KevinP 0 #1 February 1, 2011 Hi all, I started seriously reading the SIM today and found this: d. Use of the altimeter in freefall: (1) Skydivers freefall about 1,000 feet in the first ten seconds and 1,000 feet every 5.5 seconds thereafter. My question is, isn't this variable? I sorta understand terminal velocity (I comprehend the words when I read the definition, in other words), but there are the things about people wearing weight belts and others wearing certain suits to match the fall rate of another jumper. And isn't falling in a head-down position faster than a belly-to-earth orientation? I'm not nit-picking, I'm just curious. I want to KNOW the material, not just "get" it. Thanks! KevinSincerely, Kevin Quote Share this post Link to post Share on other sites
NWFlyer 2 #2 February 1, 2011 That's why it says "about." Much of what's in the SIM assumes a belly-to-earth orientation, but yes, even at that orientation there's a fairly wide range of speeds. But for a "rule of thumb" what's in the SIM is a good one."There is only one basic human right, the right to do as you damn well please. And with it comes the only basic human duty, the duty to take the consequences." -P.J. O'Rourke Quote Share this post Link to post Share on other sites
KevinP 0 #3 February 1, 2011 Okay. Cool. I read and re-read it. I saw the "about" referring to the first 10 seconds, then noticed the lack of "about" when referring to every 5.5 after. I just needed some clarification. Thanks!Sincerely, Kevin Quote Share this post Link to post Share on other sites
GLIDEANGLE 1 #4 February 1, 2011 Check out the text and table in SIM §6-3 for more on this topic. (it is brief) http://www.uspa.org/SIM/Read/Section6/tabid/169/Default.aspx#978The choices we make have consequences, for us & for others! Quote Share this post Link to post Share on other sites
KevinP 0 #5 February 1, 2011 Quote Check out the text and table in SIM §6-3 for more on this topic. (it is brief) http://www.uspa.org/SIM/Read/Section6/tabid/169/Default.aspx#978 Haha. Hadn't made it that far yet. Thanks.Sincerely, Kevin Quote Share this post Link to post Share on other sites
DBlank 0 #6 February 14, 2011 It varies a lot, one of the guys I do 2 way RW drills with some times can keep up with a slower sit on his belly but we go about 110 together, so there is an example of the wide range of speeds."Do you really want to take advice from the guy we call Tarmac?" Quote Share this post Link to post Share on other sites
