The elliptical lift distribution has a major interest in making wings because_____(a) Minimum induced drag(b) e = 0(c) δ = 1(d) Aspect ratio lowestI have been asked this question during an interview.This interesting question is from Prandtl’s Classical Lifting-Line Theory in chapter Flow over Airfoils over Finite Wing of Aerodynamics

The elliptical lift distribution has a major interest in making wings

1.	The elliptical lift distribution has a major interest in making wings because_____(a) Minimum induced drag(b) e = 0(c) δ = 1(d) Aspect ratio lowestI have been asked this question during an interview.This interesting question is from Prandtl’s Classical Lifting-Line Theory in chapter Flow over Airfoils over Finite Wing of Aerodynamics
Answer» Correct answer is (a) MINIMUM induced drag The best EXPLANATION: The coefficient of induced drag is CD,i=\(\FRAC {C_l^2}{\pi eAR}\). For an elliptic wing, E = 1 and/or δ = 0 i.e. the induced drag is minimum. The aspect ratio for the elliptic wing is not lowest. Moreover, we need a higher aspect ratio for lower induced drag.

Discussion

No Comment Found

Related InterviewSolutions

Is loading distribution is represented by the sum of finite number?(a) True(b) FalseThis question was posed to me in an interview for job.My query is from The Lifting Surface Theory topic in chapter Flow over Airfoils over Finite Wing of Aerodynamics
Is loading of lifting surfaces antedates the achievements of powered flights?(a) True(b) FalseI have been asked this question in an interview.The above asked question is from The Lifting Surface Theory topic in division Flow over Airfoils over Finite Wing of Aerodynamics
Is lifting surface problems evaluated on the basis of loading?(a) True(b) FalseI had been asked this question in final exam.The query is from The Lifting Surface Theory in chapter Flow over Airfoils over Finite Wing of Aerodynamics
Is downwash distribution on the platform is regular?(a) True(b) FalseThis question was posed to me during an interview.Question is taken from The Lifting Surface Theory topic in portion Flow over Airfoils over Finite Wing of Aerodynamics
Is lift over each wing segment is correspond?(a) False(b) TrueThe question was posed to me in my homework.Question is from The Lifting Surface Theory in chapter Flow over Airfoils over Finite Wing of Aerodynamics
Is it difficult to predict the analytically overall amount of lift?(a) True(b) FalseThe question was posed to me in an international level competition.The above asked question is from The Lifting Surface Theory in portion Flow over Airfoils over Finite Wing of Aerodynamics
Is subsonic lifting surface theory relates to normal velocity?(a) True(b) FalseI have been asked this question in a national level competition.My question is based upon The Lifting Surface Theory topic in chapter Flow over Airfoils over Finite Wing of Aerodynamics
Is vortex loses strength along the whole wingspan?(a) False(b) TrueThe question was posed to me in exam.Question is taken from The Lifting Surface Theory in section Flow over Airfoils over Finite Wing of Aerodynamics
Is plan forms with smooth edge shapes?(a) True(b) FalseThis question was posed to me during a job interview.My question comes from The Lifting Surface Theory topic in section Flow over Airfoils over Finite Wing of Aerodynamics
Is vortex filament equation can be modified to include the effects of point vortices?(a) False(b) TrueI have been asked this question in my homework.This question is from The Vortex Filament, Biot-Savart Law, Helmholtz Theorem in chapter Flow over Airfoils over Finite Wing of Aerodynamics

Discussion

No Comment Found

Related InterviewSolutions

Reply to Comment