Fixed-Wing Aerodynamics Flashcards

1
Q

In fluid, total pressure is the sum of?

A

Static and dynamic pressure

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2
Q

Factors affecting the lift of a wing? (4)

A
  • Velocity of flow
  • Geometry of airfoil
  • AOA of airfoil
  • Wing area
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3
Q

Equivalent airspeed correct for density altitude becomes?

A

True Airspeed

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4
Q

Calibrated airspeed correct for compressibility effects becomes?

A

Equivalent Airspeed

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5
Q

The Bernoulli’s Principle states that when the velocity of the flow increases, the pressure?

A

Decreases

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6
Q

What are carnards primarily used for?

A

Pitch control

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7
Q

The continuity principle implies that for a given flow through a tube, when the cross-sectional area of the tube increases, the velocity of the flow:?

A

Decreases

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8
Q

A Mach wave is formed when an object is travelling?

A

More than Mach 1

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9
Q

Lift is generated because?

A

The velocity of flow of air is faster on the upper surface of the airfoil than the lower surface

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10
Q

What are the fundamental physical principles that equations of aerodynamics are based on?

A
  • Conservation of Mass
  • Conservation of Momentum
  • Conservation of Energy
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11
Q

The basis of airspeed measure is the difference between?

A

Total Pressure and Static Pressure

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12
Q

What measures airspeed?

A

Pitot-static tube

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13
Q

As Altitude increase?

A
  • Density Decrease
  • Pressure Decrease
  • Temperature Decrease, Constant, then Increase
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14
Q

The fighter engine is often contained within?

A

The fuselage

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15
Q

The more stable an aircraft is, the more/less agile it is?

A

Less

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16
Q

Which provides yaw stability?

A

Vertical Tail

17
Q

Induced drag is due to?

A

Component of lift in the opposite direction of motion

18
Q

Skin friction drag is due to?

A

Air flowing over the rough surface of aircraft

19
Q

Form drag is due to?

A

Frontal area of object

20
Q

What is not a type of drag?

A

Dynamic drag

21
Q

Which does not affect lift of an airfoil?

A

Weight of aircraft

22
Q

The chord is?

A

An imaginary straight line connecting the trailing and leading edges

23
Q

The mean camber line is?

A

The locus of points halfway between upper and lower surfaces of an airfoil

24
Q

For Mach less than 0.3, compressibility of air need/need not be taken into account?

A

No need

25
Q

Which is not a lift increasing device?

A

Vertical tail

26
Q

Main surface to effect:

A
  • Yaw control - Rudders
  • Roll control- Ailerons
  • Pitch control- Elevators