Document ID: chunk:federal_register_of_legislation:F2005L03992:body:0:p13
Version: federal_register_of_legislation:F2005L03992
Segment Type: other
Provision Reference: 
Character Range: 32938–35737

prior to the re-run.  The 3-D H machine should not be left loaded on the seat assembly longer than the time required to perform the test.
    4.16. If the seats in the same row can be regarded as similar (bench seat, identical seats, etc.) only one "H" point and one "actual torso angle" shall be determined for each row of seats, the 3-D H machine described in appendix 1 to this annex being seated in a place regarded as representative for the row.  This place shall be:
    4.16.1. in the case of the front row, the driver's seat;
    4.16.2.  in the case of the rear row or rows, an outer seat.
    Annex 3 - Appendix 1

    DESCRIPTION OF THE THREE DIMENSIONAL "H" POINT MACHINE [*/]

    (3-D H machine)

    1. Back and seat pans
     The back and seat pans are constructed of reinforced plastic and metal; they simulate the human torso and thigh and are mechanically hinged at the "H" point.  A quadrant is fastened to the probe hinged at the "H" point to measure the actual torso angle.  An adjustable thigh bar, attached to the seat pan, establishes the thigh centreline and serves as a baseline for the hip angle quadrant.

    2. Body and leg elements
     Lower leg segments are connected to the seat pan assembly at the T-bar joining the knees, which is a lateral extension of the adjustable thigh bar.  Quadrants are incorporated in the lower leg segments to measure knee angles.  Shoe and foot assemblies are calibrated to measure the foot angle.  Two spirit levels orient the device in space.  Body element weights are placed at the corresponding centres of gravity to provide seat penetration equivalent to a 76 kg male.  All joints of the 3-D H machine should be checked for free movement without encountering noticeable friction.

    Figure 1  -  3-D H machine elements designation

    Figure 2  -  Dimensions of the 3-D H machine elements and load distribution

    Annex 3 - Appendix 2

    THREE-DIMENSIONAL REFERENCE SYSTEM

    1. The three-dimensional reference system is defined by three orthogonal planes established by the vehicle manufacturer (see figure).[*/]

    2. The vehicle measuring attitude is established by positioning the vehicle on the supporting surface such that the co-ordinates of the fiducial marks correspond to the values indicated by the manufacturer.

    3. The co-ordinates of the "R" point and the "H" point are established in relation to the fiducial marks defined by the vehicle manufacturer.

    Figure - Three-dimensional reference system

    Annex 3 - Appendix 3

    REFERENCE DATA CONCERNING SEATING POSITIONS

    1. Coding of reference data
     Reference data are listed consecutively for each seating position.  Seating positions are identified by a two-digit code.  The first digit is an Arabic numeral and designates the