7 and 9 Cell Differences

[skydiventom 0]

Where can I find information about the differences between 7 and 9 cells?
Live Well, Laugh Often, Love Much

[PhreeZone 20]

Here is a good place to start.
I want to touch the sky, I want to fly so high ~ Sonique

[skydiventom 0]

I guess I was look'n for something a little more technical...
Live Well, Laugh Often, Love Much

[PhreeZone 20]

Like what? You can get a 7 cell to do anything a 9 cell does. And you can do anything with certian 9 cells that it was thought only 7 cells could do.
As I'm sure you know, the main difference is the aspect ratio. A higher ratio will lead to improved proformance. For a detailed explanation of why, search for a past from RiggerRob about ellipticals. A lower aspect ratio will generally allow for a canopy to sink into a target better.
If you give some details on the technical details you want I'm sure some one cand find them for you.
I want to touch the sky, I want to fly so high ~ Sonique

[cobaltdan 0]

there are all types of 7 cell and 9 cell canopies...
with that said the only general statement you can make is that the greater the aspect ratio (span:chord) the better the glide ratio (how many feet horizontally foward you glide for every foot vertically you decend).
so 9 cell canopies can out glide 7 cell canopies.
(note: you can make a case for exception when comparing i.e. a badly designed (or old design) 9 vs a very good newer design 7.) but in short given equal standards 9 cell canopies will always out glide 7's (which out glide 5's...dont see many of those around anymore?).
sincerely,
dan
atair

[Watcher 0]

In my last rig, i had a 5 Cell 1982 GQ Securities X2Ten reserve, never had to use it, but i think it would have been interesting.
Jonathan

[udecker 0]

Jonathan - funny thing.... when I bought your rig, the first thing I did was trade up that reserve for a new Precision Aerodynamics Ground Zero canopy. I think "interesting" would've been a bit too interesting for me. ;-)
-Craig