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#61
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On 3/12/04 2:05 PM, in article 40521816$1@darkstar, "Mark James Boyd"
wrote: Where's the stall warning horn? On the Cessna, where it belongs. Don't even think about putting one in a sailplane. Soaring ought to be about flying the aircraft, not just monitoring the government-mandated distractions. The thing would either be activated during most thermaling, or have such a close tolerance as to give no useful warning to those who would most need it -- and they are expensive. Would you recommend flashing lights on the panel, a speaker tone to compete with the vario, or both? Perhaps you would also like to incorporate a stick-shaker? Jack ~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~ |
#62
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At 20:54 12 March 2004, Adp wrote:
My response to this is, 'don't do that'. Do not be distracted from your primary goal of getting on the ground safely. Kill the cow, screw the crops, go between the trees, the hell with the pattern ---- do not stall and you will walk away. Allan I agree, except for one thing; if you kill the cow,the cow will also kill you. I hit a deer at night with a Buick; no glider would have survived it. |
#63
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It might be useful to look at small airplane accidents, since they DO
have stall warning horns. I'm under the impression that stall/spin accidents are a big cause of fatal accidents also. Do you have any numbers? I used to own and fly a Cessna 340. That 340 was a great airplane but I noticed in very rough conditions only in landing configuration I could hear the stall warning horn. I think it was caused by the stall warning tab being lifted by the action of a gust or the motion of the airplane to the gust. The point being, a horn may wake you up, but there are better ways of determining if you are in a stall. The first time I heard this horn I was landing at Bishop, CA on a very turbulent day. My reaction was to look at the airspeed then to do nothing. It got my attention but I was not stalled and it was just a distraction. Fly the damn airplane for the given conditions. Yes, sometimes that means a left turn or a right turn and at different speeds. If you cannot do that please do everyone a favor and get more training until you are comfortable in either direction. |
#64
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#65
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Andreas Maurer wrote:
On 12 Mar 2004 12:05:42 -0800, (Mark James Boyd) wrote: Where's the stall warning horn? I'm still utterly baffled why there isn't a stall warning device on each wingtip? Is this really that much extra drag? Is it more drag than that caused by having to make a wing design that buffets before a full stall? There are gliders that are equipped with stall audio warnings. Most of these stall warnings have been switched off permanently because they were yelling all the time while thermalling. THe difficulty is getting a true stall warning, rather than an airpeed alert (even if it is adjusted to G loading). Other difficulties with the type Andreas mentions is it doesn't know when the spoilers are out, the flap position, or the bugs on the leading edge. -- ----- change "netto" to "net" to email me directly Eric Greenwell Washington State USA |
#66
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At 23:00 12 March 2004, Andreas Maurer wrote:
On 12 Mar 2004 12:05:42 -0800, (Mark James Boyd) wrote: Where's the stall warning horn? I'm still utterly baffled why there isn't a stall warning device on each wingtip? Is this really that much extra drag? Is it more drag than that caused by having to make a wing design that buffets before a full stall? There are gliders that are equipped with stall audio warnings. Most of these stall warnings have been switched off permanently because they were yelling all the time while thermalling. Bye Andreas In sailplanes the stall warning instrument is a little bit of grey matter fitted just behind the pilots eyes and between his ears Byeeeeeeeee Dave |
#67
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On Fri, 12 Mar 2004 15:20:09 -0800, Eric Greenwell
wrote: THe difficulty is getting a true stall warning, rather than an airpeed alert (even if it is adjusted to G loading). Other difficulties with the type Andreas mentions is it doesn't know when the spoilers are out, the flap position, or the bugs on the leading edge. Airspeed alert is one problem, but even if you get an AoA alert you'll be close to stall AoA very often if you are circling in a gusty thermal. And something that beeps all the time during a flight will not be taken seriously anymore after a short time. Bye Andreas |
#68
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Andreas Maurer wrote:
On Fri, 12 Mar 2004 15:20:09 -0800, Eric Greenwell wrote THe difficulty is getting a true stall warning, rather than an airpeed alert (even if it is adjusted to G loading). Other difficulties with the type Andreas mentions is it doesn't know when the spoilers are out, the flap position, or the bugs on the leading edge. Airspeed alert is one problem, but even if you get an AoA alert you'll be close to stall AoA very often if you are circling in a gusty thermal. And something that beeps all the time during a flight will not be taken seriously anymore after a short time. This could actually be an asset to the pilot: if the warning is heard often, it probably means the pilot is circling too slowly for best performance and should speed up. An airfoil that is stalling, even momentarily, is producing too much drag. For example, the newer airfoils, like the one on my ASH 26 E, have a larger separation between stall speed and best circling speed than the earlier airfoil designs. You can fly controllably slower than you should for best climb performance. This situation makes it easier to design a suitable AoA warning device than on the earlier airfoils. -- ----- change "netto" to "net" to email me directly Eric Greenwell Washington State USA |
#69
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Come on guys........
Wheel down ....stall warning on. Wheel up......Stall warning off. Simple. Ian |
#70
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Moral?
Don't land gliders in fields at night! Ian "Nyal Williams" wrote in message ... At 20:54 12 March 2004, Adp wrote: My response to this is, 'don't do that'. Do not be distracted from your primary goal of getting on the ground safely. Kill the cow, screw the crops, go between the trees, the hell with the pattern ---- do not stall and you will walk away. Allan I agree, except for one thing; if you kill the cow,the cow will also kill you. I hit a deer at night with a Buick; no glider would have survived it. |
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