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#31
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Stealth Pilot, ye manic homely swain, that butcher's cur is venom
mouthed, ye derogated: On Mon, 30 Jun 2008 17:27:56 +0000 (UTC), Bertie the Bunyip wrote: Stealth Pilot wrote in m: On Sun, 29 Jun 2008 18:48:29 +0000 (UTC), Bertie the Bunyip wrote: "Ken S. Tucker" wrote in news:874ec04d-d3fb- 447e- : On Jun 29, 6:09 am, Stealth Pilot wrote: ... the reason I asked the question was to point out that simulators work on a simplified model of the reality that real pilots are exposed to. people like mxsmanic seem utterly oblivious to the fact that their exposure to the simulator will never give them competent knowledge because all they are exposed to is a simplified model of reality. it is only exposure to the actual reality that will allow you to achieve competent knowledge. Yesterday, wife and I sim'd the Luna 3 mission to photograph the far side of the moon that the Ruskies did in 1959. We used trial and error but finally got it. Those poor SOB's used vacuum tubes and slide rules to "sim" the ballistics. if simulators dont get something as simple as the aircraft's shadow right can you trust that anything else they show you is right? I'd love to put Stealth Pilot on the top of a ballistic missile with a joy stick, and then have him execute the simple manuever of a lunar orbital return mission to earth. I'd be wearing a hard hat :-). Of course you would k00kie boi. Bertie I wasnt aware that alfoil hats were hard. have these buggers been using kevlar liners in them as well??? sims have a place in the industrial world but to prefer the sim to reality is just nonsense. barking mad nonsense! Stealth Pilot Well, we use 'em of course, but it's mainly because it's impractical to actually set a 757 on fire. Bertie I have a friend ****ing liar. -- Hammer of Thor: February 2007. Pierre Salinger Memorial Hook, Line & Sinker: September 2005, April 2006, January 2007. Official Member: Cabal Obsidian Order COOSN-124-07-06660 Official Overseer of Kooks & Trolls in 24hoursupport.helpdesk |
#32
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Stealth Pilot wrote in
: I have a friend who is part owner of a cherokee 140. ...the blandest aeroplane in history??? he spent hundreds of hours flying microsoft flight sim and a few other sims. fair dinks, one day he was out with partner owner in a gusting crosswind and almost lost the cherokee in a landing. partner's conclusion was that he landed the simulator because not once during the near prang did he apply rudder. scared the partner to his boots. turns out the sim setup at home doesnt have rudder pedals. my conviction is that sims used as a substitute for real flying are a bloody danger to all involved. they gradually replace the real skills with slow reacting putty. if you understand the body's processes of neurological tuning you will have no problem understanding why. Stealth(20 knot crosswinds from any direction ...not a problem) pilot To be fair, a lot of people who learned to fly in Cherokees don't use rudder in a crosswind. Mostly because they haven't been taught to. The Cherokee will tolerate landing in a crab more than most. In fact wheelchair pilots are allowed to fly them with a snap-on hand control that even people who rent can use. Just snaps in and out. The only restriction which has to be aded to the POH is a crosswind limit 2 knots lower. The wheelchair people aside, it's a sloppy way to land an airplane compared to using the wing down and riskier also. Bertie |
#33
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On Jul 2, 3:46 am, Bertie the Bunyip wrote:
To be fair, a lot of people who learned to fly in Cherokees don't use rudder in a crosswind. Mostly because they haven't been taught to. The Cherokee will tolerate landing in a crab more than most. In fact wheelchair pilots are allowed to fly them with a snap-on hand control that even people who rent can use. Just snaps in and out. The only restriction which has to be aded to the POH is a crosswind limit 2 knots lower. The wheelchair people aside, it's a sloppy way to land an airplane compared to using the wing down and riskier also. That is why I'd recommend any PPL to do a couple of hours in a sailplane. You really have to get to use the rudder... |
#34
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george wrote in news:75210936-611c-4a11-9e53-204cdc6f7fe0
@w4g2000prd.googlegroups.com: On Jul 2, 3:46 am, Bertie the Bunyip wrote: To be fair, a lot of people who learned to fly in Cherokees don't use rudder in a crosswind. Mostly because they haven't been taught to. The Cherokee will tolerate landing in a crab more than most. In fact wheelchair pilots are allowed to fly them with a snap-on hand control that even people who rent can use. Just snaps in and out. The only restriction which has to be aded to the POH is a crosswind limit 2 knots lower. The wheelchair people aside, it's a sloppy way to land an airplane compared to using the wing down and riskier also. That is why I'd recommend any PPL to do a couple of hours in a sailplane. You really have to get to use the rudder... Yeah, or a old taildragger like a cub or champ. Bertie |
#35
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On Tue, 01 Jul 2008 01:37:00 -1200, "Kadaitcha Man"
