HortlundWell, you're essentially right in that if you want to jump off a building, you definitely would want a proper BASE rig on your back.
Student rigs have a spring loaded pilot chute. A ripcord goes through the closing loop and when the ripcord is ripped out, the springloaded pilot pops out. On
normal skydiving gear you have a small pouch on the bottom of your container (called BOC for Bottom of Container, duh
). You could potentially just take the pilot out and hold it in your hand and then jump off a building.
This would still be a bad idea because normal canopies tend to 'snivel' when they open i.e a staged deployment intentional (or sometimes unintentional) to reduce the opening shock. It's not uncommon to need between 50-200 meters to get full deployment. Potentially more if you're not at terminal velocity.
BASE chutes are reinforced and packed in a different way - they're not placed in bags and the lines are IIRC stored differently. They're usually large (230sqft and upwards), very reliable and produce on-heading openings consistently. And they open HARD and fast, as in arse kicking hard and fast compared to regular canopies according to a friend of mine. With normal canopies it's not uncommon to have opening that twist between 45-180 degrees - SLAM into the building if you jumped off one
.
As you say, a BASE rig is simpler and less things can go wrong with it. It has to be, since there ain't a spare.
You know surprisingly much for a whuffo Hortlund - are you SURE there isn't a skydiver somewhere inside you, eagerly waiting to jump out?
. We could even do some RW together. I must warn you though; I am primarily a free flyer and my belly flying RW skills aren't very good
DavidPTCheck out this
linkfor a discussion on emergency parachute system. And yes, it'd need to be repacked every 3-6 months to be safe. You'd need skydiving training to use it safely though - it's all in the thread. Problems would be maintaining a good body position, tracking away from the building, judging the downdrafts/updrafts etc etc. Hard enough to pull off safely by experienced BASE jumpers from non burning buildings. Still, having a chance beats not having one