Wingsuit aerodynamics in Wing Suit Flying August 12, 2011 QuoteQuoteQuoteQuoteQuoteTry www.paralog.net/ppc/ Glide-ratio (without wind) is roughly max 2.5 (across all brands/top suits) if you look at the overal scores (avg instead of peak results) I would expect a bit more than 2.5 is possible with the huge suits we have today. And that is without transient effects or help from updrafts. The competition rules allow for diving before the measurement phase so we can only say the performance is at best what we get from there but normally lower. However, with today's suits being almost double in size to some from 5 years ago(phantom) in which people were getting close to 2.5, I think some of the best flights are already in the 2.7-3.0 range. Size of the suit shouldn't affect it. Lift/drag ratio (which depends on design, and skill of the flyer) determines it. In practice, it does. Since that is contrary to the accepted laws of fluid dynamics, you need to provide some evidence in support. This is a fairly common observation in the real world. No manufacturer has succeeded in making a smaller wing suit in area outperform a bigger suit from their line up. AFIAK, as of today, every single WS pilot(who has figured out how to fly their suit) is able to get better performance out of the bigger suit in that manufacturer's line up. Until, there is evidence in the real world that is contrary to the 'bigger suit from same manufacturer gives better performance'. I am going to stick to that thumb rule. P.S: I am not in your class, I am not too concerned about what I have to write in the final exam so you give me a better grade .