What are the types of navigation?
Position fixes on a nav map
Dead reckoning (DR)- Known position start/ time, calculate the time
We do a mixture
What is flight plan track
Straight line point A to B
How do u describe the earth?
An Oblate spheroid, earth not a perfect sphere
Which way does earth rotate ?
West to East
What is an earth meridian?
One complete meridian is True north to true south
Each meridian is the same distance from start to finish
What is latitudes?
Are they the same lengths?
Rune West to East, not the same distance
What is the prime meridian?
Prime or main meridian running through greenich 0*
How does numbering system of longitudes work?
angle they make with the prime meridian
What is the anti meridian?
180* East of prime meridian and 180*. west of the prime meridian (Same line)
How long is 1 minute of lattitude?
1nm= 1,852 m
How long is one degree of lattitude?
60nm
What are rhumb lines?
If you cut each meridian at the same angle you will eventually reach the pole
Crosses meridian at equal and constant angle
What are great circles?
If you take take a globe and stretch a string between two points it will be the shortest distance over the surface between those points
- Meridians and equator are greta circles and there is an infinite number of them
What are small circles?
Is a circle which does not pass through the centre of the sphere
Parallels of lattitude excluding the equator is an example
When reading a compass what is saying to remeber where to Plus or minus magnetic variation?
East is least, west is best
Compass deviations. What are they caused by?
Each aircraft own electrical field through presence of electrical circuits and metal components
What is compass swing?
Calibration of engineers of compass with all electricl equipment giving a plan to a deviation card
How to find actual wind, what do we need
GS
HDG Held
TMG
TAS
