An experimental assessment was made of two commercially available inertial navigation systems (INS) with regard to their velocity measuring capability for use in wind, shear, and long-wavelength atmospheric turbulence research. The assessment was based on 52 sets of postflight measurements of velocity (error) during a 'Schuler cycle' (84 minutes) while the INS was still operating but the airplane was motionless. Four INS units of one type and two units of another were tested over a period of 2 years after routine research flights similar to air-linetype operations of from 1 to 6 hours duration. The maximum postflight errors found for the 52 cases had a root mean square value of 2.82 m/sec with little or no correlation of error magnitude with flight duration. Using an INS for monitoring ground speed during landway in a predicted high wind shear situation could lead to landing speeds which are dangerously high or low.


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    Titel :

    Accuracy of Aircraft Velocities from Inertial Navigation Systems for Application to Airborne Wind Measurements


    Beteiligte:
    R. H. Rhyne (Autor:in)

    Erscheinungsdatum :

    1980


    Format / Umfang :

    15 pages


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch





    Aircraft Inertial Navigation

    Lee, J.A. | Emerald Group Publishing | 1964


    Aircraft inertial navigation

    Lee, J.A. | Engineering Index Backfile | 1964