velo90
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Everything posted by velo90
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Skydiving is one of the safest risky sports
velo90 replied to pkasdorf's topic in Safety and Training
And there you have it in a nutshell. significantly potentially deadly Now explain to me how something that is "significantly potentially deadly" can safe? I leave Ron and elfanie to their own conversation -
It's sorta like a follow up on Kallend's signiture I like it
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They deleted one of the threads as I was browsing through it. Wanted to go to the next page and up came a "you are not authourised to view this page" message One word of warning, if you annoy the greenies to much, they complain to the reddies and before you know what has happened, you are barred from posting anything.
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Skydiving is one of the safest risky sports
velo90 replied to pkasdorf's topic in Safety and Training
We will keep having them as long as we keep taking on new students. It's a normal phase they all go through. Stage 1. Scared shitless Stage 2. Survived a few jumps - hey It's quite safe! Stage 3. Seen enough of the shit that happens - It's dangerous and not safe. There are probaly other stages. I am willing to admit that I went through the "hey it's safe" stage, but now I know better. Some things can not be taught, they have to be learnt first hand. -
thanks
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www.skydivingfatalities.info ???
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No, that if definately not the reason. I think the reason is that the more experienced folks are not blinded by their enthusiasm for the sport. They have seen a lot more things go wrong than the newbies. Some of the bad things are "hidden" from newbies. Don't forget the fatalities are not only manifestation of the dangers. There are non-fatal accidents as well, many of which are not ever reported. I have never seen so many people being carted off in ambulances before I got into this sport. I am not just worried about dying, I am also worried about the nasty injuries I am likely to get before I leave the sport.
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Skydiving is one of the safest risky sports
velo90 replied to pkasdorf's topic in Safety and Training
I am voting "no" on this one. I have absolutely no data to back this up but I have a feeling that Formula 1 racing ( the stuff that Schumacher does) is safer. Dave Like who the hell is Michael Schumacher? - Kelel01 -
Just how many people live in the US? Dave Edited to add : maybe that was your point
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I'll re-read em again . I initially thought that when I entered an exit separation of zero the program spewed out gunk. I know you don't accept the 45 degree theory, but what was the 45 degrees on the chart? I made a post that I thought was funny but after looking at what was presented a bit longer I realised what was going on. Sincere apologies if you thought I was knocking you! And to my question - "what can you knock Kallend for" - It was a rhetorical question! I don't want answers. Now can a moderator lock the thread before anything gets out of hand
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I never believed the 45 degree rule anyway. I was a bit stupid in posting before I realised what the program was showing It was never intended as a knock either, but I guess it could be interpreted that way. But now you've got me interested. What can you knock Prof Kallend for? Dave
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Ok, here's the thread you are probaly talking about. Wierd math puzzle I don't where the book is though. Dave
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To quote Winsor :- What part of flinging yourself bodily at the Earth from a couple of miles up strikes you as "safe? Dave
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I am reading the book at the moment. It's called "Denken in Wahrscheinlichkeiten". Ohh , I forgot, I am reading it in German, you will probaly want the English version. Dave
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Intentional cutaways: anyone forced to use 3rd (last) canopy?
velo90 replied to skydiverek's topic in Gear and Rigging
Are you not risking destroying the canopy by doing this? I saw a sabre after a lineover malfunction and that had burn holes all over it. Dave -
oopppps... I get it now But I did not find that feature documented in the notes on the program. Dave
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It has been debated and debated in the S&T forum. People kept asking where did you learn about the 45 degree rule for spotting. I now have the damming evidence of who put this idea into circulation. It was Kallend I was playing around with his freefall simulation program and look what it spat out! See the 45 degree rule to the left
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I have indeed spent a lot of time trying to figure out what is going on. Exactly! All I wanted to say was air speed at exit time (edit: I mean the air speed of the aircraft) was not the sole parameter in calculating exit interval. And thankfully you brought ground speed into the discussion. How many skydivers do you know that have this understanding? Blue ones Dave
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[replyExactly right again. And if one parachutist is in the 80kt layer, and the other one (who has opened) is in the 20kt layer, they will be moving away from each other at 60kts (assuming the layers change suddenly.) Errr... does that not mean they will be moving towards each other at 60 kts?
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Sorry, I forgot to answer the quiz Each Vladi ball would deploy in the same spot. After deployment, they have 8 seconds to fly away on their parachutes before the next one deploys. Dave Edited to add: No they won't collide.
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I would contend that after the 1st one deployed at 3000 ft, the second parachutist would deploy in exactly the same spot, but 8 seconds later. Of course, the 1st parachutist has had 8 seconds to fly away before the 2nd one arrives. Dave
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As I said in the other thread, you can setup the parameters to cancel out ground speed , or you can set them up to cancel out air speed. If you want to educate people, give them the whole story. Dave
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Yes. Good. Are we agreed that if the winds at exit altitude (13,000 ft) are say 50 kts, and they drop to 0 kts at 5000 ft. you cannot calculate exit seperation based purely on airspeed? While the balloon example shows that ground speed counts for jack shit when it comes to seperation, the space ball example shows that air speed is not the answer either. I just hope that people will take the time to figure out what is going on. Dave
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Can anyone see a relationship between the Saturday Quiz and the Sunday Quiz ?
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It is a very windy day at the dropzone. Well at least at 13,000 ft. The winds are blowing at a constant 80 knots. The wind speed on the ground is 20 knots. Because of the wind most people decide they don't want to jump, so we decide to do an experiment. We fly up to 13,000 ft and fly into the wind at 80 knots. The pilot confirms this as our ground speed is now zero. We now throw out a whole bunch of space balls, with an exit seperation of 8 seconds. What will the horizontal seperation of the balls be when they hit the ground?