View Single Post
Old 07-07-2022, 04:38 PM   #1 (permalink)
Master EcoModder
aerohead's Avatar
Join Date: Jan 2008
Location: Sanger,Texas,U.S.A.
Posts: 15,392
Thanks: 23,486
Thanked 6,974 Times in 4,453 Posts
Automotive parachute equivalency

This is for the truly twisted!
And for simplicity, I'm basing the following on the old-timey, standard military parachute I jumped with in the Air Force. Cd 1.35.
If you know your Cd and Af, then you know your CdA.
To get the diameter of a parachute of equivalent drag as your vehicle, use:
[ ( square-root of ( CdA / 1.35 ) / pi ) X 2 ] = diameter

Photobucket album:
  Reply With Quote