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How does this comport with the theory of lift gnomes? As everyone knows,
lift gnomes reside on the upper surface of the wing (which ever side is "up" at the moment) and derive nourishment from exhaust gases. When throttle is added, the gnomes get stronger and lift the airplane into the air...the reverse is true when power is reduced. Which side of the airfoil is "up" is immaterial. Most maneuvers can be explained by the lift gnome theory. Bob Gardner "Mark Oliver" wrote in message . .. The current theory of flight is based upon the Bernoulli's Principal, the pressure of a fluid (liquid or gas) decreases at points where the speed of the fluid increases. The airfoil is designed to increase the velocity of the airflow above its surface, thereby decreasing pressure above the airfoil. Simultaneously, the impact of the air on the lower surface of the airfoil increases the pressure below. This combination of pressure decrease above and increase below produces lift. Pressure is reduced due to the smaller space the air has above the wing than below. Air cannot go through the wing, so it must push around it. The surface air molecules push between the wing and outer layers of air. Due to the bump of the airfoil, the space is smaller and the molecules must go faster. THIS HAS A MAJOR PROBLEM - specifically inverted flight. The current theory of flight utilizing the Bernoulli's Principal is only applicable to normal level flight. However, we know and observe that inverted flight is possible. Thus, the Bernoulli's Principal is no longer applicable to inverted flight, so there must be another theory that supports flight, be it level or inverted. The new theory of flight is based upon the new theory of Gravitational Vector Force (released Sept 2004). Utilizing Newton's laws that equal opposite force is generated at right angles, be it applied at once or successively, and if the angle is oblique (slanted) a new force is generated. Then inverted flight is possible as force is always generated at right angles, and this is towards the ground in all cases. The net difference between the initial velocity and resistance force generated at the leading edge at right angles (downwards) creates a new force called Gravitational Vector Force, and it travels in the opposite direction (upwards) to maintain balance, impacting the bottom of the wing. The wing becomes less efficient in inverted flight due to the design of the airfoil, however it is still possible. This new theory of flight also supports the following; 1) the new force manifests at a faster rate than initial velocity, hence the wing becomes more efficient at faster speeds 2) As you extend spoilers and flaps at the leading and trailing edges, the bottom of the wing now becomes "cupped" like a satellite dish, and able to capture more Gravitational Vector Force, creating more lift You may read more about this new theory at www.threexd.com Mark Oliver |
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![]() "Bob Gardner" wrote in message ... How does this comport with the theory of lift gnomes? As everyone knows, lift gnomes reside on the upper surface of the wing (which ever side is "up" at the moment) and derive nourishment from exhaust gases. When throttle is added, the gnomes get stronger and lift the airplane into the air...the reverse is true when power is reduced. Which side of the airfoil is "up" is immaterial. Most maneuvers can be explained by the lift gnome theory. Bob Gardner In addition...............from a fine friend of mine in engineering at NASA " The Emerging Science of Lift Demons Abstract- Advanced formal study of Lift has become respectable as its radical tenets undergo controlled experimental confirmation. As in other difficult fields, theorists rely on gut intuition, finding beauty in simplicity, in formulating grant proposals. Introduction to Lift Demons Ariel: "...I come To answer thy best pleasure; be't to fly, To swim, to dive into the fire, to ride On the curled clouds, to thy strong bidding task Ariel and all his quality." [SHKSPR]Graham E. Laucht posted the following helpful overview of Lift- [Discussion Thread] Discuss "the hump on top of the wing that produces lift" ... Definitely Lift Demons, they wait unseen near the downwind end of the runway and hop on for the ride dismounting again on landing ready for the next plane. That's why taking off from the other end (looking into the big end of the windsock) can be tricky. It's also why air traffic control regulates arrivals and departures especially in areas where there is a lack of lift demons. Like at large international airports where the supply of them and baggage carts is limited. They are very sensitive to poor pilotage and can easily fall off the wing if a pilot lifts the nose too much whilst going slowly. A slightly roughened surfaces helps them to stay on longer. Originally discovered and bred in captivity by a certain Mr Bernoulli which accounts for why early attempts at manned flight were often so unsuccessful. Being air breathing creatures they are not found at very high altitudes, they don't like it much when the wings are icy or dirty which seems fair