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NASA

NASA

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Lift is the force that holds an airplane in the air. The wings create most of the lift used by airplanes. The way the four forces act on the airplane make the plane do different things. Each force has an opposite force that works against it. Lift works opposite of weight. Thrust works opposite of drag.

Aerodynamic Drag – The Physics Hypertextbook

Aerodynamic Drag – The Physics Hypertextbook

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Discussion pressure drag. The force on an object that resists its motion through a fluid is called the fluid is a gas like air, it is called aerodynamic drag or air the fluid is a liquid like water it is called hydrodynamic drag, but never "water resistance".. Fluids are characterized by their ability to flow.

Air in Motion: Aerodynamics and the 4 Forces of Flight ...

Air in Motion: Aerodynamics and the 4 Forces of Flight ...

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 · Drag. Drag is the aerodynamic force that opposes the motion of the airplane through the air. Drag is caused by both friction (parasite drag) and the generation of lift (induced drag). Many factors affect the magnitude of drag, including the aircraft's size and shape, velocity, and the properties of the air flowing past the aircraft.

Effect of Reynolds Number on Aerodynamics of Airfoil with ...

Effect of Reynolds Number on Aerodynamics of Airfoil with ...

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LifttoDrag Ratio versus Lift Coefficient. The lifttodrag ratio as a function of lift coefficient for the airfoil without and with GF is presented in Figure 8. For the sake of clarity, the lifttodrag ration is presented at four Reynolds numbers only (Re = × 10 4, 8 × 10 4, × 10 5 and × 10 5).

Aerodynamic Characteristics of a NACA 4412 Airfoil

Aerodynamic Characteristics of a NACA 4412 Airfoil

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NACA 4412 Airfoil 4 digit code used to describe airfoil shapes 1st digit maximum camber in percent chord 2nd digit loion of maximum camber along chord line (from leading edge) in tenths of chord 3rd and 4th digits maximum thickness in percent chord NACA 4412 with a chord of 6" Max camber: " (4% x 6") Loion of max camber: " aft of leading edge ( x 6")

HYDRODYNAMICS DRAG AND FLUID RESISTANCE

HYDRODYNAMICS DRAG AND FLUID RESISTANCE

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Hydrodynamics, general. When an object is immersed in a fluid stream, there is phenomena of friction and turbulence. when the fluid is air, the study of these phenomena is Aerodynamics.; when the fluid is water, the study of these phenomena is Hydrodynamics.; The study of hydrodynamic resistance (Rh) does not currently have a comprehensive theory that would apply an equation corresponding to ...

What Is Aerodynamics? | NASA

What Is Aerodynamics? | NASA

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 · What Is Lift? Lift is the push that lets something move up. It is the force that is the opposite of weight. Everything that flies must have lift. For an aircraft to move upward, it must have more lift than weight. A hot air balloon has lift because the hot air inside is lighter than the air around it. Hot air rises and carries the balloon with it.

What is actually explained in the LiftDrag polar?

What is actually explained in the LiftDrag polar?

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Answer (1 of 2): Thanks for the A2A opportunity. I'll try to address this in a way that approaches it from a layperson's point of view but where the layperson does have some understanding of forces and vector components. Please note that there has been a correction to the paragraph below as to ...

Lift and Drag

Lift and Drag

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Example Aeroplane and Airfoil Lift Drag and required Thrust Power. For an aeroplane with velocity 100 m/s, wing area 20 m 2, a drag coefficient and a lift coefficient the lifting force acting on the airfoil can be calculated. F L = 1/2 ( kg/m 3) (100 m/s) 2 (20 m 2) = 84000 (N) = 84 (kN) The drag force can be calculated

Lift or Drag? The Physics of Flight Quiz | HowStuffWorks

Lift or Drag? The Physics of Flight Quiz | HowStuffWorks

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Lift or Drag? The Physics of Flight Quiz. SCIENCE By: Staff. 5 Min Quiz Image: refer to hsw About This Quiz. Long before the Wright brothers guided their fixedwing aircraft over the North Carolina dunes, daredevils and engineers worked to decode the secrets of sustained heavierthanair human flight. What do you know about the physics ...

