Document ID: chunk:federal_register_of_legislation:F2025L00028:front:0:p34
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impulse, I, calculated from the integration of the total force over the period of contact, with the momentum change over that period (M*V).

              6.6.5.2. Compare the total energy change to the change in kinetic energy of the MDB, given by:

           Where Vi is the impact velocity and M the whole mass of the MDB

                If the momentum change (M*V) is not equal to the total impulse (I) ± 5 per cent, or if the total energy absorbed ( En) is not equal to the kinetic energy, EK ± 5 per cent, then the test data must be examined to determine the cause of this error.

       Figure 1
       Design of impactor[8]

       Figure 2
       Impact Top

       Figure 3
       Aluminium honeycomb orientation

       Figure 4
       Dimension of aluminium honeycomb cells

       Figure 5
       Design of the back plate
       Front View

       Figure 6
       Attachment of backplate to ventillation device and trolley face plate

       Figure 7
       Staggered pitch for the back plate ventilation holes

       Top and bottom back plate flanges

Note: The attachment holes in the bottom flange may be opened to slots, as shown below, for ease of attachment provided sufficient grip can be developed to avoid detachment during the whole impact test.
Figure 8

       Figure 9
       Ventilation frame

       The ventilation device is a structure made of a plate that is 5 mm thick and 20 mm wide.  Only the vertical plates are perforated with nine 8 mm holes in order to let air circulate horizontally.

       Side View

Annex 5 - Appendix 1
Force-deflection curves for static tests
       Figure 1a
       Blocks 1 & 3

       Figure 1b
       Block 2

       Figure 1c
       Bock 4

       Figure 1d
       Blocks 5 & 6

Annex 5 - Appendix 2
Force-deflection curves for dynamic tests
       Figure 2a
       Blocks 1 & 3

       Figure 2b
       Block 2

       Figure 2c
       Block 4

       Figure 2d
       Blocks 5 & 6

       Figure 2e
       Blocks total

Annex 6
Technical description of the side impact dummy
              1. General

              1.1.  The side impact dummy prescribed in this Regulation, including the instrumentation and calibration, is described in technical drawings and a user's manual.[9]

              1.2. The dimensions and masses of the side impact dummy represent a 50th percentile adult male, without lower arms.

              1.3. The side impact dummy consists of a metal and plastic skeleton covered by flesh-simulating rubber, plastic and foam.

              2. Construction

              2.1. For an overview of the side impact dummy see Figure 1 for a scheme and the parts breakdown in Table 1 of this annex.

              2.2. Head

              2.2.1. The head is shown as part No. 1 in Figure 1 of this annex.

              2.2.2. The head consists of an aluminium shell covered by a pliable vinyl skin. The interior of the shell is a cavity accommodating tri-axial accelerometers and ballast.

              2.2.3.