Jon O. Jacobson, Ph.D.,P.E.
Jacobson Engineering
"Bioengineering Design for Head and Neck Protection During Automobile Racing"

ABSTRACT

The death of Dale Earnhardt in an automobile race on February 18, 2001 was probably one of the most publicized events in the sport of automobile racing in recent years.  The investigation into the causes for his death in a collision of moderate severity has prompted the governing bodies of motor racing to begin mandating head and neck protection of competitive drivers. 

Prior to that time, several different devices had been in development that could be considered as restraints, straps or possibly a protective support like an exoskeleton.  Several of these will be discussed including the HANS, Hutchins, and D-Cell, showing the relative performance in relation to the biomechanics of exposure of the cervical neck when subjected to the collision forces that occur in motor racing. These studies are leading to the further understanding of the biological limits of trauma and are contributing to a better understanding of methods for increasing the safety of conventional automobiles.  (...And possibly, even though many people aren't talking, we may be able to infer something about the basal skull fracture that Dale Earnhardt suffered.)"

Dr Jacobson is a 1972 graduate of the University of Washington Mechanical Engineering Department and was one of the early participants in the emerging Bioengineering program when it was formed in the 1960's.  He is currently a Professional Engineer in private practice in Seattle.