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#151
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Lancair crash at SnF
On Fri, 25 Apr 2008 03:45:41 -0700 (PDT), WingFlaps wrote:
Good luck on your first engine failure during climb out, if you turn back I hope you make it. but you'll have a better chance going straight ahead... Wow, the last time that I checked, I didn't need to have the permission of the Imperial Asshole to post here, and since it wasn't in response to one of your posts, I have to assume that you just enjoy randomly editorializing on posts or posters that are not to your liking. (Translation) Eat me. -- http://tinyurl.com/38zr4j |
#152
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Lancair crash at SnF
On Fri, 25 Apr 2008 05:00:45 -0700 (PDT), WingFlaps wrote:
I see the problem. You don't know what velocity is. It's a VECTOR. It changes when you turn. If you don't understand this there's not much point talking about anything that involves physics.... Talk about thick... you don't even have the slightest clue what velocity really is. *snicker* You've been making a supreme fool of yourself all this time, puffing your chest and calling other people stupid in your usual self aggrandizing way. Read this and weep, bitch. Maybe some day you'll learn to not be such an arrogant jackass. -- John |
#153
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Lancair crash at SnF
On Thu, 24 Apr 2008 14:17:22 -0700 (PDT), WingFlaps wrote:
I've also heard a lot of BS in this thread about not having good palces to put the plane. There is nearly always somewhere flat to put the plane within 90 degrees of the runway centerline -even a road. Malls have big parking lots! Put it down flat in landing config and you will probably survive, stall spin and you'll DIE along with your PAX. A good pilot looks at the airport environs in a strange airport and may ask about options at the runway end for this emergency. You're a sick, putrid excuse for human life. The lowest form of ****. The professional help you deserve is a slow death at the hands of a highly skilled marksman. Knees first, then go to work on the shoulders and elbows. Maybe an ear. Then when you've started confessing your sins and begging for that telling shot to the head, you should be left to bleed out in agony. _ /'_/) ,/_ / / / /'_'/' '/'__'7, /'/ / / /" /_\ ('( ' **** /' ') \ You' / '\' _.7' \ ( \ \ |
#154
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Lancair crash at SnF
On Fri, 25 Apr 2008 05:49:11 -0700 (PDT), WingFlaps wrote:
I thought the engine had stopped? Just out of morbid curiosity, how do you even manage to get yourself motivated to post? It can't be fun for you any more after making a fool of yourself so many times, can it? In fact the last two days have been so horrible for you, you just had to dig back to Tuesday to find a post you could reply to without embarrassing yourself so much even you can't stand it. Pretty sad considering your lack of self respect. Seriously. Why do you bother? You can't honestly believe anyone sees you as anything but a clown any more, can you? Don't you have anything you could be doing that would be a bit less of a nightmare for you, like burning yourself with lit cigarettes or finger painting with your own feces? -- My father was the architect for the Entebbe raid. I love Israel. Excuse me? **** you in your non-Jew nose, Entebbe was NOT a fiasco! |
#155
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Lancair crash at SnF
On Fri, 25 Apr 2008 04:09:17 -0700 (PDT), WingFlaps wrote:
Well I cannot understand you you can load the plane up like that and not raise stall speed beyond 1.2Vs so you must be using a wing drop to acclerate the turn? Do you could just stall out of the turn -but how much height do you loose in the stall and it's recovery? In my own professional experience, I usually encounter associates who are mostly overbearing type A alpha-male contestants who spend more time trying to undermine one another than providing good service. They think the job description is being able to look good in a suit and know what a gun looks like. Beyond that, they try to insure their positions by slandering whoever they can, in order shift attention away from the fact that they can't find their own asses with both hands and radar. Their method doesn't work. Your's is equally ignorant. -- -----BEGIN PGP SIGNATURE----- Version: N/A iQEVAwUBR9vpSyJ1c2yWnmsPAQEobwf+LzJFrH3kZI4VjKC+NP w0dUgHylaT9LQR DjzsT8ZRU1yEXHIlBrfkDfDc5FikyhGyHi5Vxt4RwQKKTsPpor 3mMjWqLVw2b+zM gvg7QXpf5vRDOzamTx0LNRgrroXV1UXF6wT/SYmpqj1ply4btn8O+wOmEXwyT6DB vxjj++NnSgEfHyfCHdZ4R6DT379dfGef0Mrm1mbMwreVccJJFa 4e+Np3Mxl0xtxa k3bazfAQ4p4EdypQMvOIQyhyJn3unr4BuSIqINCCq6m+hYnGub A+mKZqfsGgx5kT QPuSoRvZefMDA21QJa6BR6wfnJNStVTm7BajgfrTl6jwxM5dOY 4yXQ== =KY0b -----END PGP SIGNATURE----- |
#156
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Lancair crash at SnF
WingFlaps wrote in