enough. Male demons outnumber females by approximately three to one and are predominantly found on the mainwing topsides whilst the females, which can only push, are found on the underside of wings and tailplanes. The males find it fairly easy to "pull" the females due to the imbalance in numbers. A favourite area for congregating males is near the wing's hump where the view is often better. Known scientifically as humping. Humping can be controlled by the pilot by raising and lowering flags at the wing ends to signify the end he would like them to pull hardest. The female of the species being on the undersides are often kept in the dark especially about the cost impact of aviation. Demons are sexually very active and have it away near the wing tips. Demon spawn can sometimes be seen streaming off the tips in a conical cocoon. Kitbuilders generally find enough in the box for the first flight, however builders of porkies might not have enough to fly properly. Neutered Demons are called vacuum and are useful for keeping coffee warm. An excess of neutered demons can cause breathing difficulties and should have a government health warning attached. Research into demon I.Q.s shows lift demons have no comprehension whatsoever of what a downwind turn is. Real NASA Wonks Discuss Lift Demons in Drag; and Stalling. Mary Shafer ) explains lift: --the real, intuitively-obvious-even-to-the-lay-person explanation of lift. People, lift is caused by lift demons. These little, invisible demons hold on to the leading and trailing edges of the aircraft and lift it into the air by flapping their wings (so, in a reductionist sense, lift is actually caused by feathers). Some of the demons are a little confused and they hold on backwards, causing drag. The reason that planes stall at high alpha is that the leading edge demons get scared and let go when they can't see the ground anymore. Lift demons have good taste and don't like to look at ugly aircraft, so they hold on backwards on ugly planes. That's why gliders have so much lift and so little drag and why F-4s have lots of drag. John Wolter ) asked: What I would like is a simple *intuitive* explanation of what causes lift on a lift demon's wing. (Here we go again... ;-) ) Mary Shafer ) replied: Feathers. The multiple filaments on feathers trap the air molecules and they struggle to escape, which causes the action-reaction that we call lift. Bat wings don't have feathers but they're hairy and that works just about as well (air molecules are a little claustrophobic). Once too often bitten milking demons for research, Dave Santos ) kindly tackles annoying questions by lay-people. Can Lift Demons be held securely? Stupid question. The little monsters are trapped in bags, for balloon or airship use, but escape given any opportunity. Instead of captivity, winged aircraft are designed to entice the demons to visit. This is not easy since they abandon common aircraft on very weak pretexts. For example, lift demons enjoy engine roar and go elsewhere when this noise stops. Birds are so lucky. They just waggle their wings to signal a desire to fly and the demons eagerly bear them aloft (Penguins, an exception, are associated with ice, which lift demons hate. See [Grahm] (above). Other flightless birds are overweight, a condition despised by lift demons (see [Grahm] ("porkies")), and [Santos] (below)). Note that bird feathers are merely ornaments evolved to attract demons, whose own "feathers" are the true source of lift [Shafer] (above). True enough, lift demons are held by cables or chain, as in elevators and hoists, and in pillars and walls, by applied weight, but such abuse ruins them for flight (ordinary stairs cage lift demons such that, conditions permitting, they are heard to groan underfoot). How Do Lift Demons Get Away WithDefying Gravity? Lift demons are the ******* offspring of "Gravity Wells", who tolerate the defiant demons without acknowledging them. The rest of us risk "falling" afoul of these vengeful G wells, except those who flee fast enough (popularly usage: Escape Velocity) and far enough to also defy Gravity (slang- "weightlessness"). Lift demons try to drop anything heavy, out of deep resentment. What about the Sound Barrier? What about it? Dumbest question yet... Under proper conditions, lift demons penetrate either sound or unsound barriers. Tibetan- mkha' rgyu'i yi dwags - air-dwelling hungry ghost / preta, hungry ghost living in the air mkha' la rgyu ba'i yi dwags - the pretas living in the air. Coming Soon: Lift Demons and the FAA. DRAFT// Grant Proposal- Just 8 million dollars is requested for the formal study of Lift by field experiment, and over the Internet (from Tahiti!). With jet travel and modern communications, Tahiti is no longer a paradigm obstacle. It is anticipated that native lift demons, as explored with state-of-the-art frizbees, kites, hang-gliders, and yachts, will display a high Q factor. Phase I (5 yr. min) will result in a completed Abstract of Phase II, a proposal for increased funding. Dudley Henriques International Fighter Pilots Fellowship Flight Instructor/Aerobatics/Retired |
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Gee, I better start ground school again.
