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Flashcards in Aviation Information Deck (148)
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1

What are the two edges of an airfoil called?

- Leading edge
- Trailing edge

2

What are airfoils used for?

To push air to create lift

3

How does an airfoil provide lift?

Based on Benoulli's Principle. The air flows faster over the top of the wing that it does underneath thus creating more pressure under the wing and providing lift.

4

What are two categories of fixed-wing propulsion systems?

- Propellers
- Jets

5

What are the different kinds of weight in aviation?

- Basic weight
- Operating weight
- Gross weight
- Landing gross weight
- Zero fuel weight

6

What is profile drag?

Frictional resistance of helicopter blades passing through the air.

7

What is induced drag?

Airflow circulation around the blades creating vortices.

8

What is flight attitude?

A/C changes it's position in flight

9

What is the axis that runs lengthwise from the nose to the tail?

Longitudinal axis

10

What is the axis that runs wingtip to wingtip?

Lateral axis

11

What is the axis that runs through the A/C's center of gravity?

Vertical axis

12

What is the movement on the A/C's longitudinal axis called?

Roll

13

What is the movement on the A/C's lateral axis called?

Pitch

14

What is the movement on the A/C's vertical axis called?

Yaw

15

What are type types of flight controls?

- Primary
- Secondary

16

What are the 4 main types of helicopter flight controls?

- Cyclic
- Collective
- Anti-torque pedals
- Throttle

17

What does the altimeter measure?

Height above a particular air pressure level and provides altitude above ground.

18

What unit of measure does the altimeter use?

Feet

19

What is the standard barometric pressure?

29.92 inches of mercury

20

What is the standard sea level free air temperature?

59 deg F

21

What are the 5 types of altitude?

1. Indicated Altitude
2. True Altitude
3. Absolute Altitude
4. Pressure Altitude
5. Density Altitude

22

What is indicated altitude?

Uncorrected altitude

23

What is true altitude?

Distance above Mean Sea Level (MSL)

24

What is absolute altitude?

Distance above terrain or ground level

25

What is pressure altitude?

Adjusted to standard barometric pressure (29.92)

26

What is density altitude?

Corrected for variations from standard temperature. Important altitude for A/C's performance.

27

What is hypoxia?

Caused by insufficient oxygen in the bloodstream from unpressurized flight at high altitude

28

What is the FAA regulation for requiring oxygen in flights?

Above 12,500 feet

29

What is the military regulation for requiring oxygen in flights?

Above 10,000 feet

30

What does the Vertical Speed Indicator (VSI) do?

Indicates when the A/C is climbing, descending or level flight.