IMGR2 0 #1 May 4, 2003 QuoteI sent a bunch of canopies for testing out to the houston crew last week (eric butts, craig "catfish" stanley, bryan moffett, & ramon rionda) included was a cobalt 39 (to be used in systems we are building under contract to the Department of Defense), and a biplane canopy (built for fun). Just got back a tape of footage that is pretty mindblowing. for starters they jumped the biplane, nice deployment, looks too wierd flying.... but what really made me smile was eric under a comp cobalt 120 and catfish under a cobalt 39 doing 2 stacks ! the canopy is dead stable and producing so much lift that in partial brakes it can match a canopy 300% bigger in full flight. The video almost looks doctored as the 39 is about the size of a beach towel with a wingspan barely bigger than my height. i was hoping to post pics but unfortunately the video is vhs and i can only frame grab digital video.... sincerely, dan atair aerodynamics www.extremefly.com Just thought ya'll might appreciate these. Bryan Quote Share this post Link to post Share on other sites
newshooter12 0 #2 May 4, 2003 looks like they could hide that thing under a jacket with a not so big container/harness. But who would jump w/a reserve of similar size? Quote Share this post Link to post Share on other sites
AggieDave 6 #3 May 4, 2003 You know, if I didn't know that this was true, I'd say it was photoshop, it just looks absolutely unreal! Although it hasn't been and may not be attempted at this time, do you think that you and Eric could land them safely? --"When I die, may I be surrounded by scattered chrome and burning gasoline." Quote Share this post Link to post Share on other sites
Jethers203 0 #4 May 4, 2003 How were the openings on those things? What were they loaded at? Did Catfish just use his Dolphin container? What was the plan after they were finished dicking around? What altitude did they cutaway at? Just wondering. Quote Share this post Link to post Share on other sites
pilotdave 0 #5 May 4, 2003 Quote You know, if I didn't know that this was true, I'd say it was photoshop, it just looks absolutely unreal! Maybe it was. Here's the cobalt 39 in formation with the cobalt 24. Dave Quote Share this post Link to post Share on other sites
amir1967 0 #6 May 4, 2003 Quote Quote You know, if I didn't know that this was true, I'd say it was photoshop, it just looks absolutely unreal! Maybe it was. Here's the cobalt 39 in formation with the cobalt 24. Dave It looks to me that the green one is 22 not 24 good work anywayAM67 Quote Share this post Link to post Share on other sites
SkydiveMonkey 0 #7 May 4, 2003 How is this deployed? There doesn't seem to be a pilot chute____________________ Say no to subliminal messages Quote Share this post Link to post Share on other sites
QuickDraw 0 #8 May 4, 2003 Was the 39 landed ? -- Hope you don't die. -- I'm fucking winning Quote Share this post Link to post Share on other sites
andy2 0 #9 May 4, 2003 [QUOTE]How is this deployed? There doesn't seem to be a pilot chute [/QUOTE] I imagine if they trim it down any further the parachute would be the PC! --------------------------------------------- let my inspiration flow, in token rhyme suggesting rhythm... Quote Share this post Link to post Share on other sites
nightjumps 1 #10 May 4, 2003 So, some quick math... A 42 inch Base Pilot chute (42 x 3.14) = 131.88 square inches; 10.99 square feet. So the Cobalt 24 is about 2 1/2 times larger than a base pilot chute. Is that about right ?!?!?! Quote Share this post Link to post Share on other sites
mikeat10500 12 #11 May 4, 2003 QuoteHow is this deployed? There doesn't seem to be a pilot chute] Free Bag...I'm guessing....don't want to drag even a collapsed PC behind that thing.----------------------------------- Mike Wheadon B-3715,HEMP#1 Higher Expectations for Modern Parachutists. Quote Share this post Link to post Share on other sites
SkydiveMonkey 0 #12 May 4, 2003 Or the Pd style freebag-on-a-rope could work.____________________ Say no to subliminal messages Quote Share this post Link to post Share on other sites
pilotdave 0 #13 May 4, 2003 Area is pi * r^2. In that case, its (3.14*21^2) = 1385.44 in^2, which equals 9.62 ft^2 (you have to divide by 12 twice because the units are square inches, not inches). But yes, the answer comes out nearly the same... a 24 would be 2.5 times larger. I think the vx46 is the smallest canopy landed, right? Thats only 4.8 times bigger than the pilot chute. Dave Quote Share this post Link to post Share on other sites
SkydiveMonkey 0 #14 May 4, 2003 still kinda comparing apples to oranges though, as one produces lift instead of drag.____________________ Say no to subliminal messages Quote Share this post Link to post Share on other sites
nightjumps 1 #15 May 4, 2003 Quote (you have to divide by 12 twice because the units are square inches, not inches). That's what I did wrong. Thanks Dave. Inner voice <...separate piece of paper separate> Quote Share this post Link to post Share on other sites
skycat 0 #16 May 4, 2003 Quote Was the 39 landed ? Hmmmm....lets see I would load that at ~3:1 just like Derek loads his 60, so I guess technically if some tiny person with big balls and a lot of skill wanted to land it, it could be done. Fly it like you stole it! Quote Share this post Link to post Share on other sites
skycop 0 #17 May 4, 2003 What a sissy, he's flying in half brakes, I'm not afraid to fly my 190 in full flight!!!!!! "Just 'cause I'm simple, don't mean I'm stewpid!" Quote Share this post Link to post Share on other sites
IMGR2 0 #18 May 5, 2003 We actually deployed it out of a zip-lock bag. Cut it away at around 6k. Catfish is loading somewhere around 6, I load it around 4.3. Dan threatened me not to land it, but as soon as he authorizes it, I will definitely let all of you know. I can't wait. Oh, and btw PilotDave we actually have a 25 as well. It spins up too fast, as soon as you deploy, just a little harness input spins it up QUICK. And yes it is flying at half brakes, in order to keep up with a Cobalt 120. I will tell you when he lets up on the brakes, that thing is GONE. Can't explain how fast that thing really goes, guess when we get the data logger on it with the INS/GPS onboard we'll have all that real technical mumbo jumbo that everyone likes to read. Bryan Quote Share this post Link to post Share on other sites
