GNAV Wednesday Flashcards
1
Q
Soft iron magnetism
A
Magnet removed. Object loses magnetic properties quickly
2
Q
Hard iron magnetism
A
Magnet removed. Object loses magnetic properties very slowly
3
Q
Geocentric latitude
A
Measured from centre of Earth
4
Q
Geodetic latitude
A
Measured from a specific point on the equator
5
Q
Max difference of latitude/angle =
A
11.6’ at 45 N/S
6
Q
Prime meridian is not a great circle but in fact a
A
Semi great circle
7
Q
Maximum longitude =
A
180⚫️E/W
8
Q
Anti-prime meridian
A
-180⚫️ E/W
9
Q
Max latitude =
A
90⚫️
10
Q
ICAO standard 1 nml =
A
1852m
11
Q
1 nml (in feet) =
A
6080
12
Q
Short distance approximation is less than
A
400nms
