Lift
Lift is one of four forces that create flight. It is directly related to temperature, pressure, and air density. If the air is colder then the air density is higher and so there is more air to create lift.
Lift
The lift is a force acting perpendicular to the direction of flight. The lift is equal to the fluid density multiplied by the circulation about the airfoil and the free stream velocity.
Lift is the component of aerodynamic force perpendicular to the relative wind.
Drag is the component of aerodynamic force parallel to the relative wind.
Lift Calculator
The purpose of this calculator is to provide you with the general lift air characteristics of your craft. You can use this information to help you choose the correct lift fan, or hull size, for the loads you intend to carry.
Lift formula
As we all (should) know, the lift formula gives us a good representation of what is going on: L = 1/2 ρ V2 x S x CL.
Lift: Probably you have held your flattened hand out of the window of a moving automobile. As you inclined your hand to the wind, the force of air pushed against it forcing your hand to rise.
Lift Curves of Finite Wings
Aspect Ratio Effect Upon Lift Curve Slope ...
Lift and Drag Coefficient
The Lift Coefficient and the Drag Coefficient represent the changes in lift and drag as the angle of attack changes.
Since the lift generated by an aerofoil is proportional to its linear speed through the air, the rotor tip at position A in the diagram will be producing a lift proportional to rω+v, ...
Blades and Lift ?
Wrote for the Helicopter History Site by
Taylor Cox , Butch Lottman and Glenn Beare ...
lift - The upward force generated by air passing over and under an aircraft's wings, resulting in air pressure above the wing decreasing in relation to the air pressure below the wing.
Lift Off
1
Turn the helicopter and transmitter power on, then place the helicopter on a flat, wide open surface. Test the functionality of the aircraft by slightly raising the left joystick, increasing the throttle enough to spin the main rotors.
Lift-Drag Ratio
The relation of total lift to total drag of an aerofoil, expressed as a mathematical proportion; 6 to 1;15 to 1 and so on.
Lifting Body ...
Lift off
Excitement continues to build. You've probably watched dozens of take offs and landings at air shows or in movies and thought, "That looks pretty easy, I can do that.
lift
Force created by an airfoil moving through atmosphere, perpendicular to the direction of motion ...
LIFT COEFFICIENT - A number that aerodynamicists use to model all of the complex dependencies of shape, inclination, and some flow conditions on lift. CL is the non-dimensional coefficient of lift.
LIFT-DRAG RATIO - The lift coefficient of a wing divided by the drag coefficient, as the primary measure of the efficiency of an aircraft; aka L/D Ratio.
Lift: (1) The component in a vertical, upward direction in straight and level flight of the resultant force created by the relative wind acting on the lifting surfaces of an aeroplane. (2) The total buoyancy of an airship.
Lift
The force generated by the movement of air across the wings of an aircraft. When enough lift is generated to overcome the weight of an aircraft, the aircraft rises.
Lift.
Force, created primarily by wings (fixed wing) or by rotors (rotary wing), acting in opposite direction of gravity vector; Symbols: Length; Typical Units: lbf,kip; Dimensions: Mass * Length / Time-squared; ...
Lift Induced Drag: Drag resulting from turbulence originating in the wingtip vortices that are created when the wings begin to generate lift.
LDA: Landing Distance Available.
LRA: Landing Run Available.
Lift varies as the square of the speed. Thus any increase or decrease of speed results in a great in-crease or decrease of lift. Interdependence of Angle of Incidence and Velocity.
LIFT - The force generated by an airfoil section, acting at right angles to the airstream flowing past it
LORAN - A long-range radio-based navigation aid.
LIFT Any aircraft engaged for transport, or the upward force generated by an aircraft wing as it moved through the air.
LIGHT JETS See 'Small-Cabin Jets.' ...
The lift coefficient can thus be effectively doubled with relatively simple devices (flaps and slats) if used on the full span of the wing.
Leading Edge Slats ...
High Lift
low drag
Strong and stiff structure
With classic airfoils, those used over the last 30 to 50 years, we have accustomed to a maximum lift coefficient of 1.4 to 1.5 with a 12 to 15% thick (d/e) airfoil and a drag coefficient of .
