BLOODHOUND SSC HAVE GONE TO GREAT LENGTHS TO PROVIDE SIMPLE ANSWERS TO TECHNICAL QUESTIONS
Bloodhound SSC have prepared a series of tutorials to explain some of the technical terms that affect the performance of the vehicle. DRAG is a common expression used among racing car enthusiasts, tutorial #14 provides a good explanation. If your particular questions are not answered, there will be a facility for you to contact a member of the team.
BLOODHOUND DETAILED TECHNICAL EXPLANATIONS