I always thought lift demons were actually pushing the Earth from underneath the airplanes when you pointed the empennage downward. (Although it might be still the case here in Canada. We are a weird bunch up here, anyways...) "Dudley Henriques" wrote in message ink.net... "Bob Gardner" wrote in message ... How does this comport with the theory of lift gnomes? As everyone knows, lift gnomes reside on the upper surface of the wing (which ever side is "up" at the moment) and derive nourishment from exhaust gases. When throttle is added, the gnomes get stronger and lift the airplane into the air...the reverse is true when power is reduced. Which side of the airfoil is "up" is immaterial. Most maneuvers can be explained by the lift gnome theory. Bob Gardner In addition...............from a fine friend of mine in engineering at NASA " The Emerging Science of Lift Demons Abstract- Advanced formal study of Lift has become respectable as its radical tenets undergo controlled experimental confirmation. As in other difficult fields, theorists rely on gut intuition, finding beauty in simplicity, in formulating grant proposals. Introduction to Lift Demons Ariel: "...I come To answer thy best pleasure; be't to fly, To swim, to dive into the fire, to ride On the curled clouds, to thy strong bidding task Ariel and all his quality." [SHKSPR]Graham E. Laucht posted the following helpful overview of Lift- [Discussion Thread] Discuss "the hump on top of the wing that produces lift" ... Definitely Lift Demons, they wait unseen near the downwind end of the runway and hop on for the ride dismounting again on landing ready for the next plane. That's why taking off from the other end (looking into the big end of the windsock) can be tricky. It's also why air traffic control regulates arrivals and departures especially in areas where there is a lack of lift demons. Like at large international airports where the supply of them and baggage carts is limited. They are very sensitive to poor pilotage and can easily fall off the wing if a pilot lifts the nose too much whilst going slowly. A slightly roughened surfaces helps them to stay on longer. Originally discovered and bred in captivity by a certain Mr Bernoulli which accounts for why early attempts at manned flight were often so unsuccessful. Being air breathing creatures they are not found at very high altitudes, they don't like it much when the wings are icy or dirty which seems fair enough. Male demons outnumber females by approximately three to one and are predominantly found on the mainwing topsides whilst the females, which can only push, are found on the underside of wings and tailplanes. The males find it fairly easy to "pull" the females due to the imbalance in numbers. A favourite area for congregating males is near the wing's hump where the view is often better. Known scientifically as humping. Humping can be controlled by the pilot by raising and lowering flags at the wing ends to signify the end he would like them to pull hardest. The female of the species being on the undersides are often kept in the dark especially about the cost impact of aviation. Demons are sexually very active and have it away near the wing tips. Demon spawn can sometimes be seen streaming off the tips in a conical cocoon. Kitbuilders generally find enough in the box for the first flight, however builders of porkies might not have enough to fly properly. Neutered Demons are called vacuum and are useful for keeping coffee warm. An excess of neutered demons can cause breathing difficulties and should have a government health warning attached. Research into demon I.Q.s shows lift demons have no comprehension whatsoever of what a downwind turn is. Real NASA Wonks Discuss Lift Demons in Drag; and Stalling. Mary Shafer ) explains lift: --the real, intuitively-obvious-even-to-the-lay-person explanation of lift. People, lift is caused by lift demons. These little, invisible demons hold on to the leading and trailing edges of the aircraft and lift it into the air by flapping their wings (so, in a reductionist sense, lift is actually caused by feathers). Some of the demons are a little confused and they hold on backwards, causing drag. The reason that planes stall at high alpha is that the leading edge demons get scared and let go when they can't see the ground anymore. Lift demons have good taste and don't like to look at ugly aircraft, so they hold on backwards on ugly planes. That's why gliders have so much lift and so little drag and why F-4s have lots of drag. John Wolter ) asked: What I would like is a simple *intuitive* explanation of what causes lift on a lift demon's wing. (Here we go again... ;-) ) Mary Shafer ) replied: Feathers. The multiple filaments on feathers trap the air molecules and they struggle to escape, which causes the action-reaction that we call lift. Bat wings don't have feathers but they're hairy and that works just about as well (air molecules are a little claustrophobic). Once too often bitten milking demons for research, Dave Santos ) kindly tackles annoying questions by lay-people. Can Lift Demons be held securely? Stupid question. The little monsters are trapped in bags, for balloon or airship use, but escape given any opportunity. Instead of captivity, winged aircraft are designed to entice the demons to visit. This