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C152 Emergency Checklist > Symbols, Abbreviations and Terminology > Flashcards

Flashcards in Symbols, Abbreviations and Terminology Deck (36):
1

Knots Calibrated Airspeed (KCAS)

Indicated airspeed contracted for position and instrument error and expressed in knots. Knots calibrated airspeed is equal to KTAS in standard atmosphere at sea level.

2

Knots Indicated Airspeed (KIAS)

The speed shown on the airspeed indicator and expressed in knots.

3

Knots True Airspeed (KTAS)

The airspeed expressed in knots relative to undisturbed air which is KCAS corrected for altitude and temperature.

4

Maneuvering Speed (Va)

The maximum speed at which you may use abrupt control travel.

5

Maximum Flap Extended Speed (Vfe)

The highest speed permissible with wing flaps in a prescribed extended position.

6

Maximum Structural Cruising Speed (Vno)

The speed that should not be exceeded except in smooth air, then only with caution.

7

Never Exceed Speed (Vne)

The speed limit that may not be exceeded at any time.

8

Stalling Speed (Vs)

The minimum steady flight speed at which the airplane is controllable.

9

Stalling Speed - Full Flaps (Vso)

The minimum steady flight speed at which the airplane is controllable in the landing configuration at the most forward centre of gravity.

10

Best Angle-of-Climb Speed (Vx)

The speed which results in the greatest gain of altitude in a given horizontal distance.

11

Best Rate-of-Climb Speed (Vy)

The speed which results in the greatest gain of altitude in a given time.

12

Outside Air Temperature (OAT)

The free air static temperature. It is expressed in either degrees Celsius or degrees Fahrenheit.

13

Standard Temperature

15°C at S.L. pressure altitude and decreases by 2°C for each 1,000' of altitude.

14

Pressure Altitude

The altitude read from an altimeter when the altimeter
s barometric scale has been set to 29.92" Hg (1013 mb).

15

Brake Horsepower (BHP)

The power developed by the engine.

16

Revolutions Per Minute (RPM)

Engine speed.

17

Static RPM

Engine speed attained during a full-throttle engine runup when the airplane is on the ground and stationary.

18

Demonstrated Crosswind Velocity

The velocity of the crosswind component for which adequate control of the airplane during takeoff and landing was actually demonstrated during certification tests. The value shown is not considered to be limiting.

19

Usable Fuel

The fuel available for flight planning.

20

Unusable Fuel

The quantity of fuel that can not be safely used in flight.

21

Gallons Per Hour (GPH)

The amount of fuel (in gallons) consumed per hour.

22

Nautical Miles Per Gallon (NMPG)

The distance (in nautical miles) which can be expected pie gallon of fuel consumed at a specific engine setting and/or flight configuration.

23

G

Acceleration due to gravity.

24

Reference Datum

An imaginary vertical plane from which all horizontal distances are measured for balance purposes.

25

Station

A location along the airplane fuselage given in terms of the distance from the reference datum.

26

Arm

The horizontal distance from the reference datum to the centre of gravity (C.G.) of an item.

27

Moment

The product of the weight of an item multiplied by its arm.

28

Centre of Gravity (C.G.)

The point at which an airplane, or equipment, would balance if suspended. Its distance from the reference datum is found by dividing the total moment by the total weight of the airplane.

29

Centre of Gravity Arm (C.G. Arm)

The arm obtained by adding the airplane's individual moments and dividing the sum by the total weight.

30

Centre of Gravity Limits (C.G. Limits)

The extreme centre of gravity locations within which the airplane must be operated at a given weight.

31

Standard Empty Weight

The weight of a standard airplane, including unusable fuel, fuel operating fluids and full engine oil.

32

Useful Load

The difference between ramp weight and the basic empty weight.

33

Maximum Ramp Weight

The maximum weight approved for ground maneuver. (It includes the weight of start, taxi, and runup fuel).

34

Maximum Takeoff Weight

The maximum weight approved for the start of the takeoff run.

35

Maximum Landing Weight

The maximum weight approved for the landing touchdown.

36

Tare

The weight of chocks, clocks, stand, etc. used when weighing an airplane, and is included in the scale readings. Tare is deducted from the scale reading to obtain the actual (net) airplane weight.