Andy9o8 0 #26 December 1, 2014 JerryBaumchenHi Lee, QuoteWhen were the first AAD's made? IMO this is getting into splitting hairs. I only considered those made specifically for sport use. Back in the '60's, Gary Patmor was doing a lot of work modifying some military openers for sport useage. They were available but really never did catch on. For an AAD, Steve Snyder is the man. Jerry Baumchen Didn't the Russians have a simple and pretty reliable AAD which was basically a wind-up timer.. wind it up like a music box, insert the safety pin attached to a static line connected to the plane... Jumper away pulls the pin, the winder unwinds for, say, 10 seconds and it activates on the main. .... ? Quote Share this post Link to post Share on other sites
skydiverek 54 #27 December 1, 2014 Andy9o8***Hi Lee, QuoteWhen were the first AAD's made? IMO this is getting into splitting hairs. I only considered those made specifically for sport use. Back in the '60's, Gary Patmor was doing a lot of work modifying some military openers for sport useage. They were available but really never did catch on. For an AAD, Steve Snyder is the man. Jerry Baumchen Didn't the Russians have a simple and pretty reliable AAD which was basically a wind-up timer.. wind it up like a music box, insert the safety pin attached to a static line connected to the plane... Jumper away pulls the pin, the winder unwinds for, say, 10 seconds and it activates on the main. .... ? KAP-3, developed in the 1930s, I believe. Quote Share this post Link to post Share on other sites
JerryBaumchen 1,047 #28 December 1, 2014 Hi Andy, Quote Didn't the Russians have a simple and pretty reliable AAD which was basically a wind-up timer As Bartek says just below your post. Although it was sort of a military AAD first, then fitted to sport gear. And, again splitting hairs, I only considered the stuff available here in the good ole US of A. Jerry Baumchen PS) Who knows, maybe the Bolivians had one before Steve Snyder developed his. Quote Share this post Link to post Share on other sites
SkySpice 0 #29 December 1, 2014 chuckakersLeonard Morehead - Bryan, Texas Leonard invented a process dubbed "Leonardizing" in which a tired old F-111 canopy can be given a second life with a coating he developed. He charged $1 per square foot and it worked. Well... I saw a number of those tired old Leonardized canopies blow up on opening shortly after the treatment. That tired old fabric just couldn't take the stress of being zero-porosity again. Quote Share this post Link to post Share on other sites
SkySpice 0 #30 December 1, 2014 Andy9o8***Leonard Morehead - Bryan, Texas Leonard invented a process dubbed "Leonardizing" in which a tired old F-111 canopy can be given a second life with a coating he developed. He charged $1 per square foot and it worked. Did it differ much from saturating it with Scotchgard or silicon spray? He kept his formula a secret. But if you looked up the Mil-Spec for zero-porosity nylon, you could see all the ingredients, if not the proportions of each in the mixture. He would hang up the canopy, and then spray it with the liquid mixture using a paint sprayer. Quote Share this post Link to post Share on other sites
dpreguy 14 #31 December 1, 2014 I think Jeff Johnston get the credit for actually inventing the over the shoulder "pro pack" method; but as to the naming of it as "Pro Pack"... I defer to the other posters, although I suspect that was Jeff Johnston too. Before that we all 'flat packed'. Quote Share this post Link to post Share on other sites
chuckakers 370 #32 December 1, 2014 Andy9o8***Leonard Morehead - Bryan, Texas Leonard invented a process dubbed "Leonardizing" in which a tired old F-111 canopy can be given a second life with a coating he developed. He charged $1 per square foot and it worked. Did it differ much from saturating it with Scotchgard or silicon spray? Yes, by a big margin. This stuff made the fabric behave like extra crispy zp. He sometimes had to tweak sliders to accommodate changes in opening characteristics after treatment. As far as I know there were never any major issues with treated canopies.Chuck Akers D-10855 Houston, TX Quote Share this post Link to post Share on other sites
