Navigation Flashcards
What frequency does VOR operate in
VHF
VOR operates on what principle
Phase comparison
What is a VOR radial
Magnetic bearing from the station
Where are lambert projections best suited
Mid latitude regions such as Europe USA and Australia
What is the angle between the earths magnetic field and the horizontal
Dip or Z
When taking off from runway 22 you are given a wind reading of 240/20 what is the approximate crosswind component?
7kts
An aircraft travels north along the same meridian from latitude 20° 15’ south to 10° 00’ south. What is the distance flown in kilometres?
1139km
An aircraft travels north along the same meridian from latitude 30° 15’ south to 14° 00’ south. What is the distance flown in kilometres?
20° 15’ – 10° = 10° 15’
(1 degree of latitude = 60nm)
10 x 60 = 600nm
960 + 15’ (15nm) = 615nm
Answer is in km (1nm = 1.852km)
so 615nm x 1.852 = 1139km
When requesting a magnetic bearing to a VDF station, the correct Q code phrase to use is:
QDM
BEARING TO - No R in it
QTE = True bearing from the station QDR = Magnetic bearing from the station QDM = Magnetic bearing to the station QTF = Position of a station taken by bearings from D/F stations QUJ = True bearing to the station
When requesting a magnetic bearing from a VDF station, the correct Q code phrase to use is:
QDR
BEARING F(R)OM - It has an R in it
QTE = True bearing from the station QDR = Magnetic bearing from the station QDM = Magnetic bearing to the station QTF = Position of a station taken by bearings from D/F stations QUJ = True bearing to the station
An aircraft travels north along the same meridian from latitude 40° 15’ north to 24° 15’ north. What is the distance flown in nautical miles?
960nm
An aircraft travels north along the same meridian from latitude 40° 15’ south to 24° 15’ south. What is the distance flown in kilometres?
40° 15’ – 24° 15’ = 16°
(1 degree of latitude = 60nm)
16 x 60 = 960nm
If the scale of a chart is given as 1:500,000, how many km does 5cm represent?
25km
5 / 100,000 = 0.00005
0.00005 * 500,000 = 25
or just * by 5
A common chart scale for general aviation flying is 1:500 000.
This scale means that 1cm = 500 000cm on the earth’s surface.
The Lambert conformal conic chart was devised to be best suited for coverage of which areas of the Earth?
mid-latitudes
A line of latitude
varies from 0° at the equator to 90° North and South at the poles
The longitude of a point has a shorter angular distance measured east/west from the Greenwich meridian.
An aircraft tracking 240° with 10° right drift; variation from the chart is 5°E and the compass correction card indicates 3°E. What is the required compass heading?
222°
240°- 10° right drift = 230°
230° - 5°E = 225°
225° - 3°E = 222°
When requesting a true bearing to a VDF station, the correct Q code phrase to use is:
QUJ
QTE = True bearing from the station QDR = Magnetic bearing from the station QDM = Magnetic bearing to the station QTF = Position of a station taken by bearings from D/F stations QUJ = True bearing to the station
The longitude of a point is best described as the:
shorter angular distance measured east/west from the Greenwich meridian
The longitude of a point has a shorter angular distance measured east/west from the Greenwich meridian.
With the sun coming up, sunrise is said to occur when the:
upper limb of the sun (the first bit to become visible) is on the observer’s horizon
A magnetic compass is designed to use the horizontal component, of the earth’s magnetic field. The compass will be most accurate:
at low latitudes
Dip is the angle between the horizontal and total components of the earth’s magnetic field.
As latitude increases the horizontal component of the earth’s magnetic field decreases and the dip increases.
At the magnetic equator dip is 0° and at the magnetic poles dip is at its maximum of 90°.
The compass is most accurate at low latitudes where dip is lowest.
With the sun’s altitude decreasing, sunset occurs when the:
upper limb of the sun is on the observer’s horizon
