https://www.sciencedirect.com/scienc...75389211006924
yet this study shows drag dropping from .28 to .24 with a 6 degree angle. wowzers
https://aia.springeropen.com/track/p...20-00054-7.pdf
this study shows a drop of about .01 though, which is still an improvement
https://link.springer.com/chapter/10...030-86446-0_56
this one says 15 was their best angle. dont see test results for anything below 10 sadly
https://www.semanticscholar.org/pape...6c12216c5bb314
5 degrees for this one dropping .08 cd. crazy crazy
https://dergipark.org.tr/tr/download...le-file/533658
drag also reduced...