Forums: Skydiving: Gear and Rigging: Re: [RiggerLee] Canopy operning forces: Edit Log

JohnSherman  (D 2105)

Sep 25, 2012, 8:47 PM

Views: 1797
Re: [RiggerLee] Canopy operning forces

It would be better to say dynamic pressure not ambient.

I mean Ambient not Dynamic pressure. Dynamic pressure "Q" is the force on the bottom skin. Which is the product of speed and density. The internal pressure is equal to the surrounding atmospheric pressure which has no increase due to speed. Its whatever the barometer reads at that point. The top skin has a reduced pressure because of the circulation of flow. Think of it as the inside being neutral with the outside being a battle between Newton and Bernoulli. Newton on the bottom and Bernoulli on the top.
"Q" never gets past the bow wake.

(This post was edited by JohnSherman on Sep 25, 2012, 8:51 PM)

Edit Log:
Post edited by JohnSherman () on Sep 25, 2012, 8:51 PM

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