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The effect of downwash from a hovering Sikorsky Seahawk is clearly visible on the surface of water below.. In aeronautics, downwash is the change in direction of air deflected by the aerodynamic action of an airfoil, wing, or helicopter rotor blade in motion, as part of the process of producing lift. [1]
After the 2009 crash of Colgan Air Flight 3407, Congress passed legislation, subsequently signed into law, requiring any pilot flying for a Federal Aviation Regulations (FAR) Part 121 airline (all United States major airlines and their regional affiliates), that requires three or more pilots to include new-hire first officers, must have had at ...
A Canadian aeroplane flight instructor (left) and her student, next to a Cessna 172 with which they have just completed a lesson. Flight training is a course of study used when learning to pilot an aircraft. The overall purpose of primary and intermediate flight training is the acquisition and honing of basic airmanship skills. [1]
Lift is proportional to the density of the air and approximately proportional to the square of the flow speed. Lift also depends on the size of the wing, being generally proportional to the wing's area projected in the lift direction. In calculations it is convenient to quantify lift in terms of a lift coefficient based on these factors.
This can lead to dramatic improvements in lift for supersonic/hypersonic aircraft. Clarence Syvertson and Alfred J. Eggers discovered this phenomenon in 1956 as they analyzed abnormalities at the reentry of nuclear warheads. [1] The basic concept of compression lift is well known; "planing" boats reduce drag by "surfing" on their own bow wave ...
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Aircraft flight mechanics are relevant to fixed wing (gliders, aeroplanes) and rotary wing (helicopters) aircraft.An aeroplane (airplane in US usage), is defined in ICAO Document 9110 as, "a power-driven heavier than air aircraft, deriving its lift chiefly from aerodynamic reactions on surface which remain fixed under given conditions of flight".
For a beginner, strength training is not at all straightforward, and there are a lot of mixed messages about the best way to go about it. In the gym, the heavy weights are often set up in a ...