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Any consensus on zp foreskin and heading performance? Specifically the blackjack? Canopy to be jumped primarily slider off.

Definitely wouldn't call it a consensus, but on the 50 jumps I got on my 260BJw/ZP I have never had an off heading more than 20 degree's. Except once on a marry poppins from the perrine, 180, but I watched it spin and then let go....lol

Anyone else want to share their experiences?

I think it promotes faster pressurization, which in general probably increases heading performance. Hopefully other will have more experience to share with you.

Bad name syndrome?

i'd say ZP opens a bit slower (not noticeable when it's only 1/3 of the topskin). i mean, that's why the entire canopy isn't ZP, right? having that ZP nose is just going to give you a more solid wing once open. that portion that is ZP is a large part of your Mean Aerodynamic Chord (part of the wing that creates lift). that's the same reason you get better glide and flare with it. i'd say the most noticeable difference is going to be when you have two canopies, one being CUS and the other one not having CUS. as you put more jumps one them, the CUS canopy will perform better, longer (like when they both have 150 jumps on them). am i wrong?

Is this really true?


I thought the part of the wing that creats lift was the entire part of the wing, not just one part, what does the rest of the wing do?

Most of the lift is generated at the most curved part of the airfoil--around the B lines. In a sense, the rest of the canopy is there to provide a smooth transition to/from this part. That's why you can put ZP on only the front portion of the canopy, and get most of the aerodynamic benefits.

Michael

Ah-ha!
Thanks.

i wouldn't lie to you dude.

Sorry, Not saying that you were, I was just saying that with a mild form of surprise.

front 1/3rd is so that you get the advantages of easy packing and on heading openings close to that of a F111 canopy, and the benefits of ZP to provide better lift from the main lifting portion of the canopy.

just say it...you hate me!

I got nutt'n but LOVE for ya baby

I Would say your wrong. Ask the hard core guys doing ultra low shit who've got dedicated canopies made of entire ZP *top* for the very reason that air escapes less because of the less(Z) porus(P) material.

Ask your self this at full on terminal with an all ZP top and unvented vs. all F111 top unvented what's gonna spank you more? Just think about it?

All though I've met some tough guys that say "Ah it ain't all that bad, don't be a puss and jump my tarp!"

Anyway just my thought, based and people I've met?

On personal not I've noticed a marginaly quicker opening with my ZP frontskin canopie vs. The F 111's I've jumped , again just my thoughts on My experience at terminal tracking and WS.

Ah!

the reason only the forward 1/3 is ZP is aerodynamics.

about 50% of lift is generated on the first 25% of an airfoil, so ideally this should be the cleanest part of an airfoil. the ZP is in front and only in front because this increases the L/D of the airfoil.


there was even some fighter jet experiments that used a vacuum to suck air through tiny holes in the entire airframe to decrease the boundary layer drag, very cool stuff.


I cannot imagine opening being a factor.

word.


http://en.wikipedia.org/wiki/Boundary_layer

NO!