FoilSim - Lift Simulator FoilSim is an interactive computer program that lets you design a wing on-line and determine the theoretical lift of the wing.
upper surface lift increases relative to the lower surface force. Since the two vectors are not located at the same point along the chord line, a twisting force is exerted about the center of pressure.
Note that the lift and drag vectors are large and the total aerodynamic force is inclined well to the rear of the axis of rotation. If the engine stops when the helicopter is in this condition, rotor RPM decay is rapid.
Flaps: Control surfaces of inner wings to increase lift on take-off/manouevring and braking upon landing.
Flat-hatting: High speed flying on the "Deck".
Forget all that stuff about thrust and drag, lift and gravity; an airplane flies because of money. It's better to be down here wishing you were up there, than up there wishing you were down here.
Stall - A loss of lift when the angle of attack increases to a point where the flow of air breaks away from a wing or airfoil, causing the wing to drop.
airfoil - A surface, such as an airplane wing, shaped to produce more lift than resistance when driven through the air.
All-weather fighter - A radar-equipped jet fighter airplane which can operate at night or in the worst weather.
He was the first to identify the four aerodynamic forces of flight weight, lift, drag, and thrust and their relationship. He was also the first to build a successful human-carrying glider.
Wake turbulence: Wingtip vortices generated behind a wing producing lift. Behind a large heavy aircraft they can be powerful enough to roll or even break up a smaller aircraft.
As an aircraft, the primary advantages of the helicopter are due to the rotor blades that revolve through the air, providing lift without requiring the aircraft to move forward the way an airplane does.
With a pair of 160 hp engines and only 3,600 pounds to lift, the Twin Comanche offers good climb and an easy 165 knots of cruise.
Wing Loading This is the amount of weight per square foot that has to be overcome to provide lift. It is normally expressed in ounces per square foot.
When extended the minimum (10 degrees) for takeoff, they increase the aircraft's lift-to-drag ratio and thus shorten the takeoff run (zero them when airborne).
Non-symmetrical cambered airfoils have a higher lift coefficient, but they also
have a negative pitching moment (Cm) tending to pitch nose-down, and thus
being statically unstable, which requires the counter moment produced by the ...
SPIN An aerodynamic condition in which the wings have lost lift and the aircraft follows a descending corkscrew flight pattern in autorotation.
INTRODUCTION :
The lift and drag characteristics of a glider are needed in order to estimate its performance accurately in flight. The basic lift-drag relation is written as the drag-polar :
CD=CDO+KCL2
(2.1) ...
These aircraft use the wind and rising columns of warm air for lift. Like birds, they can soar for great distances and to great heights. The world's first successful airplanes were all gliders, including many built by the Wright Brothers.
This explains the lift generated by an airplane's wing and its ability to fly: if air travels faster over one side of a wing than it does over the other side, a pressure difference arises, which exercises pressure on the wing, ...
The point at which the airflow breaks away from an aerofoil and lift is lost due to the change in the angle of the surface to the airflow. Can also happen to compressor blades of a gas turbine engine, causing loss of thrust.
STAR ...
The engines were too heavy and too weak to lift the machine off the ground. However, Adler falsely claimed that he had flown about 1,000 feet (300 m).
The small wings at the rear of an aircraft's fuselage that balance the lift forces generated by the main wings farther forward on the fuselage. The stabilizer also usually contains the elevator.
Hypersonic Flight ...
C of P - centre of pressure, the point through which the total effect of lift may be said to act on an aeroplane.
C/L - centre line (of a runway, for example).
c/s - call sign.
extra tail downforce requires more lift from wing resulting in greater induced drag. This means higher fuel consumption and reduced range; ...
GROUND LIAISION OFFICER (GLO). An officer assigned to XVIII ABN CORPS and attached to the 43rd Air Lift Wing at Pope AFB Command Post and assists with Army/Air Force coordination during joint airborne and airland movement operations.
Flaps Parts of the wings that can be extended to help slow the plane for landing and increase lift at low speeds. Full flaps are typically used for landing, and partial flaps may also be used for takeoff.
Collective: A flight control operated by moving up or down with hand in rotary-wing aircraft, primarily to control lift (altitude); controls the collective or total pitch of the rotors on a rotary-wing aircraft.
 See also: Flight, Aircraft, Speed, Plane, Pilot
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