keithbar 1 #33 December 2, 2014 skydiverek******Hi Lee, Quote Didn't the Russians have a simple and pretty reliable AAD which was basically a wind-up timer.. wind it up like a music box, insert the safety pin attached to a static line connected to the plane... Jumper away pulls the pin, the winder unwinds for, say, 10 seconds and it activates on the main. .... ? KAP-3, developed in the 1930s, I believe.is this what the Air Force Academy uses on the main for their first jump students? just wonderingi have on occasion been accused of pulling low . My response. Naw I wasn't low I'm just such a big guy I look closer than I really am . Quote Share this post Link to post Share on other sites
mark 102 #34 December 2, 2014 keithbaris this what the Air Force Academy uses on the main for their first jump students? just wondering USAFA uses FXC-12000 on student mains. Mark Quote Share this post Link to post Share on other sites
riggerrob 558 #35 December 2, 2014 Hank Asquito (sp?) curved pin George Quilter - direct bag deployment George Quilter - spiral spring pilot chute Quote Share this post Link to post Share on other sites
stayhigh 2 #36 December 2, 2014 RSL? who did that?Bernie Sanders for President 2016 Quote Share this post Link to post Share on other sites
jerolim 7 #37 December 2, 2014 KAP 3 had 2 modes.Mode 1) You set activation altitude to 4000 meters, and it will pull ripcord (spring loaded main), after 5 seconds when pin is removed. Pin was usually connected to aircraft's static line anchor point with long line. Mode 2) You set activation altitude to (let's say) 800 meters, you can remove pin in plane, it will count down to 1 second, and stop. Then you can jump, and after falling below 800 meters, KAP will continue counting for 1 second and pull your main ripcord. Quote Share this post Link to post Share on other sites
erdnarob 1 #38 December 2, 2014 You're right, however as I wrote it, Domina Jalbert didn't have in mind an airfoil to be used as a parachute. Thanks for your list. For Bill Booth now, in 1975 at Kendall Miami Glide Airport DZ, I tried, on the ground only, his new piggyback system. See the picture taken by Bill Booth himself. This rig didn't have already the three rings but instead a fork release system. See the little yellow tabs (near the connection between risers and harness) to be pulled laterally for cut away purpose. You can also see the belly pocket for the throw away PC and the special reserve handle.Learn from others mistakes, you will never live long enough to make them all. Quote Share this post Link to post Share on other sites
dpreguy 14 #39 December 2, 2014 Invented the RSL?- don't know, but the "Stevens System" was the earliest system that was well known. A nylon strap was external and went to the belly mounted reserve handle. Who Stevens was, I don't know, but would be easy to ferret out Quote Share this post Link to post Share on other sites
wmw999 2,120 #40 December 2, 2014 Stevens was Perry Stevens, a California jumper and rigger in the 60's. It was called the Stevens Cutaway System in those days. Wendy P.There is nothing more dangerous than breaking a basic safety rule and getting away with it. It removes fear of the consequences and builds false confidence. (tbrown) Quote Share this post Link to post Share on other sites
JerryBaumchen 1,047 #41 December 2, 2014 Hi Wendy & Walt, QuotePerry Stevens, a California jumper and rigger in the 60's At that time ( mid 60's ), Perry was working for Security Parachute Co. Actually, the CrossBow rig had an RSL and was on the market before Perry got his setup going for students with gut packs. Jerry Baumchen Quote Share this post Link to post Share on other sites
wmw999 2,120 #42 December 2, 2014 Now that I didn't know. Among many other things Wendy P. There is nothing more dangerous than breaking a basic safety rule and getting away with it. It removes fear of the consequences and builds false confidence. (tbrown) Quote Share this post Link to post Share on other sites
