I hope you guys don't mind my coming into the conversation. My son is the inventor of the Shuttle T Lock and the President of Tightpoint. There is a very good reason for the shape of the broadhead. My uncle, Dr H T Sumsion was one of the scientists who was involved in the design of the space shuttle. A search on his name will explain some of the work he did for NASA at Ames Space Research Center. He encouraged my son to use that shape in developing a new broadhead for archers. The unique shape of the blades is the reason for the flight characteristics. The lazy S shape is called an Ogee wing. It creates a vortex at each end of the blade whichcreates extremely stable flight characteristics at slower speeds. The shape would not have been possible without the knowledge my son had in creating complicated molds and then the knowhow in molding with high strength stainless steel powder. He has a degree in mechanical engineering from Cal Poly and his molding experience came from many years in advanced telecom design.Hope this bit of info is of interest to you. I watched the development of this idea over sometime. My son is very much a perfectionist and an avid archer. His brother, my youngest son, who is also an engineer, both spent a lot of time on this product. A couple of years of testing and field performance have proven the Shuttle T Lock on big game animals to be a very lethal projectile.
Jim