An investigation to determine the effects of pavement surface condition on the cornering forces developed by a group of 6.50x13 automobile tires of different tread design was conducted at the Langley aircraft landing loads and traction facility. The tests were made at fixed yaw angles of 3,4.5, and 6 deg at forward speeds up to 80 knots on two concrete surfaces of different texture under dry, damp, and flooded conditions. The results showed that the cornering forces were extremely sensitive to tread pattern and runway surface texture under all conditions and that under flooded conditions tire hydroplaning and complete loss of cornering force occurred at a forward velocity predicted from an existing formula based on tire inflation pressure. Futher, tests on the damp concrete with a smooth tire and a four-groove tire showed higher cornering forces at a yaw angle of 3 deg than at 4.5 deg; this indicated that maximum cornering forces are developed at extremely small steering angles under these conditions. (Author)


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    Titel :

    An Evaluation of Some Unbraked Tire Cornering Force Characteristics


    Beteiligte:
    T. J. Leland (Autor:in)

    Erscheinungsdatum :

    1972


    Format / Umfang :

    37 pages


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch






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