Relative canopy size at altitude

[mr2mk1g 10]

I remember reading of an equation which corrolates air density with relative canopy size.

EG at 0ft my canopy is 170 square foot.
at 2000ft my canopy flys the same as a 160square foot canopy at 0ft.
(figures guessed for the purposes of the example).

Can anyone point me to a table/program or post the equation for me?

thanks

[vt1977 0]

Some useful info here Matt:

http://www.dropzone.com/cgi-bin/forum/gforum.cgi?do%3Dpost_view_flat%3Bsb%3Dpost_latest_reply%3Bso%3DASC%3Bpost%3D797163%3B=Previous+Thread

Someone posted the formulae (or a link to it) in that thread.

Vicki

[mr2mk1g 10]

Thanks,

I know there is an actual equation out there though which gives an acurate figure for the actual size.

I've qot quade's info on speed/density corrolation but I'm trying to figure out how big parachutes fly at different altitudes.

[wingnut 0]

what i learned from one of the #$%$ tests is that your canopy loses 10% wing eficency for every 3000ft you go up...

______________________________________
"i have no reader's digest version"