SPL - Navigation

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This flashcard set covers university-level aeronautical navigation concepts, focusing on key terms like true course, ground speed, and wind correction angles. It delves into calculating distances, times, and flight paths, as well as interpreting navigation charts and understanding wind effects on aircraft. Pilots and aviation students will benefit from this set to enhance their navigation skills and accuracy in flight planning.

Karten

Lernende

Sprache

Englisch

Kategorie

Technik

Stufe

Universität

Erstellt / Aktualisiert

01.02.2025 / 05.05.2025

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Cartes-fiches

Which statement is correct with regard to the polar axis of the Earth?

The polar axis of the Earth crosses the geographic South Pole and the geographic North Pole and is at an angle of 23.5° to the plane of the equator

The polar axis of the Earth crosses the magnetic south pole and the magnetic north pole and is perpendicular to the plane of the equator

The polar axis of the Earth crosses the magnetic south pole and the magnetic north pole and is at an angle of 66.5° to the plane of the equator

The polar axis of the Earth crosses the geographic South Pole and the geographic North Pole and is perpendicular to the plane of the equator

Which approximate, geometrical form describes the shape of the Earth best for navigation systems?

Flat plate

Sphere of ecliptical shape

Perfect sphere

Ellipsoid

The circumference of the Earth at the equator is approximately...

40000 NM.

21600 NM.

12800 km.

10800 km.

The shortest distance between two points on Earth is represented by a part of...

a parallel of latitude.

a great circle.

a small circle.

a rhumb line.

What distance corresponds to one degree difference in latitude along any degree of longitude?

1 NM

60 NM

30 NM

60 km

What is the distance between the two parallels of longitude 150°E and 151°E along the equator?

111 NM

60 NM

60 km

1 NM

What is the great circle distance between two points A and B on the equator when the difference between the two associated meridians is exactly one degree of longitude?

400 NM

60 NM

216 NM

120 NM

Which statement about a rhumb line is correct?

The center of a complete cycle of a rhumb line is always the Earth's center.

The shortest track between two points along the Earth's surface follows a rhumb line.

A rhumb line is a great circle intersecting the equator with 45° angle.

A rhumb line cuts each meridian at the same angle.

Point A on the Earth's surface lies exactly on the parallel of latitude of 47°50'27''N. Which point is exactly 240 NM north of A?

49°50'27''N

51°50'27'N

43°50'27''N

53°50'27''N

What is the distance between the parallels of latitude 48°N and 49°N along a meridian line?

1 NM

111 NM

60 NM

10 NM

Where are the two polar circles?

23.5° north and south of the equator

20.5° south of the poles

At a latitude of 20.5°S and 20.5°N

23.5° north and south of the poles

What is the difference in time when the sun moves 20° of longitude?

0:20 h

0:40 h

1:00 h

1:20 h

What is the difference in time when the sun moves 10° of longitude?

0:30 h

0:04 h

0:40 h

1:00 h

UTC is...

a local time in Central Europe.

a zonal time.

local mean time at a specific point on Earth.

an obligatory time used in aviation.

With Central European Summer Time (CEST) given as UTC+2, what UTC time corresponds to 1600 CEST?

1400 UTC.

1600 UTC.

1500 UTC.

1700 UTC.

With Central European Time (CET) given as UTC+1, what UTC time corresponds to 1700 CET?

1800 UTC.

1500 UTC.

1600 UTC.

1700 UTC.

The term 'civil twilight' is defined as...

the period of time before sunrise or after sunset where the midpoint of the sun disk is 6 degrees or less below the true horizon.

the period of time before sunrise or after sunset where the midpoint of the sun disk is 12 degrees or less below the true horizon.

the period of time before sunrise or after sunset where the midpoint of the sun disk is 6 degrees or less below the apparent horizon.

the period of time before sunrise or after sunset where the midpoint of the sun disk is 12 degrees or less below the apparent horizon.

The term 'True Course' (TC) is defined as...

the direction from an arbitrary point on Earth to the geographic North Pole.

the angle between magnetic north and the course line.

the angle between true north and the course line.

the direction from an arbitrary point on Earth to the magnetic north pole.

The angle between the magnetic course and the true course is called...

variation.

deviation.

WCA.

inclination.

What could be a reason for changing the runway indicators at aerodromes (e.g. from runway 06 to runway 07)?

The magnetic deviation of the runway location has changed

The magnetic variation of the runway location has changed

The direction of the approach path has changed

The true direction of the runway alignment has changed

The term 'isogonal' or 'isogonic line' is defined as a line on an aeronautical chart, connecting all points with the same value of...

heading.

inclination.

variation.

deviation.

