五千年(敝帚自珍)

主题:【原创】战场上的蒲公英(十一) -- 王外马甲

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家园 现在很多公司都提供300feet 大概90米左右的伞

可惜图片看不到

Despite a severe opening shock, the 1940s-50s Paratroopers were able to jump as low as 143 feet in training, and 250 feet in actual combat. This reduced the time under canopy and the wind blowing Paratroopers far apart from each other. I estimate at 250 feet, you would have 3-4 seconds for your canopy to open, then one second to check canopy, if its there you pull on your ruck release tab to lower your rucksack and then snap into a prepare-to-land position---you have 3 seconds before you land. Unlike some, I believe that if you saw no canopy at all above you at the end of your 4 count you could deploy a reserve in time to save your life, but this should be a reserve that's gas cartridge activated and integral to the back, not cluttering the front of the Paratrooper. With the T-10 family we went to the lines-opening first deployment sequence using a deployment bag to hold the canopy as the suspension lines first payed out in order to reduce the opening shock, but we paid for it in ALTITUDE, as you will see in the following pictures/descriptions. First we go into details of how the current T-10 series parachutes are configured and hinder a clean exit from aircraft.

外链出处

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