INSTRUMENTED DUMMY

 One SIDH3, serial number 28, was placed in the driver seat. The SIDH3 was supplied by the NHTSA and was calibrated by a NHTSA-approved dummy calibration facility before shipment to the FOIL. The SIDH3 is a combination of the standard SID torso with the neck and head replaced with a Hybrid III dummy's neck and head. The neck bracket was removed from the SID and replaced with the neck bracket from a Hybrid III. This provided the necessary bolt pattern and alignment for a Hybrid III neck and head assembly. It was noted that the dummy’s head had a slight twist about the neck. This may have been a result of the attachment between the neck and head or between the neck and head assembly and the dummy’s torso. Figure 2 is a sketch of the modifications made to the SID. The dummy was shipped with the necessary hardware for assembly. Tools at the FOIL were used to assemble the SIDH3. Clothing consisting of white thermal underwear was purchased and placed on the dummy, along with a pair of brown hard leather shoes. Eighteen extension cables were supplied with the SIDH3. The extensions allowed for installation of connectors necessary for attachment to the FOIL data acquisition system without removing the standard dummy connectors. The transducers within the dummy were of the half bridge type and therefore completion resistors were soldered into the connectors at the data acquisition system interface.

The morning of the test, the SIDH3 was positioned in the driver seat in accordance with FMVSS 214. The data acquired from the OSCAR was used to place the dummy H-point at the correct location. The driver seat was set in the center position with the seat back at 18.0° from the vertical. Using FMVSS 214 as a guide and alignment tools supplied by the NHTSA, the SIDH3's feet, legs, thighs, pelvis, torso, and head were positioned just before test. While the dummy was positioned in the test vehicle, a tent was used to prevent direct sunlight from striking the dummy. The dummy is best used in a specific temperature range of 20.5° C to 22.2° C. Temperature measurements, using a thermocouple positioned near the dummy’s head, were taken in 15-min intervals during the hour prior to the test. Pertinent SIDH3-to-interior longitudinal and lateral clearance measurements are shown in figure 3 and figure 4. The SIDH3 was belted in the driver seat using the pickup truck’s seatbelt restraining system. Several different color chalks, listed in table 3, were put on the side surfaces of the dummy to determine the contact points between the dummy and the vehicle's interior.