howardwhite 6 #1 October 12, 2007 Well, o.k., it's easy. But what's missing from this picture, and what does that suggest about roughly when it was published? HW Quote Share this post Link to post Share on other sites
Zing 2 #2 October 12, 2007 Ah ... the Rogallo parawing minus the OSI. I'd guess that one is vintage late 60s/early 70s.Zing Lurks Quote Share this post Link to post Share on other sites
jonstark 8 #3 October 12, 2007 It was in a bag! There's no line wrap OSI. Lines are all the same color too. Must have been early on in the development. jon Quote Share this post Link to post Share on other sites
JohnRich 4 #4 October 12, 2007 QuoteAh ... the Rogallo parawing minus the OSI. What's an "OSI"? A slider? I notice two pilot chutes. And risers about 5 feet long! Quote Share this post Link to post Share on other sites
JSBIRD 1 #5 October 12, 2007 QuoteQuoteAh ... the Rogallo parawing minus the OSI. What's an "OSI"? A slider? I notice two pilot chutes. And risers about 5 feet long! An OSI is an Opening Shock Inhibitor. I used to jump a Delta II that was so fucked up, it took 3 MA1's to drag it out and deploy. BASE359"Now I've settled down, in a quiet little town, and forgot about everything" Quote Share this post Link to post Share on other sites
Zing 2 #6 October 12, 2007 The OSI is the acronym for Opening Shock Inhibitor. Basically, it was, depending on who made it, a 4-6 inch wide piece of webbing a couple feet long that used Velco to close it around the lines. As you packed, the OSI was wrapped around each line group as the canopy was stacked prior to putting it in a bag. The color-coded lines were to clue the jumper as to which lines went into each wrap of the OSI. OSIs predated sliders by a few years.Zing Lurks Quote Share this post Link to post Share on other sites
Beatnik 2 #7 October 12, 2007 It looks like an Irvin Eagle. A predecessor to the Delta II. I would guess around 66-67. Quote Share this post Link to post Share on other sites
JerryBaumchen 1,451 #8 October 12, 2007 The Irvin Eagle is what I would say also. And the two pilot chutes makes me think that might be an Army Team jumper. JerryBaumchen PS) Irvin actually got a TSO or their version of this type of canopy. Quote Share this post Link to post Share on other sites
howardwhite 6 #9 October 12, 2007 Obviously way too easy... From an ad by "Irvin Para-Space Center" of Glendale, CA in the April, '67, Parachutist. "IRVING'S(sic) PARAWING, the newest and most advanced canopy in our modern era, based on the most reliable and proven principles..... is now ready!!! "L/D 2.5 - 1.0 "Toe-down at 10 F.P.S." Yours, with sleeve, for $349.95. Dunno about the Army team part. Two pilot chutes were fairly common, in my experience, in the MA-1 days before manufacturers started making bigger pilot chutes. HW Quote Share this post Link to post Share on other sites
howardwhite 6 #10 October 14, 2007 See Beatnik's photos in the Bill Cole thread here for some pictures of Delta II canopies with the OSI clearly visible dangling from the bottom. HW Quote Share this post Link to post Share on other sites
dpreguy 14 #11 October 14, 2007 Whatever it is, it is not a Rogallo Para Wing. Only took one glance to tell me that. The Rogallo had fewer, (hence larger) panels throughout, and looked "puffier" than the one pictured. Also, every picture of a Rogallo I've ever seen had a checkerboard pattern. OK, I realize that you can't go by colors, but... I was around when they were being jumped, but can't remember actually seeing one in the air. QuoteI am not at the loft where my Poynter 1 is located. There is probably a picture of it there. Apparantly the one in the picture has been correctly ID'd, so no need. Quote Share this post Link to post Share on other sites
howardwhite 6 #12 October 15, 2007 QuoteWhatever it is, it is not a Rogallo Para Wing. Well, the name "Rogallo" (after its inventors) is rather generically applied to canopies (as well as kites and hang gliders) having this shape. So it may not resemble what you remember, but I think it's fair to refer to it as a Rogallo wing (even though Irvin did not, at least in this ad.) HW Quote Share this post Link to post Share on other sites
dpreguy 14 #13 October 15, 2007 Correct on that. Give the designer his due. The Irvin versionl apparantly never got anywhere. (not that parawings were very widely used either.) I never understood why parawings needed the opening inhibitors in the first place. Obviously they did, otherwise the inhibitors wouldn't have been deemed necessary. But; why would a parawing open any harder than a round? It is one surface, and "kinda" the same as a round - cups air and has long lines. Obviously it must have had a dangerously hard opening shock, necessiating crative minds to invent something to slow it down. Not that I really care much, but I was always curious as to why they would open so hard, just because it was kinda triangular instead of round. I saw and handled, kinda in disbelief, Quotethe old velcro wraps and decided to leave that one to the experimentors. Thankfully, the ram air parachutes came on the scene. Quote Share this post Link to post Share on other sites Jim_Hooper 4 #14 October 15, 2007 Don't know why they opened so hard, but I made a jump on one in 1970 and still remember eating my boots about half a second after pulling. There were stories of folks separating ribs from sternums on those things. Hoop Quote Share this post Link to post Share on other sites Beatnik 2 #15 October 15, 2007 Both my Delta II and Dactyl can be real show stoppers. They may cup air and are single surfaces but I don't think they fill like a round. A round will fill up with air from top to bottom and require a fairly large volume of air. A parawing doesn't really have that ability. My guess, the air required is much less and therefore opens quicker. This is just my take on it. Quote Share this post Link to post Share on other sites JerryBaumchen 1,451 #16 October 15, 