is not easy since they abandon common aircraft on very weak pretexts. For example, lift demons enjoy engine roar and go elsewhere when this noise stops. Birds are so lucky. They just waggle their wings to signal a desire to fly and the demons eagerly bear them aloft (Penguins, an exception, are associated with ice, which lift demons hate. See [Grahm] (above). Other flightless birds are overweight, a condition despised by lift demons (see [Grahm] ("porkies")), and [Santos] (below)). Note that bird feathers are merely ornaments evolved to attract demons, whose own "feathers" are the true source of lift [Shafer] (above). True enough, lift demons are held by cables or chain, as in elevators and hoists, and in pillars and walls, by applied weight, but such abuse ruins them for flight (ordinary stairs cage lift demons such that, conditions permitting, they are heard to groan underfoot). How Do Lift Demons Get Away WithDefying Gravity? Lift demons are the ******* offspring of "Gravity Wells", who tolerate the defiant demons without acknowledging them. The rest of us risk "falling" afoul of these vengeful G wells, except those who flee fast enough (popularly usage: Escape Velocity) and far enough to also defy Gravity (slang- "weightlessness"). Lift demons try to drop anything heavy, out of deep resentment. What about the Sound Barrier? What about it? Dumbest question yet... Under proper conditions, lift demons penetrate either sound or unsound barriers. Tibetan- mkha' rgyu'i yi dwags - air-dwelling hungry ghost / preta, hungry ghost living in the air mkha' la rgyu ba'i yi dwags - the pretas living in the air. Coming Soon: Lift Demons and the FAA. DRAFT// Grant Proposal- Just 8 million dollars is requested for the formal study of Lift by field experiment, and over the Internet (from Tahiti!). With jet travel and modern communications, Tahiti is no longer a paradigm obstacle. It is anticipated that native lift demons, as explored with state-of-the-art frizbees, kites, hang-gliders, and yachts, will display a high Q factor. Phase I (5 yr. min) will result in a completed Abstract of Phase II, a proposal for increased funding. Dudley Henriques International Fighter Pilots Fellowship Flight Instructor/Aerobatics/Retired |
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![]() "Apa" wrote in message ... Gee, I better start ground school again. I always thought lift demons were actually pushing the Earth from underneath the airplanes when you pointed the empennage downward. (Although it might be still the case here in Canada. We are a weird bunch up here, anyways...) Hesitation point rolls are a lot of fun for a pilot watching lift demons. It's an absolute riot to watch them scramble off the wings and onto the fuselage then back again as the roll progresses. The most I've ever been able to disturb them this way was 16. Australian lift demons can't seem to figure out which side of the wing to climb onto when they're here in the states, but they get even when ours opt for an outback vacation on their time shares. :-) Dudley Henriques International Fighter Pilots Fellowship Flight Instructor/Aerobatics/Retired |
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On Tue, 5 Oct 2004 at 21:21:26 in message
. net, Dudley Henriques wrote: "Apa" wrote in message ... Gee, I better start ground school again. I always thought lift demons were actually pushing the Earth from underneath the airplanes when you pointed the empennage downward. (Although it might be still the case here in Canada. We are a weird bunch up here, anyways...) Hesitation point rolls are a lot of fun for a pilot watching lift demons. It's an absolute riot to watch them scramble off the wings and onto the fuselage then back again as the roll progresses. The most I've ever been able to disturb them this way was 16. Australian lift demons can't seem to figure out which side of the wing to climb onto when they're here in the states, but they get even when ours opt for an outback vacation on their time shares. I actually wrote something almost serious about this amazing 'new' theory, but most posters have dealt with it so much better that I shall leave it as a draft. I love the lift demons, although my aerodynamics lecturer did not give me a good grounding in them I am afraid. Next time Dudley you must tell me more. Are they related to the RAF's Gremlins? They were good and bad. The good ones helped hold badly damaged aircraft together until after they landed in WW2. -- David CL Francis |
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Hi David;
