I believe Newton’s third law is regarding a positive AOA with regards to relative wind. At the wind attempts to strike the bottom of the wing, it is deflected downward and the the 3rd law forces the wing upward. The Second law is unrelated to this. It has to do with the momentum shift of the downward flow over the wing.
Momentum shift occurs in accordance with Newton's Second Law (Force = Rate of Change of Momentum = mass x acceleration). Newton's Third Law tells us that forces always occur in pairs, and those pairs are equal and opposite. Momentum change od the air results in and equal and opposite momentum change of the wing.
According to NASA, which refers to real-world commercial airplanes, the lift created by Bernoulli's principle (the wing shape diagram, explained in part 1) is small in comparison with the lift Newton's 3rd law: The air deflected by the wing downwards creates an upward push on the airplane's wings, creating lift. So if we maximize the angle of attack of the wind against the wing, the bigger is the lift. This tutorial falls into the airfoil myth, which believes that lift created by the shape of the wing has a greater impact in lift that the angle of attack of the wind against the wing.
It is a basic topological requirement that vortex filaments are endless. If there are wingtip vortices, then there has to be bound vorticity associated with the aerofoil, and a starting vortex left behind on the runway, both to complete the vortex loop. It is the bound vorticity which generates lift by the Magnus effect, or the Kutta-Joukowski circulation theorem if you wish. You report that an aerofoil spanning a wind tunnel has no wingtip vortices. In that case there is no vorticity associated with the aerofoil, no lift, and it is likely that the working fluid is a superfluid like liquid helium. You may need to think things through.
Angle of attack, not Bernoulli’s Principle, explains how wings provide lift, allowing airplanes to fly. Otherwise, you’d never see an airplane or fighter jet fly upside down. Check this out for a better explanation: www.scienceabc.com/eyeopeners/how-airplane-jets-stunt-planes-fly-upside-down-lift-shape-of-wings-angle-of-attack.html
www.allstar.fiu.edu/aero/airflylvl3.htm All wings turned upside down and placed at the proper angle of attack and airspeed will develop lift, just not efficiently Yes even barn doors. That is why even non-symmetrical wings will fly upside down. Wing tip vortices is a drag producer and wing efficiency killer and has little to do with the lift developed closer to the wing root. Keep reading and learning, good job.
This is a very theoretical explanation of how airplanes work. I would better call it how wings work. Commercial Airplanes use the upward lift created by Newton's law a lot more than Bernoulli's principle. This also means that they are quite bad at gliding, but really good at gaining altitude thanks to their engines and the ability of the pilot to change the geometry of the wings. I think people look more often for practical explanations than theoretical explanations, which are very often counter intuitive. For example, when going in a car at high speed in the motorway and you put your hand out the window, you will feel Newton's law lifting you hand or pushing it downwards, depending on the angle you position it: This is mostly how airplanes fly (and land!)
if there is a downwash by the wing, should the plane not keep rising? This contradicts how the plane can maintain altitude. pls clarify my doubt.
I believe Newton’s third law is regarding a positive AOA with regards to relative wind. At the wind attempts to strike the bottom of the wing, it is deflected downward and the the 3rd law forces the wing upward. The Second law is unrelated to this. It has to do with the momentum shift of the downward flow over the wing.
Momentum shift occurs in accordance with Newton's Second Law (Force = Rate of Change of Momentum = mass x acceleration). Newton's Third Law tells us that forces always occur in pairs, and those pairs are equal and opposite. Momentum change od the air results in and equal and opposite momentum change of the wing.
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But according to NASA during flight there is only newton 's first law of motion.
According to NASA, which refers to real-world commercial airplanes, the lift created by Bernoulli's principle (the wing shape diagram, explained in part 1) is small in comparison with the lift Newton's 3rd law: The air deflected by the wing downwards creates an upward push on the airplane's wings, creating lift. So if we maximize the angle of attack of the wind against the wing, the bigger is the lift.
This tutorial falls into the airfoil myth, which believes that lift created by the shape of the wing has a greater impact in lift that the angle of attack of the wind against the wing.
It is a basic topological requirement that vortex filaments are endless. If there are wingtip vortices, then there has to be bound vorticity associated with the aerofoil, and a starting vortex left behind on the runway, both to complete the vortex loop. It is the bound vorticity which generates lift by the Magnus effect, or the Kutta-Joukowski circulation theorem if you wish.
You report that an aerofoil spanning a wind tunnel has no wingtip vortices. In that case there is no vorticity associated with the aerofoil, no lift, and it is likely that the working fluid is a superfluid like liquid helium. You may need to think things through.
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You don't know about NASA space organization of US .
Angle of attack, not Bernoulli’s Principle, explains how wings provide lift, allowing airplanes to fly. Otherwise, you’d never see an airplane or fighter jet fly upside down.
Check this out for a better explanation: www.scienceabc.com/eyeopeners/how-airplane-jets-stunt-planes-fly-upside-down-lift-shape-of-wings-angle-of-attack.html
Why aeroplanes fly at low altitudes
Can you do the thermodynamic laws in regards to airplanes too?
www.allstar.fiu.edu/aero/airflylvl3.htm All wings turned upside down and placed at the proper angle of attack and airspeed will develop lift, just not efficiently Yes even barn doors. That is why even non-symmetrical wings will fly upside down. Wing tip vortices is a drag producer and wing efficiency killer and has little to do with the lift developed closer to the wing root. Keep reading and learning, good job.
This is a very theoretical explanation of how airplanes work. I would better call it how wings work.
Commercial Airplanes use the upward lift created by Newton's law a lot more than Bernoulli's principle.
This also means that they are quite bad at gliding, but really good at gaining altitude thanks to their engines and the ability of the pilot to change the geometry of the wings.
I think people look more often for practical explanations than theoretical explanations, which are very often counter intuitive.
For example, when going in a car at high speed in the motorway and you put your hand out the window, you will feel Newton's law lifting you hand or pushing it downwards, depending on the angle you position it: This is mostly how airplanes fly (and land!)