Types of drag on aircraft

Types of drag on aircraft

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Lift is another aerodynamic force. It is a force which keeps an aircraft in the air and its magnitude is equal to the weight of the aircraft during stable flight. The direction of lift is perpendicular to the oncoming airflow towards the aircraft. Lift induced drag, as the name suggests, is a drag produced due to lift.

Lecture 2: Airplane Aerodynamics | Class Videos | Private ...

Lecture 2: Airplane Aerodynamics | Class Videos | Private ...

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And if your weight is greater than your lift, then you descend. But if you're just flying straight, you're in an equilibrium where those two forces cancel out. So good. I have a more detailed diagram of angle of attack. So you can see here the chord line. You can also see the relative wind and same things that I drew herethe lift and the drag ...

Forces Acting on the Helicopter

Forces Acting on the Helicopter

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Lift and thrust act straight up; weight and drag act straight down. The sum of the lift and thrust forces must equal the sum of the weight and drag forces in order for the helicopter to hover. During vertical flight in a nowind condition, the lift and thrust forces both act vertically upward. Weight and drag both act vertically downward.

14. Flight Performance Part 1 (steady level flight) Min ...

14. Flight Performance Part 1 (steady level flight) Min ...

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14. Flight Performance Part 1 (steady level flight) Min and Max Speed Situation: We now have the ability to compute (thrust), lift, and drag at any flight condition. We also know the equations of motion which define how the forces balance and that determine the

Induced Drag

Induced Drag

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Induced Drag is an inevitable consequence of lift and is produced by the passage of an aerofoil ( wing or tailplane) through the air. Air flowing over the top of a wing tends to flow inwards because the decreased pressure over the top surface is less than the pressure outside the wing tip. Below the wing, the air flows outwards because the ...

DRAG® Control Valves

DRAG® Control Valves

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DRAG® technology limits the velocity of the fluid as it enters the seating area and minimizes the erosive forces that would otherwise compromise the valve's ability to effectively control leakage. In addition to controlling destructive fluid velocities, IMI CCI utilizes both high actuation forces and uniquely designed seals and seating to maintain repeatable tight shutoff.

Forces Acting on the Aircraft

Forces Acting on the Aircraft

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Thrust, drag, lift, and weight are forces that act upon all aircraft in flight. Understanding how these forces work and knowing how to control them with the use of power and flight controls are essential to flight. The four forces acting on an aircraft in straightandlevel, unaccelerated flight are thrust, drag, lift.

Illegal Moving and Handling Techniques

Illegal Moving and Handling Techniques

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 · Combined Lift. A lift where one carer uses a shoulder lift and the other faces the opposite way placing an inner hand under the person's sacrum. Both carers hold a handling sling placed under the person's thighs. This is a high risk activity and has the same dangers as the drag lift. Flip Turn on Bed

Simple Missile Ballistics

Simple Missile Ballistics

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Because lift and drag forces are both proportional to the square of the velocity, the lift and drag at Mach 3 will be 9 times greater than the lift and drag at Mach 1. Maximum range can be achieved by flying at very high altitudes where the density of the air is very low and the drag will consequently also be .

Wings and lift — Science Learning Hub

Wings and lift — Science Learning Hub

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The amount of lift depends on the speed of the air around the wing and the density of the air. To produce more lift, the object must speed up and/or increase the angle of attack of the wing (by pushing the aircraft's tail downwards). Speeding up means the wings force more air downwards so lift is increased.

Delft University of Technology Aircraft Drag Polar ...

Delft University of Technology Aircraft Drag Polar ...

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Aerodynamic lift and drag forces of an aircraft are complied and computationally intensive to compute. Lift and drag are considered as functions of the wing area, dynamic airspeed, and air density, and the remaining effects of the flow for both the lift and .