Which are the official basic units for horizontal distances used in aeronautical navigation and their abbreviations?

Nautical miles (NM), kilometers (km)

Yards (yd), meters (m)

feet (ft), inches (in)

Land miles (SM), sea miles (NM)

5500 m equal...

7500 ft.

18000 ft.

10000 ft.

30000 ft.

How are rhumb lines and great circles depicted on a direct Mercator chart?

Rhumb lines: straight lines, Great circles: straight lines

Rhumb lines: curved lines, Great circles: curved lines

Rhumb lines: curved lines, Great circles: straight lines

Rhumb lines: straight lines, Great circles: curved lines

The distance between two airports is 220 NM. On an aeronautical navigation chart the pilot measures 40.7 cm for this distance. The chart scale is...

1 : 250000.

1 : 500000.

1 : 1000000.

1 : 2000000.

Which are the properties of a Mercator chart?

The scales increases with latitude, great circles are depicted as straight lines, rhumb lines are depicted as curved lines

The scales increases with latitude, great circles are depicted as curved lines, rhumb lines are depicted as straight lines

The scale is constant, great circles are depicted as curved lines, rhumb lines are depicted as straight lines

The scale is constant, great circles are depicted as straight lines, rhumb lines are depicted as curved lines

Which are the properties of a Lambert conformal chart?

Rhumb lines are depicted as straight lines and the chart is conformal

The chart is conformal and nearly true to scale

Great circles are depicted as straight lines and the chart is an equal-area projection

The chart is conformal and an equal-area projection

An aircraft travels 100 km in 56 minutes. The ground speed (GS) equals...

93 kt.

58 km/h.

198 kt.

107 km/h.

Given: True course from A to B: 352°. Ground distance: 100 NM. GS: 107 kt. Estimated time of departure (ETD): 0933 UTC. The estimated time of arrival (ETA) is...

1045 UTC.

1029 UTC.

1146 UTC.

1129 UTC.

Given: True course from A to B: 283°. Ground distance: 75 NM. TAS: 105 kt. Headwind component: 12 kt. Estimated time of departure (ETD): 1242 UTC. The estimated time of arrival (ETA) is...

1330 UTC

1320 UTC

1356 UTC

1430 UTC

What is the required flight time for a distance of 236 NM with a ground speed of 134 kt?

0:46 h

1:46 h

1:34 h

0:34 h

Given: True course from A to B: 250°. Ground distance: 210 NM. TAS: 130 kt. Headwind component: 15 kt. Estimated time of departure (ETD): 0915 UTC. The estimated time of arrival (ETA) is...

1105 UTC.

1052 UTC.

1005 UTC.

1115 UTC.

An aircraft is flying at a pressure altitude of 7000 feet with an outside air temperature (OAT) of +21°C. The QNH altitude is 6500 ft. The true altitude equals...

7000 ft.

6750 ft.

6250 ft.

6500 ft.

An aircraft is flying at FL 75 with an outside air temperature (OAT) of -9°C. The QNH altitude is 6500 ft. The true altitude equals is:

7000 ft

6500 ft

6250 ft

6750 ft

(See attachment EC-90-001-v1) The GNSS readout during a flight is 51.83°N, 12.19°E. What is the aircraft position?

Overhead the village of Quellendorf

Overhead EDAD

Overhead the village of Streez

Overhead EDCK

An aircraft is following a true course (TC) of 040° at a constant true airspeed (TAS) of 180 kt. The wind vector is 350°/30 kt. The wind correction angle (WCA) equals...

3° right.

7° left.

3° left.

7° right.

Given: True course: 270°. TAS: 100 kt. Wind: 090°/25 kt. Distance: 100 NM. The ground speed (GS) equals...

125 kt.

120 kt.

117 kt.

131 kt.

An aircraft is following a true course (TC) of 040° at a constant true airspeed (TAS) of 180 kt. The wind vector is 350°/30 kt. The wind correction angle (WCA) equals...

- 9°

- 7°

+ 11°

+ 5°

An aircraft is following a true course (TC) of 220° at a constant TAS of 220 kt. The wind vector is 270°/50 kt. The ground speed (GS) equals...

255 kt.

185 kt.

170 kt.

135 kt.

Given: True course: 255°. TAS: 100 kt. Wind: 200°/10 kt. The true heading equals...

275°.

250°.

245°.

265°.

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SPL - Navigation

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