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It is caused by the downward pull of gravity commencer à apprendre
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Thrust is the forward force which propels the airplane through the air. commencer à apprendre
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Opposing thrust is drag, which is a backward, or rerarding, force that limits the speed of the airplane commencer à apprendre
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In a straight-and-level, unaccelerated flight, the four forces are in equilibrium. commencer à apprendre
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The magnitude of a vector is indicated by the arrow’s length. commencer à apprendre
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When two or more forces act on an object at the same time, they combine to create a resultant. commencer à apprendre
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When vertical and horizontal forces are applied, the resultant acts in diagonal direction. commencer à apprendre
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In calm wind conditions, the atmosphere exerts equal pressure on the upper and lower surfaces of the wing. commencer à apprendre
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Although several factors contribute to this difference, the shape of the wing is the principal. commencer à apprendre
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movement of air about the wing commencer à apprendre
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ruch powietrza wokół skrzydła
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Bernoulli’s principle explains how air pressure decreases as velocity increases. commencer à apprendre
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Any surface that alters airflow causes a venturi effect. commencer à apprendre
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The greatest curvature on the upper portion causes air to accelerate as it passes over the wing. commencer à apprendre
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According to Newton’s Third Law of Motion, „for every action there is an equal and opposite reaction”. commencer à apprendre
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wysklepienie/ wygiecie profilu
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Notice that lift acts perpendicular to the relative wind, regrdless of angle of attack. commencer à apprendre
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w odniesieniu/jesli chodzi o
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Once this happens, the lifting capacity dimnishes. commencer à apprendre
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Aspect ratio is the relationship between the length and width of wing. commencer à apprendre
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Wing is attached to the fuselage with the chord line inclined upward at a slight angle. commencer à apprendre
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Angle of incidence is the angle between the chord line and a line parallel to the longitudinal axis of an airplane. commencer à apprendre
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Kąt zaklinowania skrzydła
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Anytime you move the control column fore or aft during flight, you change the angle of attack. commencer à apprendre
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The coefficient of lift is a way to measure lift as it relates to angle of attack. commencer à apprendre
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Every airplane has an angle of attack where maximum lift occurs. commencer à apprendre
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As angle of attack increases, CL also increases. This continues to a point where CL peaks. commencer à apprendre
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Increasing the angle of attack beyond CLmax causes progresive disruption of airflow from the upper surface of the wing. commencer à apprendre
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A stall is caused by the separation of airflow from the wing’s upper surface. commencer à apprendre
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The onset of a stall is gradual. commencer à apprendre
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An approach with full flaps permits you to fly slowly and at a fairly steep descent angle without gaining airspeed. commencer à apprendre
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poszerzacz/ klapa fowlera
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When drag again equals thrust, the airplane ceases to accelerate and maintains a constant airspeed. commencer à apprendre
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When you reduce thrust, the force, the force of drag causes the airplane to decelerate. commencer à apprendre
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Parasite drag increases with an increase in airspeed. It consists of all drag not associated with the production of lift. commencer à apprendre
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Induced drag is associated with the production of lift. commencer à apprendre
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Form drag is created by any stucture which protrudes into the relative wind. commencer à apprendre
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A square strut will create substaintially more drag than a smooth or rounded strut. commencer à apprendre
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A thin layer of air clings to these rough surfaces and creates small eddies which contribute to drag commencer à apprendre
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