Charts Flashcards

(28 cards)

1
Q

What are the two charts approved by ICAO (annex 4)?

A

VFR and IFR charts

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2
Q

Charts usually represents dimensional…?

A

2d dimensional representation of 3d dimension

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3
Q

What are the three main projection type charts?

A

Azimuthal, conical and cylindrical projection

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4
Q

What is cylindrical used for?

A

equator parallel of origin

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5
Q

What is azimuthal used for?

A

pole parallel of origin

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6
Q

What is conical used for?

A

mid-latitude parallel of origin

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7
Q

Why do we use different chart projections?

A

Because each part of the earth is distorted

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8
Q

How many precen within the usable area does it need to be?

A

Less than 1%

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9
Q

How is origin used in azimuthal projection?

A

single point of contact

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10
Q

Projection is set from the opposite point

A

The projection is set from the opposite point of earth’s

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11
Q

How is origin used in cylindrical projection?

A

Great circle of tangency - equatorial region

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12
Q

How is origin used in conical projection?

A

single point contact - projected from centre

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13
Q

What is conformal chart?

A

Any chart on the earth is accurate to the chart - e.g. right-angled graticule etc

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14
Q

what is right-angled graticule?

A

Angle between intersection between longitude and latitude

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15
Q

What is non-constant scale referring to?

A

Distortion of shapes, unequal expansion of scale

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16
Q

What is the operational requirements? (6 phases)

A

-Taxi from aircraft stand to take-off point
- take-off and climb to en-route
- en-route
- descent to approach
- approach to land and missing approach
- Landing and taxi to aircraft stand

17
Q

What is large scale maps?

A

Used for terrestrial navigation - 1: 500 000

18
Q

what is medium scale?

A

for short-range flight e.g. commercial flights - 1:1000000

19
Q

what is small scale

A

intercontinental journey . 1

20
Q

Does IFR charts lack topographical details?

21
Q

What does IFR include?

A

Radio navigation information

22
Q

What is hypsometry?

A

Low-level topographic detail, land elevation

23
Q

In hypsometry, what is contour lines?

A

Lines joining same height

24
Q

In hypsometry, what is spot height

A

Small black dot, top of a hill

25
In hypsometry, what is later tinting?
changes in elevation
26
What projection is direct mercator?
cylindrical projection
27
What projection is Lambert's Canonical Conformal
Conical projection
28
What projection is Polar stereographic?
Azimuthal