Lift, Weight, Thrust And Drag :: essays research papers

One of the first things that is promising to be noticed during a visit to the local airport is thewide assortment of aeroplane styles and designs. No matter what each looks like like they alldepend on the the same four factors which ar lift, weight, thrust, and drag set up is the upward root for created by the effect of airflow as it passes over and under the fells. It supports the planing machine in flight. Weight opposes lift. It is caused by the downward pull of gravity. Thrust is the precedent army which propels the airplane through the air. It varies with the amount of engine power organism used. Opposing thrust is drag, which is a backward, or retarding, top executive that limits the speed of the airplane. Lift is the key slick force. It is the force that opposes weight. In straight-and-level, unaccelerated flight, when weight and lift are equal, an airplane is in a state of equilibrium. If the other aerodynamic factors stick around constant, that airplane neithe r gains nor loses altitude. When an airplane is stationary on the ramp, it is to a fault in equilibrium, but the aerodynamic forces are not a factor. In chill out wind conditions, the atmosphere exerts equal pressure on the upper and subvert surfaces of the denotation. Movement of air about the airplane, particularly the wing, is necessary before the aerodynamic force of lift becomes effective. During flight, however, pressures on the upper and lowersurfaces of the wing are not the same. Although several factors contribute to this difference, the shape of the wing is the principal one. The wing is designed to divide the airflow into areas of high pressure below the wing and areas of comparatively lower pressure above the wing. This pressure differential, which is created by travail of air about the wing, is the primary source of lift. The weight of the airplane is not a constant. It varies with the equipment installed, passengers, cargo, and fuel load. During the course of a fli ght, the total weight of the airplane decreases as fuel is consumed. Additional weight reduction may also occur during some specialized flight activities, such as wander dusting, fire fighting, or sky diving flights.The direction in which the force of weight acts is constant. It always acts straight down toward the center of the earth. Thrust is the forward-acting force which opposes drag and propels the airplane. In most airplanes, this force is provided when the engine turns the propeller.