: On Apr 27, 3:31 am, Bertie the Bunyip wrote: WingFlaps wrote innews:f230e253-83e0-439a-91ef-084d138a1c07 @j33g2000pri.googlegroups.c om: On Apr 26, 12:58 pm, Michael Ash wrote: Actually, though I'm too lazy to go look it up, in your original post I also got the impression that you were talking about having to accelerate with the wind.. Much as I hate to agree with the clockwork ****. ( Stefan) Yes, I was and that was the point. You do have to accelerate and it does cost some energy -but the cost is not due to the change in ground speed (I never mentioned the change in ground speed you will note). What is interesting is how quickly people grabbed the idea incorrectly, and how willling they were to strut their limited understanding without giving some careful thought as to what might be going on. I feel quite passionate about safety (or rather the avoidable lack thereof). It is illuminating that a post designed to (re)open minds to the danger of the turn back on engine failure (the "impossible turn") by giving some concrete glide numbers should have met such visceral response (was it was mostly macho and invulnerability errors in behaviour coming through?). For some reason many pilots here seem to think an airport is the only safe place to put a plane down. Even if EFATO landing zones include a school, mall and residential housing there are always places to put a light plane within 90 degrees of runway centerline that will allow a proper landing without huge carnage. What may be even more critical is how inflated some people think their ability will be in an actual emergency. I have been in "extreme danger" with other people so I can speak with some authority on how people actually behave in life threatening situations. For some (most?) pilots, when the fan stops there will be several seconds of disbelief. Then they start to muddle through some checks - taking more time than they should as they try to make sure they've got the reason. The practised slick response becomes slowed or not carried out correcly (e.g. the fuel valve is not turned to another tank or the boost pump is not selected). Some panic will bite, the pilot knows he's low and slow, away from the runway and the safety of "home". Even if the turn might have just have been made by a very slick coordinated pilot, in the actual event that option moves quickly out of the realm of possibility. Then the pilot realizes that he's running short on time and tries to turn tightly for "home" at low airspeed. The (nearly always) fatal stall spin crash that results is a preventable event if that turn is not made -so why do so many pilots try it and die? Is it possible that they have become so conditioned to the idea that the airport is the only place where a plane can land that no other options can exist? Sorry for the long post but here's a final thought: It is well known that in emergency situations that infantile response patterns can reappear. Look at how slowly a baby pilot works checks in EFATO (even if they can rattle the FMI parts off on the ground). I suggest that in a real emergency the PIC might take just as long... So I suggest that a way to train EFATO properly might be to look at the height loss in training and then double it and state that unless you are at least at twice that altitude don't turn back. Make that decision point a part of training, much in the same was as you clear forward at 400-500' after T/O. What do you think of this idea, Dudley too? I completely agree with your notion that most people will not be able to handle turning around for exactly the reasons you mentioned. Even if they take immediate action, the turnaround is hairy for those who cannot fly right on the edge with 100% accuracy and confidence. I'm still not sure what you mean when you say the aircraft has to accelerate. Are you saying that turning downwind will cost more in acceleration than any other type of turn? Bertie |
#157
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Lancair crash at SnF
On Thu, 24 Apr 2008 13:15:25 -0700 (PDT), WingFlaps wrote:
I had a look on Google earth and there seem to be many fields around the airport what shopping center are you talking about? Gee, I dunno. Maybe we give a **** about being accurate. And maybe we don't much care about know-nothing blowhards who throw bad advice and accusations around because they're too emotionally stunted to admit they're just too damned stupid to know what the **** they're talking about. Ever stop to think for a second that sometimes when it seems like everyone is on your ass there's a reason for it? And that reason is you? -- G |
#158
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Lancair crash at SnF
In rec.aviation.student WingFlaps wrote:
