Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - Cd*A vs. Equivalent Flat Plate Drag (EFPD)

gone-ot · 05-15-2011, 06:14 PM

...for "flat" surface, roughly:

PSI = (MPH^2)/56500

...and:

Force = 0.0042*A*(V^2) = A*(V^2)/238

100 MPH = 42 lb/ft^2 = 0.17699 PSI

05-15-2011, 06:14 PM	#2 (permalink)
gone-ot ...beats walking... Join Date: Jul 2009 Location: . Posts: 6,190 Thanks: 179 Thanked 1,525 Times in 1,126 Posts	...for "flat" surface, roughly: PSI = (MPH^2)/56500 ...and: Force = 0.0042A(V^2) = A*(V^2)/238 100 MPH = 42 lb/ft^2 = 0.17699 PSI