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#18
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In article . net,
d b wrote: I'm a bit miffed with the obtuse information about BRS chutes. Name one, just one, save done by a BRS chute in an airplane, or glider, that was NOT an ultralight or hang glider, and was done from an out-of-control situation. In article 402c2ce4$1@darkstar, (Mark James Boyd) wrote: In article , Andreas Maurer wrote: Not to mention the possible extremely high (220 kts) speed of a glider with a missing tail or wing. The deployment speed of the BRS of the Cirrus is limited to a pretty low speed (iirc 150 kts IAS). Several BRS saves were quite a bit faster than the "rated" system velocity. Like parachute repack recommendations and Vne, the velocity recommendations are primarily to protect the manufacturer from liability, and are generously safesided to be far within the actual limits of the equipment. LOL...if my glider is missing a tail or wing and the ASI is pegged, I'm gonna pull the BRS chute anyway. If it does shred, at least it'll make a nice easy to see marker on the splat point... As far as saves already happened, these things just ain't been around that long, and structural failures of gliders and planes are REALLY very rare compared to ultralights... So structural failure doesn't seem to be a big reason to put on a BRS. Inadvertent IFR, mid-air, control surface (spoilers, elevator) not hooked up, over unlandable terrain (15 knots impact is better than 40), unrecoverable spin, student holding stick back or forward in panic/suicide, etc. seem quite possible. Would I rather have a BRS with a more crashworthy cockpit vs a personal chute and flimsy cockpit? Personally, yes. Would I want both? Personally, no. Would I prefer one 6 year repack vs. repacking a personal chute 18 times? Absolutely... hmmm...I wonder how much the repacks cost (tightwad hat on) .......... In fact I just got off the phone with BRS, and asked them about repack of the 900 sealed canister, and they said it was $600 (every 6 years). You mail them the canister, then they mail you a repack... Looks like about even for repack price, but convenience seems a lot better than 12-18 repacks of a personal chute... Perhaps a lot of this is moot, because they're probably almost impossible to retrofit, and with most new gliders being motorgliders, the space isn't there, but for a new "pure" glider (sparrowhawk, AC-4, etc), it loks good on paper at least... |
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