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.