Planform Factor of Spectre

[Chris-Ottawa 0]

Hey everyone,

I recently got my new Spectre and can't for the life of me find out what it's planform factor is. I've read it's not rectangular, but definately not considered elliptical either. I was wondering if anyone know the planform factor, or can give me a better idea to look. I've searched the forums, google, PD etc.

Thanks in advance!

"When once you have tasted flight..."

[NWFlyer 2]

I've heard the Spectre referred to as tapered or semi-elliptical.

Hope that helps.

Edited to add a link to a thread that discusses some of the terminology used to describe canopies and how there's really no standard definition, just common usage.

http://www.dropzone.com/cgi-bin/forum/gforum.cgi?post=1930085

"There is only one basic human right, the right to do as you damn well please. And with it comes the only basic human duty, the duty to take the consequences." -P.J. O'Rourke

[Chris-Ottawa 0]

Hey,

Thanks for th correct wording. That's what I've heard too but what I'm curious is if there is a number or even a way to figure it out like what Aerodyne Uses:

Pilot Planform 6
Mamba Planform 22

"When once you have tasted flight..."

[councilman24 37]

Planform is an equation and parameter that was invented by Aerodyne and AFAIK not adopted by any other manufacturer. If I was at home I could look up the equation from the 2003 Symposium. I don't know if it's on their website or not. The main answer is unless your an Aerodyne "cult member" use other parameters to compare canopies from other manufacturers.

further information: The panform calculation is on the aerodyne web site, under support, leaning topic at the upper left right side. Couldn't copy a link. But, the information you need is probably not usually published by other manufacturers. The number of cells taperd, the chord of the center cell and the end cell. Have fun.

I'm old for my age.
Terry Urban
D-8631
FAA DPRE