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Question 1

Define Conformal

Answer 1

All angles and bearings on the Earth are accurately represented

Question 2

Define Graticule

Answer 2

Mesh of parallels of latitude and meridians

Question 3

Define Meridian

Answer 3

Semi-great circle joining North and South geographic poles

Question 4

Define Parallels of latitude

Answer 4

Small circle on Earth’s surface such that the plane lies parallel to the plane of the equator

Question 5

Define Rhumb Line

Answer 5

Lines on the Earth’s surface which cross all meridians at same angle such that true direction remains unchanged

Question 6

Define Small Circle

Answer 6

Any circle drawn on Earth’s surface such that the plane does not pass through the Earth’s centre.

Question 7

Define Great Circle

Answer 7

Any circle drawn on the Earth’s surface such that the plane of the circle passes through the Earth’s centre.

Question 8

Define Chart

Answer 8

Projection on which additional information is provided relating to a particular need.

Question 9

Define Map

Answer 9

Representations of Earth’s surface overlaid with specific info, typically essential geographical and topographical features

Question 10

Define Equator

Answer 10

Great circle drawn on Earth’s surface which lies midway between the geographic poles, perpendicular to the axis of rotation. Forms the datus against which all other parallels of latitude are numbered.

Question 11

What should be taken account of when using maps?

Answer 11

Use of True North
Issue date
Typre of projection
Scale
Suitability of accuracy

Question 12

What information could be on a map?

Answer 12

Lattitude
Longitude
Topography
Geographic data
Landmass outlines
Relief
Divisions of Airspace
Danger areas

Question 13

What is the effect of compression?

Answer 13

Polar diameter is 27 stature miles shorter than equatorial diameter

Question 14

Define Air Speed

Answer 14

The speed at which an aircraft moves through the air mass it is flying through.

Question 15

How is indicated air speed measured?

Answer 15

Pitot tube in the direction of airflow senses total pressure.
Static pressure value is removed in static vent, leaving only the dynamic pressure

Question 16

What is static pressure?

Answer 16

The pressure exerted equally in all directions at any point in the atmosphere.

Question 17

What is dynamic pressure?

Answer 17

Pressure in relation to movement

Question 18

What is a nautical mile?

Answer 18

Length of an arc of a great circle subtended by one minute of the angle from the Earth’s centre

Question 19

In feet, what is the length of nm, sm and km?

Answer 19

nm - 6078ft/6080ftuk
sm - 5280ft
km - 3280ft

Question 20

What errors might indicated air speed (IAS) have?

Answer 20

Instrument: Faults in the construction of the indicator.
Position: Caused by poor siting of the Pitot tube.
Density: temperature will change air density affecting pressure.
Compressibility: at excess of 300kts the air ahead of the aircraft becomes compressed.

Question 21

What is Rectified Air Speed (RAS)?

Answer 21

IAS corrected for instrument and position error.

Question 22

What is True Air Speed (TAS)?

Answer 22

RAS corrected for density and compressibility error.

Question 23

What is groundspeed?

Answer 23

TAS corrected for wind.

The speed at which an aircraft travels over the ground.

Question 24

Triangle of Velocities

Answer 24

Air velocity > Air position
Ground velocity&raquo_space; ground position
Wind velocity&raquo_space;>

Question 25

Three map formats?

Answer 25

Mercator projection
Transverse Mercator
Lambert’s Conic Projection