Justin Vaughan
Quiz por , criado more than 1 year ago

This lesson is a continuation of aerodynamic principles from Lesson 2.1. Definitions of lift, weight, thrust and drag and how each relates to one another on an aircraft will be presented. Basic configuration principles and effects on lift production will also be discussed.

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Justin Vaughan
Criado por Justin Vaughan mais de 8 anos atrás
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ASSIGNMENT SHEET 2-2-3: LIFT PRODUCTION AND DRAG REVIEW

Questão 1 de 9

1

Aerodynamic force is the ______.

Selecione uma das seguintes:

  • force that is perpendicular to the relative wind

  • leading edge stagnation point

  • result of pressure and friction distribution over an airfoil

  • force that is parallel to the relative wind

Explicação

Questão 2 de 9

1

The component of aerodynamic force that acts parallel to the relative wind is ______.

Selecione uma das seguintes:

  • parasite drag

  • lift

  • drag

  • angle of attack

Explicação

Questão 3 de 9

1

A ______ airfoil produces lift at zero degrees angle of attack.

Selecione uma das seguintes:

  • symmetric

  • tapered

  • dihedral

  • positively cambered

Explicação

Questão 4 de 9

1

L/DMAX is the point where ______.

Selecione uma das seguintes:

  • drag is the greatest

  • lift is the greatest

  • the ratio of lift to drag is the greatest

  • the stall angle of attack is reached

Explicação

Questão 5 de 9

1

Total drag is composed of ______.

Selecione uma das seguintes:

  • parasite and induced drag

  • form and interference drag

  • thrust and lift

  • upwash and downwash

Explicação

Questão 6 de 9

1

Parasite drag is ______.

Selecione uma das seguintes:

  • the component of drag associated with the production of lift

  • minimized by installing winglets, wingtip fuel tanks or missile rails

  • greatest at low airspeeds

  • made up of form, friction, and interference drag

Explicação

Questão 7 de 9

1

Maximum excess power for a propeller-driven aircraft occurs ______ L/DMAX.

Selecione uma das seguintes:

  • at an airspeed below

  • at

  • at an airspeed above

  • independent of

Explicação

Questão 8 de 9

1

As altitude increases, power available ______.

Selecione uma das seguintes:

  • increases

  • remains the same

  • decreases

  • is equal to thrust available

Explicação

Questão 9 de 9

1

A ______ trim tab will increase the force required to move a control surface to full deflection

Selecione uma das seguintes:

  • servo

  • neutral

  • anti servo

  • balanced

Explicação

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