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Old 07-07-2022, 04:38 PM   #1 (permalink)
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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

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Old 07-07-2022, 04:45 PM   #2 (permalink)
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Acura TSX - '06 Acura TSX
90 day: 28.24 mpg (US)

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90 day: 47.32 mpg (US)

Big Yeller - '98 Dodge Ram 2500 base
90 day: 21.82 mpg (US)

Prius Plug-in - '12 Toyota Prius Plug-in
90 day: 57.64 mpg (US)

Mazda CX-5 - '17 Mazda CX-5 Touring
90 day: 25.04 mpg (US)

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So if I ever find myself vehicle transport plane that is catastrophically failing, I should hop into the hummer for the ride down.
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Old 07-11-2022, 10:05 AM   #3 (permalink)
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'HUMMER'

hopefully, they'll have the H-1. Cd 0.70.
try to get it to fall, tail first, with all the doors open.
'Gravity, it's not just a good idea, it's the law! ' ( as seen inside a HOOTER's restaurant in Lewisville, Texas )

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