Document ID: chunk:federal_register_of_legislation:F2010C00408:body:0:p22
Version: federal_register_of_legislation:F2010C00408
Segment Type: other
Provision Reference: 
Character Range: 61695–64664

air-bag inflated.  At the request of the manufacturer and with the consent of the technical service the test may be carried out without the air-bag inflated.

       2.2. Mounting of the steering control when seeking steering control approval related to vehicle approval

       2.2.1. The control shall be mounted on the front section of the vehicle obtained by cutting the body transversely at the level of the front seats and possibly eliminating the roof, windscreen and doors.

        This section shall be fixed rigidly to the test bench so that it does not move under the impact of the head form.

        The tolerance on the control mounting angle shall be  2 degrees of the design angle.

       2.2.2. However, at the request of the manufacturer and with the agreement of the technical service, the steering control may be mounted on a framework simulating the mounting of the steering mechanism, provided that, as compared with the real "front body section/steering mechanism" assembly, the "framework/steering mechanism" assembly has:

       2.2.2.1. the same geometric layout,

       2.2.2.2. greater rigidity.
       2.3. Mounting the steering control when seeking steering control approval only

        The steering control shall be tested complete with trim.  The steering control must have a minimum collapsing space of 100 mm between the steering control and the test bench.  The steering shaft shall be firmly attached to the test bench so that the steering shaft does not move under impact (see fig. 1).

       2.3.1. However, at the request of the manufacturer the test may be carried out under the conditions specified in paragraph 2.2. above.  In such case the approval will only be valid for the specified type(s) of vehicle(s).

       3. TEST APPARATUS

       3.1. This apparatus consists of a fully guided linear impactor, rigid, with a mass of 6.8 kg.  Its impact surface is hemispherical with a diameter of 165 mm.

       3.2 The head-form shall be fitted with two accelerometers and a speed‑measuring device, all capable of measuring values in the impact direction.

       3.3. Measuring instruments

       3.3.1. The measuring instruments used shall comply with ISO 6487: 1987.  In addition they shall have the following characteristics:

       3.3.2. Acceleration
        Channel amplitude class 150 g CAC
        Channel frequency class 600 Hz CFC.

       3.3.3. Speed
        Accuracy to within  1%

       3.3.4. Time recording
        The instrumentation shall enable the action to be recorded throughout its duration and the readings to be made with the accuracy to one-thousandth of a second.  The beginning of the impact at the moment of first contact between the impactor and the steering control shall be noted on the recordings used for analysing the test.

       4. TEST PROCEDURE

       4.1. The plane of the steering control shall be set up perpendicular to the direction of impact.

       4.2. A maximum of