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  1. Define vector
    is a quantity that represents magnitude and directions
  2. Define displacement
    The distance and direction of a body's movement
  3. Define velocity
    the speed and direction of a body's movement
  4. Define density
    • mass per unit of volume
    • D=mass/volume
  5. Define acceleration
    the rate of a body's change of velocity
  6. Define force
    • a push or pull on a body
    • mass X acceleration
  7. Define work
    what a force acts upon a body and moves it
  8. Define power
    the rate of doing work
  9. Define moment
    • what is created when a force is applied at some distance from an axis or fulcrum, producing rotation about that point
    • M=force X distance
  10. Define potential energy
    the ability of a body to do work because of tis position or state of being
  11. Define kinetic energy
    ability of a body to do work because or its motion
  12. Newton's First Law of Motion
    • Law of Equilibrium
    • a body at rest tends to remain at res and a body in motion tends to remain in motion in a straight line at a constant velocity unless acted upon by some unbalanced force
    • T6 in level unaccelerated flight
  13. Newtons second Law
    • Law of Acceleration
    • An unbalanced force acting upon a body produces an acceleration in the direction of the force that is directly proportional to the force and inversely proportional to the mass of the body
    • Thrust of a/c is greater than its drag, a/c will accelerate until drag=thrust
  14. Newton's third law
    • Law of Interaction
    • for every action, there is an equal and opposite reaction
    • Rearward force of a a/c propeller's propwash causes an a/c to thrust forward at an equal amount of force
  15. Define ambient static pressure
    • A measurement of the weight of an air column over a specific area
    • As altitude increases, there are less particles in a given column of air, thus ambient static pressure is less, because the column  of air above you weighs less
  16. Define temperature
    The measure of the average kinetic energy of the air particles
  17. What law is this formula for?
    Pressure=(density)(gas constant)(temperature)
    General gas law
  18. If you _____ temperature but keep density constant, then it follows that pressure must rise.
  19. If ______ is kept constant then there is an inverse relationship between density and temperature.
  20. Define static pressure
    the force that molecules of air exert on each other by their random movement
  21. Define Dynamic pressure
    a measure of impact pressure of a large group of air molecules moving together
  22. Define total pressure
    the sum of static and dynamic pressure
  23. As the cross-sectional (diameter) are on one side of the tube gets smaller, velocity must _____ so that mass flow remains constant
  24. Since total pressure is constant for all points in a streamtube, if dynamic pressure _______ at a point then static pressure must _____ at the same point.
    increase; decrease
  25. dynamic pressure over an airfoil in a tube _____ because the fluid velocity _______. Static pressure must ____ at the airfoil surface.
    • increase; increase; decrease
    • dynamic pressure and fluid velocity are directly related; while static pressure is inversely related
  26. Define true altitude
    the actual height above mean seal level
  27. Define pressure altitude
    height measured above a standard datum plane
  28. Define density altitude
    pressure altitude corrected for temperature deviations form the standard atmosphere
  29. At hotter temperatures, the air becomes less dense and _____ ____ _____.
    density altitude increases
  30. Define true airspeed
    the actual speed at which an aircraft moves through an air mass
  31. What pressure does the airspeed indicator show?
    • dynamic pressure
    • Takes total pressure through pitot tube, subtracts static pressure from static ports = dynamic pressure or IAS
  32. TAS will _______ if IAS is held constant while climbing to a higher altitude.
    • increase
    • 3 knots/1000'
  33. Define calibrated arispeed
    indicated airspeed corrected for either indicator error, or position errors
  34. Define equivalent airspeed
    calibrated airspeed corrected for compressibility effects
  35. ICE-T
    • Image Upload
    • IAS is ≤ CAS which is > EAS but < TAS
  36. A _____ is a streamlined shape designed to produce lift as it moves through air
  37. Define mean camber line (MCL)
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    • line drawn from the leading edge to the trailing edge, halfway between the upper and lower surface of the airfoil
  38. Define chordline
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    • Straight line drawn through leading edge to trailing edge on an airfoil
    • Chord is measured from leading edge to trailing edge
  39. Where is the root chord and tip chord measured?
    • Root chord - wing root
    • Tip chord - wing tip
    • Average chord is average of all chords from wing root to wing tip
  40. Define camber
    • Image Upload
    • The curvature of the mean camber line of an airfoil
    • Maximum distance between mean camber line and chord line
  41. Airfoil types:
    • Image Upload
    • symmetric airfoil - zero camber
    • Image Upload
    • Positive - MCL is above chord
    • Image Upload
    • Negative - MCL below chord
  42. Airflow that travels along the span of the wing parallel to leading edge and does not create lift.
    Spanwise flow
  43. Air that flows at right angles to leading edge and produces lift.
    Chordwise flow
  44. Pitch attitude
    angle between longitudinal axis and horizon
  45. Flight path
    apparent movement through an air mass
  46. Relative wind
    motion of the air with respect to the motion of the aircraft
  47. Angle of attack (AOA)
    angle between chordline and relative wind
  48. Angle of incidence
    angle between aircrafts longitudinal axis and chordline of wing
  49. Dihedral angle
    upslope or downslope of wings when viewed from the front
  50. Wingspan
    • Distance wingtip to wingtip
    • T6 - 33'5"
  51. Wing loading
    ratio of an aircrafts weight to the surface area of the wings
  52. Wing taper
    • reduction in the chord for a given airfoil from root to tip
    • provides reduced weight, increased structural stiffness
  53. Aspect ratio
    • the ratio of wingspan to the average chord
    • Glider- high aspect ration; fighter- low aspect ratio
    • T6 - 35:1
  54. The point where all aerodynamic forces are acting.
    • aerodynamic center/ center of lift
    • typically aft of aircrafts CG to provide longitudinal stability around the lateral (pitch) axis
Card Set:
2013-11-16 16:13:33

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