and distance of the flight; considering there is no airflow to affect the flight pattern.…
Wind is caused due to air moving from a high pressure system to a low pressure…
The thin aerofoil theory is very useful as it relates values of lift to small angles of attack for aerofoils with low camber and thickness without taking into account the viscosity of the flow. The thin aerofoil theory assumes that the flow is 2 dimensional, inviscid and incompressible. It can be used to predict pressures and forces on very thin cambered surfaces with the thickness approaching zero, along with finding the lift. The assumptions for this theory is that the flow must be inviscid, two dimensional, incompressible,…
During the transition from straight-and-level flight to a climb, the angle of attack is increased and lift…
Increasing angle of attack on any airfoil causes the area of the streamtube above the wing to decrease. This produces a greater velocity increase above the wing than below the wing. The greater velocity increases the pressure differential on a cambered airfoil. The greater pressure differential on…
2. Although several forces affect the direction in which the air moves, differences in air pressure are what set the air in motion.…
What causes an "eddy" to form? An “eddy” is formed when wind encounters a solid object, a whirl of air is formed on the object’s downward side. The size and shape of the eddy depends on the speed of the wind, and the size/shape of the obstacle.…
In the discussion section we will discuss the ability of the vortex-lattice method to predict the aerodynamic characteristics of the slender wing-body configuration. Furthermore we will Investigate and discuss the sensitivity of the vortex-lattice method predictions to the number of span-wise and chord-wise panels used in the calculations.…
3. Buoyancy is an upward lifting force that acts on an object when it displaces water. Buoyancy acts against gravity…
Have you ever wondered how trajectory and the pressure in the atmosphere affects the spin of a soccer ball? I don’t really play soccer that much, but I’ve never understood why the ball curves in the air when you kick it. For my science project, I wanted to learn about the pressure in the atmosphere and how it affects a soccer ball in flight. I believe that understanding Bernoulli’s Principle may help to explain why the trajectory affects the spin of a soccer ball.…
As they fall through the air, they also experience an upward force called air resistance (drag).…
Fluids mechanics is a branch of mechanics that is concerned with properties of gases and liquids. Mechanics is important as all physical activities involves fluid environments, be it air, water or a combination of both.…
Wing tip vortices are circular twister like patterns of air left behind the wing. Each wing will have its own wing tip vortex and as the name suggests each vortex starts trailing from the wing tip. These wing tip vortices are directly linked with induced drag, as the as the wing tip vortex increases in size the drag will become greater. These vortices are created when an aerofoil generates lift, the air will have less pressure on the top of the aerofoil, and therefore the bottom surface of the aerofoil will have greater pressure. As we know the air will flow from the high pressured side (the underside) to the lower pressure side (the top side). The air flows from below the wing out and around the tip of the wing in a circular, curl like motion.…
Bernoulli’s Principle was fairly simple to understand. All you really needed to know is that wind has to travel faster over the top of the wing than the bottom of the wing to stay with the opposite side because the top of the wing is a longer distance than the bottom.…
Miflin 2005. 161-180. The air passing over the top of the wing must travel further than the air going under the wing. As the hummingbird moves forward, the velocity of the fluid increases over the wing and the pressure above the wing is reduced. The higher end under the hummingbird 's wing provides lift for the bird. Hummingbirds have unusually strong muscles that enable them to raise and lower their wings with great power. As the hummingbirds thrust their wings up and down, they fly into the air with amazing agility and speed. The sleek outline of the bird and smooth feathers create little drag as the bird darts through the air. Thus, it will be to no surprise if we ever saw Hummingbirds flying upside down.…