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What is the aspect ratio of an aircraft wing?
Aspect ratio, in aviation, the ratio of the span to the chord of an airplane wing, the latter being the length of the straight line drawn from the leading to the trailing edge, at right angles to the length of the wing.
What is aspect ratio of wing in birds?
Aspect ratio is the ratio of wingspan to the mean of its chord (or the square of the wingspan divided by wing area). A high aspect ratio results in long narrow wings that are useful for endurance flight because they generate more lift. Wing loading is the ratio of weight to wing area.
How is the aspect ratio of an aircraft calculated?
In most cases the wing chord is not equal along the length of the span (untapered) which is why aspect ratio is most commonly calculated by dividing the square of the wing span by the reference wing area. You can refer to the image earlier in this post where the formulation of the equation to calculate Aspect Ratio is shown.
What is the aspect ratio of a Cessna 172?
Both wings are fairly conventional with some taper and little or no sweep. This provides a clear example of the effect that aspect ratio has on the appearance of the wing. The Cessna 172 wing has an aspect ratio of 7.32 while the Dash 8 has a much higher aspect ratio of 12.78.
In fact there exists a clear linear relationship between the design wing area and the maximum takeoff weight all the way from the Cessna 172 to the Airbus 380-800. This is a really useful result for anyone trying to design a wing for a new airplane as it provides a convenient starting point when sizing a wing.
How is the sweep angle of an aircraft calculated?
The sweep angle most commonly quoted by aircraft designers is the quarter chord sweep angle and is calculated by finding the angle between the wing root and wing tip quarter chord (25 % of the respective chord measured from the leading edge). It’s easiest to describe how to determine the sweep angle it by means of a diagram.