Forums: Skydiving: Safety and Training:
Re: [billvon] Canopy Collision SDAZ 30 December 2016

 


Pendragon  (D 104102)

Mar 30, 2017, 6:16 AM
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Re: [billvon] Canopy Collision SDAZ 30 December 2016 Can't Post

Which is why it is always counterproductive to put freeflyers out after RW groups - the vertical separation between groups is massively reduced and so the probably of a collision is increased


Deimian

Mar 30, 2017, 6:35 AM
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Re: [Pendragon] Canopy Collision SDAZ 30 December 2016 [In reply to] Can't Post

Pendragon wrote:
Which is why it is always counterproductive to put freeflyers out after RW groups - the vertical separation between groups is massively reduced and so the probably of a collision is increased

But if you do it the other way around the horizontal separation decreases and belly flyers would be right on top of the freeflyers, which increases the chances of a collision way more than with a decent horizontal separation.


DJL  (D License)

Mar 30, 2017, 7:28 AM
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Re: [Pendragon] Canopy Collision SDAZ 30 December 2016 [In reply to] Can't Post

Pendragon wrote:
Which is why it is always counterproductive to put freeflyers out after RW groups - the vertical separation between groups is massively reduced and so the probably of a collision is increased

You're about a decade late on this being a settled issue. Vertical separation is of zero consideration because you cannot guarantee everyone's opening altitude. The separation and exit order between belly and freefly has more to do with freefall drift.

At risk of this thread drifting it's better to search other threads on this forum that have explained this to death.

Edit: Link to the program and graphics that have become a staple of Safety for a while now:
http://mypages.iit.edu/...d/skydive/#resources
http://www.omniskore.com/freefall_drift2.html


(This post was edited by DJL on Mar 30, 2017, 7:53 AM)



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