In the current driver market, golf equipment companies have a tall task — make drivers that are even longer and more forgiving than the ones currently available. Making things more challenging is that two very important factors in driver design, aerodynamics and forgiveness, have a somewhat inverse relationship; a longer crown improves forgiveness, but it is also generally less aerodynamically sound.

The major issue is that as a driver head moves through space, air wants to leave the crown as it passes over the face. That increases drag and decreases club head speed, a bad thing for distance. For Callaway, solving this problem meant working with aerodynamics experts at Boeing

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