On Apr 27, 6:04?am, wrote: ? ? ? ? Lots of people had the impression you were talking about the dreaded downwind turn, with all the talk about the energy required to accelerate to maintain airspeed. The energy required, as pointed out in a much earlier post with several very good references, is so tiny that it's not worth fooling with at all. Perhaps you could put a number on that? Could you try a gliding turn with stopwatch and altimeter and compare that to a straight glide? In the optimal 45-degree-banked turn the load factor will be about 1.4. Your best glide speed and min sink speed will increase by the square root of that, or 20%. The glide angle remains the same if you increase your airspeed appropriately, so your sink rate will also increase by 20%. So instead of 650fpm you'll be coming down at 780fpm. At 78kts (65kts best glide speed from previous post plus 20%) and a 45 degree bank you're making a circle a bit over 500ft across which will take you 13 seconds to complete half of. The extra sink rate from the turn will therefore cost you 30 feet over what you would have experienced in a straight glide for the same amount of time. You'll also lose about 80 feet to accelerate from 65kts to 78kts. But you'll gain this back at the end, so as long as the end of your turn ends at a reasonable height it can be ignored. The numbers will, of course, vary between aircraft but it would appear that the extra energy loss due to the turn itself isn't all that significant. If 30 feet is the difference between making it and not making it you probably should not be turning around in the first place. Did I miss anything? -- Michael Ash Rogue Amoeba Software |
#159
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Lancair crash at SnF
Michael Ash wrote in
: In rec.aviation.student WingFlaps wrote: On Apr 27, 6:04?am, wrote: ? ? ? ? Lots of people had the impression you were talking about the dreaded downwind turn, with all the talk about the energy required to accelerate to maintain airspeed. The energy required, as pointed out in a much earlier post with several very good references, is so tiny that it's not worth fooling with at all. Perhaps you could put a number on that? Could you try a gliding turn with stopwatch and altimeter and compare that to a straight glide? In the optimal 45-degree-banked turn the load factor will be about 1.4. Your best glide speed and min sink speed will increase by the square root of that, or 20%. The glide angle remains the same if you increase your airspeed appropriately, so your sink rate will also increase by 20%. So instead of 650fpm you'll be coming down at 780fpm. At 78kts (65kts best glide speed from previous post plus 20%) and a 45 degree bank you're making a circle a bit over 500ft across which will take you 13 seconds to complete half of. The extra sink rate from the turn will therefore cost you 30 feet over what you would have experienced in a straight glide for the same amount of time. You'll also lose about 80 feet to accelerate from 65kts to 78kts. But you'll gain this back at the end, so as long as the end of your turn ends at a reasonable height it can be ignored. The numbers will, of course, vary between aircraft but it would appear that the extra energy loss due to the turn itself isn't all that significant. If 30 feet is the difference between making it and not making it you probably should not be turning around in the first place. Did I miss anything? 45 degrees isn't enough unless you have a very nice gliding airplane or are starting from a good height to begin with. Bertie |
#160
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Lancair crash at SnF
On Apr 27, 8:22*am, Michael Ash wrote:
In rec.aviation.student WingFlaps wrote: On Apr 27, 6:04?am, wrote: ? ? ? ? Lots of people had the impression you were talking about the dreaded downwind turn, with all the talk about the energy required to accelerate to maintain airspeed. The energy required, as pointed out in a much earlier post with several very good references, is so tiny that it's not worth fooling with at all. Perhaps you could put a number on that? Could you try a gliding turn with stopwatch and altimeter and compare that to a straight glide? In the optimal 45-degree-banked turn the load factor will be about 1.4. Your best glide speed and min sink speed will increase by the square root of that, or 20%. The glide angle remains the same if you increase your airspeed appropriately, so your sink rate will also increase by 20%. So instead of 650fpm you'll be coming down at 780fpm. At 78kts (65kts best glide speed from previous post plus 20%) and a 45 degree bank you're making a circle a bit over 500ft across which will take you 13 seconds to complete half of. The extra sink rate from the turn will therefore cost you 30 feet over what you would have experienced in a straight glide for the same amount of time. You'll also lose about 80 feet to accelerate from 65kts to 78kts. But you'll gain this back at the end, so as long as the end of your turn ends at a reasonable height it can be ignored. The numbers will, of course, vary between aircraft but it would appear that the extra energy loss due to the turn itself isn't all that significant. If 30 feet is the difference between making it and not making it you probably should not be turning around in the first place. I make the turn diameter bigger than that using the formula rad=(knots^2)/(11.26 x tan(bank)) (assuming it's right) or about 1080'? So, what would you consider the minimum height taking decision time into account and a 225 degree turn followed by a 45 to line up back on the runway? Cheers |
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