If an aircraft is operating with dynamic pressure of the free stream q=20Pa and has area of wing is 10m^2 then evaluate drag experience by the aircraft. Given drag coefficient is 0.9.(a) 180 N(b) 345 N(c) 234 N(d) 567 NI have been asked this question at a job interview.Query is from Aerodynamic Coefficients in portion Aerodynamics of Aircraft Design

If an aircraft is operating with dynamic pressure of the free stream q

1.	If an aircraft is operating with dynamic pressure of the free stream q=20Pa and has area of wing is 10m^2 then evaluate drag experience by the aircraft. Given drag coefficient is 0.9.(a) 180 N(b) 345 N(c) 234 N(d) 567 NI have been asked this question at a job interview.Query is from Aerodynamic Coefficients in portion Aerodynamics of Aircraft Design
Answer» The CORRECT answer is (a) 180 N Easiest explanation: Given, FREE STREAM q=20Pa, AREA of wing S = 10m^2, drag coefficient CD = 0.9 Drag D = qSCD = 20100.9 = 180N.

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