wrote: Stealth Pilot, ye manic homely swain, that butcher's cur is venom mouthed, ye derogated: On Mon, 30 Jun 2008 17:27:56 +0000 (UTC), Bertie the Bunyip wrote: Stealth Pilot wrote in : On Sun, 29 Jun 2008 18:48:29 +0000 (UTC), Bertie the Bunyip wrote: "Ken S. Tucker" wrote in news:874ec04d-d3fb- 447e- : On Jun 29, 6:09 am, Stealth Pilot wrote: ... the reason I asked the question was to point out that simulators work on a simplified model of the reality that real pilots are exposed to. people like mxsmanic seem utterly oblivious to the fact that their exposure to the simulator will never give them competent knowledge because all they are exposed to is a simplified model of reality. it is only exposure to the actual reality that will allow you to achieve competent knowledge. Yesterday, wife and I sim'd the Luna 3 mission to photograph the far side of the moon that the Ruskies did in 1959. We used trial and error but finally got it. Those poor SOB's used vacuum tubes and slide rules to "sim" the ballistics. if simulators dont get something as simple as the aircraft's shadow right can you trust that anything else they show you is right? I'd love to put Stealth Pilot on the top of a ballistic missile with a joy stick, and then have him execute the simple manuever of a lunar orbital return mission to earth. I'd be wearing a hard hat :-). Of course you would k00kie boi. Bertie I wasnt aware that alfoil hats were hard. have these buggers been using kevlar liners in them as well??? sims have a place in the industrial world but to prefer the sim to reality is just nonsense. barking mad nonsense! Stealth Pilot Well, we use 'em of course, but it's mainly because it's impractical to actually set a 757 on fire. Bertie I have a friend ****ing liar. that's an exaggeration. I was inaccurate. I actually have lots of friends. most are enthusiasts, some are pilots as well. beware or I'll sick a featherfoot upon ye. Stealth pilot |
#36
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On Jun 29, 9:59*am, Lou wrote:
I'm sorry, I didn't see this post until now. One of the fondest memories of my first solo was seeing my own shadow below. I guess my attention was elsewhere while I had the CFI in the cockpit with me. * * * *Lou I agree. Right up there with my first Flightaware track was seeing my airplane shadow the first time. There are some things that really point out that you are now different than most of the population because you can fly a plane. |
#37
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On Jul 2, 10:42 am, Bertie the Bunyip wrote:
Yeah, or a old taildragger like a cub or champ. I flew a PA22 that later got converted to a tail dragger. However with the coordinated control system that it came with made for some very interesting crosswind landings |
#38
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george wrote in news:a696ecb1-2c35-436c-8159-182c3461b708
@q24g2000prf.googlegroups.com: On Jul 2, 10:42 am, Bertie the Bunyip wrote: Yeah, or a old taildragger like a cub or champ. I flew a PA22 that later got converted to a tail dragger. However with the coordinated control system that it came with made for some very interesting crosswind landings Eww. I flew one of those and convinced the owner to remove it afterwards. I would have thought it would be standard to remove that mess with a conversion. Bertie |
#39
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On Sun, 29 Jun 2008 08:24:13 -0700, AES wrote:
In article , Stealth Pilot wrote: at 4,500ft (the original question) the aircraft has no shadow at all but at the sub solar point (were you'd think the shadow should be) there is a distinct bright area tracking along under the aircraft. for thirty years this quietly puzzled me. it is a fact that aircraft at altitude have no shadow. below them tracking along the ground is a bright spot of light. the reference I gave gives details of some original work by Fresnel which proposed that light passing beside a gravitational mass should be bent slightly by the mass and behind the body there should be a bright spot. this seems to me to be the explanation for the absense of the shadow. the mass of the aircraft acts as a gravitational lens and this causes the bright spot. Poisson spot, Spot of Arago, Keller edge waves. Very much doubt gravitational bending of light is involved. I looked up explanations and graphics of these effects. the poissons spot demo looks entirely different from what I see. I'm still happy with my explanation. Stealth Pilot |
#40
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On Jul 3, 10:07*am, Stealth Pilot
wrote: On Sun, 29 Jun 2008 08:24:13 -0700, AES wrote: In article , Stealth Pilot wrote: at 4,500ft (the original question) the aircraft has no shadow at all but at the sub solar point (were you'd think the shadow should be) there is a distinct bright area tracking along under the aircraft. for thirty years this quietly puzzled me. it is a fact that aircraft at altitude have no shadow. below them tracking along the ground is a bright spot of light. the reference I gave gives details of some original work by Fresnel which proposed that light passing beside a gravitational mass should be bent slightly by the mass and behind the body there should be a bright spot. this seems to me to be the explanation for the absense of the shadow. the mass of the aircraft acts as a gravitational lens and this causes the bright spot. Poisson spot, Spot of Arago, Keller edge waves. *Very much doubt gravitational bending of light is involved. I looked up explanations and graphics of these effects. the poissons spot demo looks entirely different from what I see. I'm still happy with my explanation. Stealth Pilot Steath, one would get sharp shadows if the sun was a point source of light, but it's not. It's like 0.8 degrees across, so rays from the left edge of the sun will trace differently to the ground than rays from its right edge. That's why the shadow is somewhat diffused. A little math will tell you how high your airplane must be before an observer on the ground will see sun all around it. It'll be when the airplane from wing to wing is less than about a degree difference in angle. 1 degree is about 1 meter across from 60 meters away, so if your wingspan is 10 meters, at 600 meters distance it subtends about 1 degree and so it would just about match the sun's angular width -- that is, the airplane would be entirely within the ring of the sun. It means the guy on the ground would not be in the dark shadow of the airplane. It really is not driven by gravitational lensing of the light, the airplane just isn't massive enough for that. |
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