JerryBaumchen 1,077
That 'incident' (As it was told to me by someone who was there; they may not have seen the actual jump, though) is the one where one of the Golden Knights (on a style jump) took it quite low, apparently realized he was low & pulled the reserve. The pilot chute/bridle/reserve bag stripped and left the canopy in the container. The result was a fatality. This bag was an early Para-Flite with the butyl rubber 'O' rings. This caused (most of us believed at the time) Para-Flite to go to the Safety Stow.
That is the only case of reserve bag strip on a sport rig while used by a customer that I know of.
Hope this helps a little.
Jerry
QuoteAren't both of those a result of the line attachment points of the Raven reserves and not the reserve deployment system?
Derek
Id say both of these are due to opperating a reserve out side of its design limits.
The second fatality was not because of the landing, it was caused by the opening.
You're not as good as you think you are. Seriously.
UKFSDude 0
Marc
skydiverek 60
RMURRAY 1
QuoteThinner air = faster freefall speed (airspeed) = air inflates the canopy fatser.
=reason to avoid line dump on a small overloaded reserves.
pbla4024 0
Fido
UKFSDude 0
QuoteThinner air = faster freefall speed (airspeed) = air inflates the canopy fatser.
apologise for the slight thread hijack but if the air is thinner then the pressure and hence drag exerted on the canopy fabric will be reduced. For me it then only follows to reason that this would cause the canopy to open more slowly given all other factors (e.g airspeed, temperature, atmosphereic pressure) remain constant.
Ken
Any physics professors out there that would care to comment? With the math?
Orange1 0
QuoteFor me it then only follows to reason that this would cause the canopy to open more slowly given all other factors (e.g airspeed, temperature, atmosphereic pressure) remain constant.
But all other factors aren't constant. Kallend, who I understand is a physics prof, in this thread http://www.dropzone.com/cgi-bin/forum/gforum.cgi?post=1668217;search_string=density%20altitude;#1668217 says that your speed increases about 2% for every extra 1000' of altitude.
darnknit 0
pulling is cool. keep it in the skin
Orange1 0
Quotecan you guys start a high altitude deployment thread so that i can hijack it to find out if there are any incidents directly attributed to safety stow design?
sorry wonder if there any incidents directly attributed to thread drift?
rmsmith 1
QuoteI know it's been discussed before, but I haven't seen a good explanation on why it happens. You go faster, yes, that much we know, but why doesn't the "less air to fill the canopy" offset the extra speed?
In fluid mechanics changes in density are linear, but changes in velocity are exponential.
pbla4024 0
F=1/2*Cx*rho*v^2
Keep F and Cx and you see, that when you have half preasure (rho is linear with p), you velocity is 1.41 times higher.
Fido
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