3mpire

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Posts posted by 3mpire

  1. Quote

    Just a guess on the system from watching the video but it looks like a heavier version of a hesitater loop.



    I wasn't familiar with what a hesitater loop was but from a dual hawk tandem manual i found via google, I think that is probably what it is:

    [inline loop.png]

    If i'm understanding this correctly, the bottom flap of the container has the loop go through the grommet and into/around a bight on the bridal which keeps the dbag/lines "contained" and the left-side rip cord releases the loop,,,?

    I'm just guessing, is that how a hesitater loop works?

    If you watch the landing it looks like his pilot chute is white but the spring loaded PC is black so I don't know if that means that the spring loaded pc when released by the left-hand ripcord deploys the main's PC as it detaches...? Or somehow it gets cinched down to the dbag and is close to the main rather than trailing behind?

    This is kind of a cool puzzle I'm just spitballing how it might work

  4. I have seen spring loaded pilot chutes--my student rigs when i got licensed actually were spring loaded pilot chutes with a rip cord, so I'm well aware of what it is lol. (it was static line out of a 182 if not being an AFF turbine baby gives me any more street cred with you :D:D:D)

    Maybe the screen shot is a bad example, because in the actual video you will see the PC launch but then it just hesitates. When I first watched it, I thought it was actually a malfunction--but after I watched it again it seemed that it was a planned thing, perhaps a delayed or two-stage release that pitches the wing up to allow for a cleaner main deployment.

    here is a link to the video, the interesting part i'm asking about is at around 45 seconds:

    http://abcnews.go.com/WNT/video/meet-jetman-15030489

    EDITED TO ADD:

    I found the original video with the deployment on YouTube:

    https://youtu.be/kSgrzMQv2Mc?t=270

    this clip is longer than the clip on ABC news and it looks like he does have a two stage deployment as it seems like his left hand reaches down after the spring PC is deployed and initiates deployment from the box man position.

    you also see what looks like a rip cord after deployment... so some kind of setup where the bridal is secured below the pilot chute by the ripcord until released?

    I'm guessing this is some kind of custom set up--kinda cool!

  6. If you have any choice in what time of day your jump(s) are scheduled, ask around if there are reliably bad times of the day to jump and avoid those.

    I would book a 9AM student jump and get fogged out a few weeks in a row before I figured out that it's always foggy in the morning so it was one of the worst student slots of the day.

    Other DZs sometimes have reliably windy conditions in the afternoon or whatever. Find out if anything like that exists at your DZ and plan accordingly.

  11. Quote

    The trick to skydiving is to get paid doing it



    Meh. Debatable. For me, the trick to skydiving was picking up one or two extra non skydiving jobs in addition to my day job so I could afford to jump and fly in the tunnel.

    Upside to this is you get to skydive on your own terms, and you're not beholden to an employee/employer relationship that dictates your passion.

    When you work on a DZ you are not your own man, and you make many sacrifices in order to get paid to be in the sport.

    For some, that's exactly the right decision. For others, like me, no way. YMMV

  16. Quote

    What if there was a device that had GPS and a Cellular capability, and it could detect a significant impact consistent with a fatal result, after which, it would call/text a number and transmit the GPS location along with an announcement of the hard landing?



    An interesting idea. It raises the question of battery life/power consumption, which you've touched on before earlier up thread.

    One thing I had been thinking about but hadn't mentioned yet is whether the device would be smart enough to go into a low power mode and/or turn on/off sensors as they are needed to conserve battery power.

    A GPS beacon is a more realistic example of something that would turn on when, say, it detects a landing that indicates likely severe injury or death.

    While cellular might be interesting depending on the terrain you're jumping over it might not help. A jumper went in on mt si in the cascade foothills after a helo jump and its possible/likely that cellular service wouldn't have been available anyway.

    What about something like radio transmitters (APRS)? I don't know what kind of energy hog it would be but perhaps a radio ping of the last known coordinates would last longer allowing for a longer window for a SAR group to locate it?

    edited to add: i know that APRS loses accuracy the lower you get to the ground but if you were to have a receiver in a helo that was flying a grid it would likely be able to detect a transmission.

  19. "...and with the auto facebook post feature, your family will know exactly how hard you've femured in before you do! our handy algorithm will show you relevant ads for local recovery centers and physical therapists while first responders are still stabilizing your shattered legs."

  20. http://www.ebay.co.uk/itm/SKYDIVING-JAVELIN-PARACHUTE-/151650615587?&_trksid=p2056016.l4276

    clickified and added image in case listing gets deleted:

    [inline $_57.JPG]

    listing reads:

    Quote

    JAVELIN SKYDIVING PARACHUTE

    WE DO NOT KNOW MUCH ABOUT THIS PARACHUTE - WE DO NOT KNOW HOW TO OPEN IT - TO BE ABLE TO RE-PACK IT TO SEE IF IT IS ALL INTACK

    WE ARE NOT SKYDIVERS

    THE BAG IS IN GOOD CONDITION, THERE ISNT ANY SPLITS OR RIPS IN IT - THE METAL WORK LOOKS GOOD

    ON ONE OF THE BUCKLES READS - MS22040-1 FC1196

  21. Quote

    I have a SA2 170 and have off-heading openings and end-cell closures on every jump-sometimes the openings are so off that it throws me into line twists. I have been researching SA2 170 opening's for a few weeks now because I was convinced it was my pack job that was causing it-obviously not :-(



    Off heading openings are common but line twists are absolutely not in my experience on my canopy. There are only two or three instances of line twists I've experienced in ~450 jumps on my sabre 2 and all of them were on wingsuit jumps and all of them were only 1-2 twists that were very easy to get out of as the canopy never seemed remotely interested in diving.

    If you are getting line twists it could be packing or body position that is adding the extra energy to spin you up.

    That said, if you aren't happy with it and you don't want to spend much time digging into the body position or packing angle, you can always find a different canopy to try and see how it treats you. However, if you have packing and/or body position issues, all canopies will respond to that, so it might be best to sort those two variables out regardless of what canopy you're on.

    It sounds like you have a local rigger, spend some time with them to look at your packing more. Talk to some folks about body position and ask someone with experience to watch you deploy to see if you're doing anything there.

    good luck!

  22. Quote

    LOL... Do you often make statements where in the beginning and mid way thorough the statement, you point out that you have no idea what you are talking about, but you are fairly confident that you are right? lol

    Are you in sales?? LOL



    :D:D:D:D:D:D:D:D:D

  24. Quote

    We already have data collectors for parachute flight data, and free fall data. Personally, I am not a fan of, shall I say, "non professional" jumpers trying to "collect data". A test jumper has to have a lot of discipline. By the very nature of such an activity, that is not manufacturer based, someone is trying to impress themselves or someone else by pushing the limits of either their own, or their equipment's capability, and that, more often than not, eventually results in someone getting hurt. "Hold my beer", or , "everyone watch this" comes to mind when I hear of someone wanting to be able to "collect data"..



    You know in my early twenties someone showed up at our regular drinking hole with a pocket brethalyzer -- first time anyone from my crew had seen one that wasn't attached to a police officers arm. The result was a casual night of beers and pool turned into a competition to see who could "win" with the highest score. Needless to say if the idea of the pocket brethalyzer was to help you make responsible decisions it fell a little short that night :S