ASSIGNMENT SHEET 2-2-3: LIFT PRODUCTION AND DRAG REVIEW

Descrição

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.
Justin Vaughan
Quiz por Justin Vaughan, atualizado more than 1 year ago
Justin Vaughan
Criado por Justin Vaughan aproximadamente 9 anos atrás
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Resumo de Recurso

Questão 1

Questão
Aerodynamic force is the ______.
Responda
  • 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

Questão 2

Questão
The component of aerodynamic force that acts parallel to the relative wind is ______.
Responda
  • parasite drag
  • lift
  • drag
  • angle of attack

Questão 3

Questão
A ______ airfoil produces lift at zero degrees angle of attack.
Responda
  • symmetric
  • tapered
  • dihedral
  • positively cambered

Questão 4

Questão
L/DMAX is the point where ______.
Responda
  • drag is the greatest
  • lift is the greatest
  • the ratio of lift to drag is the greatest
  • the stall angle of attack is reached

Questão 5

Questão
Total drag is composed of ______.
Responda
  • parasite and induced drag
  • form and interference drag
  • thrust and lift
  • upwash and downwash

Questão 6

Questão
Parasite drag is ______.
Responda
  • 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

Questão 7

Questão
Maximum excess power for a propeller-driven aircraft occurs ______ L/DMAX.
Responda
  • at an airspeed below
  • at
  • at an airspeed above
  • independent of

Questão 8

Questão
As altitude increases, power available ______.
Responda
  • increases
  • remains the same
  • decreases
  • is equal to thrust available

Questão 9

Questão
A ______ trim tab will increase the force required to move a control surface to full deflection
Responda
  • servo
  • neutral
  • anti servo
  • balanced

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