kirrz 0 #1 June 14, 2006 I'm going for my A lic theory exam tomorrow and although I have all the answers filled out I am a little confused about the concept of drag on a canopy. I intended to go to the DZ last weekend and ask but I got sick and didn't make it.. so please can someone explain to me (in simple-ish terms) what is drag exactly? Cheers! Quote Share this post Link to post Share on other sites
labrys 0 #2 June 14, 2006 http://www.lerc.nasa.gov/WWW/K-12/airplane/drag1.htmlOwned by Remi #? Quote Share this post Link to post Share on other sites
AFFI 0 #3 June 14, 2006 Wow, an A lic theory exam? Souns like something one would have to study for. Where can I obtain a copy of this type of exam? Here in the states we have a somewhat differenct type of paperwork. Quote Share this post Link to post Share on other sites
dragon2 2 #4 June 14, 2006 I thought you guys had exams too? We have exams for A and B and a national exam for C which is quite a big deal, as by then you are a licensed skydiver who can make jumps without an instructor present, can arrange your own demo jumps, hire a plane, etc. ciel bleu, Saskia Quote Share this post Link to post Share on other sites
AggieDave 6 #5 June 14, 2006 Quote I thought you guys had exams too? We do. The A license is now a verbal exam, taken from the student progression end of section quizes. It doesn't have anything about drag on a canopy.--"When I die, may I be surrounded by scattered chrome and burning gasoline." Quote Share this post Link to post Share on other sites
kirrz 0 #6 June 14, 2006 If you go to the APF website (Australian Parachute Federation), under publications you should find a sample A lic exam.. else if there is the "Manual for the A license candidate" there, it is the in last few pages. It's a few pages long and has to be filled out in advance. Most of the answers aren't actually in the manuals they give us, we are meant to chat with skydivers at the DZ and ask them the questions. Thanks guys for the help!! Quote Share this post Link to post Share on other sites
bob.dino 1 #7 June 14, 2006 QuoteWow, an A lic theory exam? Sample A licence exam. QuoteSounds like something one would have to study for. Yup A Licence Manual, B Licence Manual, High Performance Canopy Manual, and the Operational Regulations. I think you get a copy of the PIA/PD Dual Square Report. To complete the A Licence exam, you have to read and understand these manuals, use some deductive reasoning, and ask instructors for information. Once you've filled out the exam, you have to attend a theory evening, and fill out another exam at the end of that. That's the procedure in Sydney, anyway. Quote Share this post Link to post Share on other sites
dragon2 2 #8 June 15, 2006 QuoteQuoteWow, an A lic theory exam? Sample A licence exam. QuoteSounds like something one would have to study for. Yup A Licence Manual, B Licence Manual, High Performance Canopy Manual, and the Operational Regulations. I think you get a copy of the PIA/PD Dual Square Report. To complete the A Licence exam, you have to read and understand these manuals, use some deductive reasoning, and ask instructors for information. Once you've filled out the exam, you have to attend a theory evening, and fill out another exam at the end of that. That's the procedure in Sydney, anyway. Love the lingo. "Don't be an ostrich" and what the heck is a bunnytail deployment system? ciel bleu, Saskia Quote Share this post Link to post Share on other sites
damion75 0 #9 June 16, 2006 QuoteI'm going for my A lic theory exam tomorrow and although I have all the answers filled out I am a little confused about the concept of drag on a canopy. Not sure that you got much of an answer on the actual question there! Funny enough I was looking at this the other day (when I was supposed to be working!) There are two types of drag primarily acting on a parachutist and their equipment: Parasitic Drag and (lift) Induced Drag. Parasitic Drag is simply caused by the effects of an object moving through a fluid (in this case air) and being resisted by it. This can only be reduced (as far as I know) by changing the object size or surface type (more shiny = more speed!) Induced drag is caused at the wing tips of your canopy by the forces which give it aerodynamic lift. Essentially the 'faster' air moving underneath your wing spills around the end and creates a vortex which 'sucks' your canopy back a little = drag. That's how I understand it anyway. Elliptical wings suffer less from this and it is also the reason for airliners to have winglets at the end of their wings, which disrupts the creation of the vortex. Perhaps this is why the Nitron has those little winglets too? HTH Frank.*************** Not one shred of evidence supports the theory that life is serious - look at the platypus. Quote Share this post Link to post Share on other sites