The RAF Gremlins I think were the brainchild of Roald Dahl, who wrote a book featuring them in the early forties I think. I remember an artist painting for the book showing the little buggers climbing all over a Spitfire. Bader loved the gremlins. DB blamed everything on them including whispering in Keith Park's left ear while he was sleeping that "big wings were good policy for fighter command! :-) .. He even nicknamed one of the Germans at Colditz after them. I'd say the Gremlins are pretty much in the same league as the lift demons, but I think their work was a bit more mischievous!! :-) Dudley "David CL Francis" wrote in message ... On Tue, 5 Oct 2004 at 21:21:26 in message . net, Dudley Henriques wrote: "Apa" wrote in message ... Gee, I better start ground school again. I always thought lift demons were actually pushing the Earth from underneath the airplanes when you pointed the empennage downward. (Although it might be still the case here in Canada. We are a weird bunch up here, anyways...) Hesitation point rolls are a lot of fun for a pilot watching lift demons. It's an absolute riot to watch them scramble off the wings and onto the fuselage then back again as the roll progresses. The most I've ever been able to disturb them this way was 16. Australian lift demons can't seem to figure out which side of the wing to climb onto when they're here in the states, but they get even when ours opt for an outback vacation on their time shares. I actually wrote something almost serious about this amazing 'new' theory, but most posters have dealt with it so much better that I shall leave it as a draft. I love the lift demons, although my aerodynamics lecturer did not give me a good grounding in them I am afraid. Next time Dudley you must tell me more. Are they related to the RAF's Gremlins? They were good and bad. The good ones helped hold badly damaged aircraft together until after they landed in WW2. -- David CL Francis |
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![]() Dudley Henriques wrote: I'd say the Gremlins are pretty much in the same league as the lift demons, but I think their work was a bit more mischievous!! :-) One of the British pilots said that the Gremlins were little imps who "got behind the panel, disconnected the 'gear-up' warning, and then moved the undercart lever back to up when you were nicely established on final. After the dust settled down, they reconnected the warning, jumped up on top of the panel, stuck their tongues out at you, and left you to explain the mess to your C.O." George Patterson If a man gets into a fight 3,000 miles away from home, he *had* to have been looking for it. |
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While the general aviation community is for the most part unaware of the
vital role played by Lift Demons, the FAA has for a long time taken them into consideration when formulating Federal Aviation Regulations. In fact, understanding the needs and wants of Lift Demons greatly helps in understanding many of the rules that the FAA has introduced over the years (which otherwise make little sense to the average pilot). For example as it turns out there are two types of Lift Demons. Bird Demons and Bat Demons. Bat Demons are blind because they evolved along side bats in caves, they also have sticky feet which help them to grip onto the more slippery wings of bats. Now, when man first took to the skies, it was on the wings of bird demons (Seagull demons to be exact in Kittyhawk). However, before long some bright sparks decided that unlike birds man would fly his airplanes inside clouds (not something that birds usually do - I mean have you ever seen a bird inside a cloud ?). Straight away there was a problem. Bird Demons need to be able to see where they are going and when they can't see they get scared and quickly jump off the plane - causing unfortunate accidents. Should you every fly into a cloud by mistake - quickly start a 180 degree turn to get out of it before the Lift Demons panic. However, before long a solution was found, Bat Demons, being blind didn't panic inside a cloud, they didn't need to see in order to keep the lift working. As a bonus, their sticky feet helped them grip wet slippery wings which is common when inside a cloud. However, there are not very many Bat Demons (at least compared to Bird Demons) so you need to make sure some Bat Demons are waiting for your plane at the runway before you take off if you are planning on flying into a cloud. The FAA realized this and created the Air Traffic Control system to facilitate the timely coordination of Bat Demons and planes. And that is why FAR 91.173 exists Sec. 91.173 ATC clearance and flight plan required. No person may operate an aircraft in controlled airspace under IFR unless that person has-- (a) Filed an IFR flight plan; and (b) Received an appropriate ATC clearance. You see, when you file an IFR flight plan the flight service station computer sends a message to the nearest colony of Bat Demons telling them where and when they will be needed. Actually, the demons we all know that live inside computers can communicate directly with their demon brothers - so the Bat demons don't need their own computers. The Bat Demons don't always turn up on time, which is why you can't actually take-off until ATC sees the Bat Demons arrive and issue your IFR release. Sometimes, when the weather is really bad and lots of planes want to fly in the clouds, there are not enough Bat Demons to go around and you have to wait a long time on the ground for some to arrive. It all starts to make sense when you think about it. Bird Demons don't even like getting close to clouds. That is why you always have to ask ATC for Special VFR, this gives them a chance to call up at least a few Bat Demons, to keep all the other Demons calm as you fly close too the (but not in) the clouds. Class bravo airspace has so many big jets flying with lots of Bat Demons that there is always a few extra around which lets you get closer to the clouds as well. |
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