airport operational safety

    Hall, E.P. | Engineering Index Backfile | 1948


    Airport safety program

    International Civil Airports Association, Standing Commission on Personnel Management and Training | SLUB | 1978


    Airport Safety Research

    Denise R. Jones | NTRS