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Graphical representation of sink rate of sailplane is called ____________(a) typical speed polar(b) drag polar wing(c) lift curve of wing(d) propulsion systemsI have been asked this question in class test.This intriguing question originated from Flight Mechanics in chapter Performance and Flight Mechanics of Aircraft Design

Answer»

Correct choice is (a) TYPICAL speed polar

To explain: The graphical REPRESENTATION of sink RATE for sailplane is called speed polar. Speed polar is also known as hodograph. Drag polar is graphical representation of drag characteristics. LIFT curve is used to provide RELATIONSHIP between lift and angle of attack.



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