darkwing 4 #43 December 3, 2014 erdnarobSteve Snyder is the inventor of the slider for Ram Air parachutes. This is contrary to my memory. I recall many years ago, before Snyder died, that it was widely acknowledged that Yarbenet invented the slider and I don't recall Steve Snyder disagreeing. I freely admit my memories may be flawed. Even if you are saying Snyder adapted it from rounds to squares that is not my recollection. -- Jeff My Skydiving History Quote Share this post Link to post Share on other sites
accumack 13 #44 December 3, 2014 Snyder didn't invent the slider but he did pilot chute controlled reefing of squares top reefing and bottom reefing along with the OSI wrap on the delta 2 parawing. Quote Share this post Link to post Share on other sites
riggerrob 558 #45 December 3, 2014 The first patent for a slider was circa 1945 (Floyd Smith?). But it was several more decades before Ballistic Recovery Systems figured out that a slider needed vents to work with a round parachute. Garry Douris told me about some of the "E ticket" rides he had while testing BRS prototypes with a Cessna 150. Gary said that they figured out the round canopy within less than a dozen test drops, but it took dozens more to perfect the deployment system: vented slider. Quote Share this post Link to post Share on other sites
talon2 0 #46 December 3, 2014 SOS (Single Operation System) David Smith , Parachutes Australia.Sydney Australia. Quote Share this post Link to post Share on other sites
highspeeddirt 0 #47 December 3, 2014 in 1970 , Steve Snyder came up with a single point release for conventional rigs with a belly wart. his design was rather complicated using several cables .it never went past the prototype stage however. Earlier, in the early 60's there was an article in Skydiver Magazine about a jumper who had converted 2 shot capewells that could be released with the pull of a handle mounted on the chest strap. Quote Share this post Link to post Share on other sites
Deyan 31 #48 December 3, 2014 RiggerLee Who did do the first tuck tabs? As I recall Javelin as an example was already using then on their riser covers when Talon still had Velcro riser covers. If we are talking only about riser cover tuck tabs, I think the first one was the Atom from 1989. I could be wrong. Keep 'em coming "My belief is that once the doctor whacks you on the butt, all guarantees are off" Jerry Baumchen Quote Share this post Link to post Share on other sites
Deyan 31 #49 December 3, 2014 jerolim KAP 3 had 2 modes.Mode 1) You set activation altitude to 4000 meters, and it will pull ripcord (spring loaded main), after 5 seconds when pin is removed. Pin was usually connected to aircraft's static line anchor point with long line. Mode 2) You set activation altitude to (let's say) 800 meters, you can remove pin in plane, it will count down to 1 second, and stop. Then you can jump, and after falling below 800 meters, KAP will continue counting for 1 second and pull your main ripcord. I hope you don't mind if I correct some info. Yes, KAP-3 or PPK-U AAD has 2 modes. Time and altitude. In order to use the time mode, you have to set the altitude scale higher than the altitude you will be jumping from. Any altitude higher will do the trick. We were setting them on 3500 m. and 2 seconds for the PEP's. That way, the aneroid will not block the trigger. You can set that timer anywhere between 5 and 2 seconds. Once you leave the plane and the safety pin has been pulled, after the selected time passes, the trigger releases the spring. If you want to use the altitude mode, you have to set the altitude scale under the altitude you will be jumping. Once you leave the plane ( and the safety pin has been pulled) the timer will start counting down from 5 seconds, but the aneroid will stop it somewhere bellow 2 seconds ( for most units that will be between 1,2-1,5 seconds). Once you pass the selected altitude (ASL), the aneroid will release the timer,and in about 1,2-1,5 seconds, the trigger will release the spring. ( about 36 kg pull force ) I guess I still have a paper copy of the original manual in Russian if you are interested "My belief is that once the doctor whacks you on the butt, all guarantees are off" Jerry Baumchen Quote Share this post Link to post Share on other sites
talon2 0 #50 December 4, 2014 Not the same game .....SOS was patented for use on piggybck systems .......Frapp Wraps then 3 ring Quote Share this post Link to post Share on other sites