2007 Hi, About '67 or so I was talking with Scotty Hamilton and he had just done a few jumps on the Irvin canopy, the one that they had TSO'd. He said that he pulled immediately off the step and the thing hit him like a ton of bricks; the hardest opening he had ever experienced. And that was with a sleeve, JerryBaumchen Quote Share this post Link to post Share on other sites Niki1 1 #17 October 15, 2007 I think it opened hard (very fast) because it had such a short profile. It was only 3 & 1/2 feet ((I don't think 4') from skirt to the top when you were side packing it. It didn't have to travel through much air to inflate. The same difference as a 22 ft. Featherlite and a 22 ft. Tri-Conical.Most of the things worth doing in the world had been declared impossilbe before they were done. Louis D Brandeis Where are we going and why are we in this basket? Quote Share this post Link to post Share on other sites rapter 0 #18 October 15, 2007 I'm glad you guys got this shit figured out by the time I started jumping,................... Only the good die young, so I have found immortality, Quote Share this post Link to post Share on other sites Krip 2 #19 October 16, 2007 Quote I'm glad you guys got this shit figured out by the time I started jumping,................... Like the Nova canopy. The more exprienced (older) we get we see hstory repeating itself. If it's not the gear, it's the folks flying the stuff. Old fart joke: Who says skydivers are stupid we invented a whole new way to kill ourselves Hook turns. WAG: I think people trying to do hook turns (not swooping) was responsiable for more death's over the years than trying out the latest and greatest canopies. Quote Share this post Link to post Share on other sites howardwhite 6 #20 October 16, 2007 Just to emphasize the point that Rogallo wings came in a variety of sizes and shapes, here's another one; it was usually referred to as a "flexwing." HW Quote Share this post Link to post Share on other sites howardwhite 6 #21 October 16, 2007 And a couple more, of the Pioneer version... HW Quote Share this post Link to post Share on other sites howardwhite 6 #22 October 16, 2007 And finally... -- The Golden Knights version -- The Delta II ad Both from Parachutist July, 1969 HW Quote Share this post Link to post Share on other sites Join the conversation You can post now and register later. If you have an account, sign in now to post with your account. Note: Your post will require moderator approval before it will be visible. Reply to this topic... × Pasted as rich text. Paste as plain text instead Only 75 emoji are allowed. × Your link has been automatically embedded. Display as a link instead × Your previous content has been restored. Clear editor × You cannot paste images directly. Upload or insert images from URL. Insert image from URL × Desktop Tablet Phone Submit Reply 0
Jim_Hooper 4 #14 October 15, 2007 Don't know why they opened so hard, but I made a jump on one in 1970 and still remember eating my boots about half a second after pulling. There were stories of folks separating ribs from sternums on those things. Hoop Quote Share this post Link to post Share on other sites
Beatnik 2 #15 October 15, 2007 Both my Delta II and Dactyl can be real show stoppers. They may cup air and are single surfaces but I don't think they fill like a round. A round will fill up with air from top to bottom and require a fairly large volume of air. A parawing doesn't really have that ability. My guess, the air required is much less and therefore opens quicker. This is just my take on it. Quote Share this post Link to post Share on other sites
JerryBaumchen 1,451 #16 October 15, 2007 Hi, About '67 or so I was talking with Scotty Hamilton and he had just done a few jumps on the Irvin canopy, the one that they had TSO'd. He said that he pulled immediately off the step and the thing hit him like a ton of bricks; the hardest opening he had ever experienced. And that was with a sleeve, JerryBaumchen Quote Share this post Link to post Share on other sites
Niki1 1 #17 October 15, 2007 I think it opened hard (very fast) because it had such a short profile. It was only 3 & 1/2 feet ((I don't think 4') from skirt to the top when you were side packing it. It didn't have to travel through much air to inflate. The same difference as a 22 ft. Featherlite and a 22 ft. Tri-Conical.Most of the things worth doing in the world had been declared impossilbe before they were done. Louis D Brandeis Where are we going and why are we in this basket? Quote Share this post Link to post Share on other sites
rapter 0 #18 October 15, 2007 I'm glad you guys got this shit figured out by the time I started jumping,................... Only the good die young, so I have found immortality, Quote Share this post Link to post Share on other sites
Krip 2 #19 October 16, 2007 Quote I'm glad you guys got this shit figured out by the time I started jumping,................... Like the Nova canopy. The more exprienced (older) we get we see hstory repeating itself. If it's not the gear, it's the folks flying the stuff. Old fart joke: Who says skydivers are stupid we invented a whole new way to kill ourselves Hook turns. WAG: I think people trying to do hook turns (not swooping) was responsiable for more death's over the years than trying out the latest and greatest canopies. Quote Share this post Link to post Share on other sites
howardwhite 6 #20 October 16, 2007 Just to emphasize the point that Rogallo wings came in a variety of sizes and shapes, here's another one; it was usually referred to as a "flexwing." HW Quote Share this post Link to post Share on other sites
howardwhite 6 #21 October 16, 2007 And a couple more, of the Pioneer version... HW Quote Share this post Link to post Share on other sites
howardwhite 6 #22 October 16, 2007 And finally... -- The Golden Knights version -- The Delta II ad Both from Parachutist July, 1969 HW Quote Share this post Link to post Share on other sites
