Where is the North?                What North is that one?         How are you going to make it there?But the good questio...
Horizontal Plane > DirectionVertical Plane > Inclination, slope, elevation
Definitions:      Course: Intendend track      Heading: Directions in which the fore-           and-aft axis of the aircra...
TRUE DIRECTION: Any direction in reference to the     directions of the Geographic North Pole (True     North = TN)
MAGNETIC DIRECTION   MAGNETIC FIELD:        - 2 Magnetic Poles not co-located with the               Geographic (Not antip...
MAGNETIC DIRECTION:   MAGNETIC FIELD:        - ANGLE OF DIP: Angle crated between the              horizontal (Parallel to...
MAGNETIC DIRECTION: Any direction in reference     to the direction of the Magnetic North Pole     (Magnetic North Pole = ...
COMPASS DIRECTION: Any direction in reference     to the Compass North (Compas North Pole = CN)            Due to the fact...
GRID DIRECTION: Any direction in reference to the      Grid North (GN).      The Grid North is associated with the Grid   ...
RELATIVE DIRECTION: Any direction, measured     angularly, in reference to the aircraft’s     longitudinal axis
TRUE BEARING = TRUE HEADING + RELATIVE BEARING                  TB = TH + RB
Heading              H       TH = True HeadingTrack                T       MT = Magnetic TrackBearing              B      ...
DEFINITION: Relationship between a direction given in      term of True and terms of Magnetic      Relationship between th...
MH = TH + VarE   MH = TH - VarE
Variation WEST, Magnetic BESTVariation EAST, Magnetic LEAST
DEFINITION: Relationship between a direction given      in relation to the MN and the same given in      relation to the C...
DEVIATION WEST - COMPASS BESTDEVIATION EAST - COMPASS LEAST
DEFINITION: Defined for a position, is the    angular difference between the direction    towards the Grid North and the M...
DEFINITION: In a position, is the angular    difference between the Grid North and the    Magnetic North in that position....
3.Directions
3.Directions
3.Directions
3.Directions
3.Directions
3.Directions
3.Directions
3.Directions
3.Directions
3.Directions
Upcoming SlideShare
Loading in …5
×

3.Directions

1,103 views

Published on

Ppt presentation given in class

Published in: Technology, Business
  • Be the first to comment

  • Be the first to like this

3.Directions

  1. 1. Where is the North? What North is that one? How are you going to make it there?But the good question is….. Do you really know where you are going?
  2. 2. Horizontal Plane > DirectionVertical Plane > Inclination, slope, elevation
  3. 3. Definitions: Course: Intendend track Heading: Directions in which the fore- and-aft axis of the aircraft is pointing Track: Flight path that the aircraft has followed (Track Made Good)
  4. 4. TRUE DIRECTION: Any direction in reference to the directions of the Geographic North Pole (True North = TN)
  5. 5. MAGNETIC DIRECTION MAGNETIC FIELD: - 2 Magnetic Poles not co-located with the Geographic (Not antipodal) - “Meridians” & “Parallels”. Not homogeneous! (Areas of magnetic disturbance)
  6. 6. MAGNETIC DIRECTION: MAGNETIC FIELD: - ANGLE OF DIP: Angle crated between the horizontal (Parallel to the earths surface) and vertical (Perpendicular to the Earths surface) components of the magnetic field. Isoclinal / Aclinic lines Horizontal component = Magnetic direction
  7. 7. MAGNETIC DIRECTION: Any direction in reference to the direction of the Magnetic North Pole (Magnetic North Pole = MN)
  8. 8. COMPASS DIRECTION: Any direction in reference to the Compass North (Compas North Pole = CN) Due to the fact of the compass being imperfect and to the possible electromagnetic fields induced on the needle, the compass will not indicate the real magnetic north > COMPASS NORTH
  9. 9. GRID DIRECTION: Any direction in reference to the Grid North (GN). The Grid North is associated with the Grid Reference Meridian (Grid Datum Meridian). GRID: Parallel lines, printed on a chart, that are parallel to the Grid Reference Meridian.(Widely used on Polar Stereographic charts
  10. 10. RELATIVE DIRECTION: Any direction, measured angularly, in reference to the aircraft’s longitudinal axis
  11. 11. TRUE BEARING = TRUE HEADING + RELATIVE BEARING TB = TH + RB
  12. 12. Heading H TH = True HeadingTrack T MT = Magnetic TrackBearing B RB = Relative BearingCourse C GC = Grid Course Course means intended track. But , when crourse is used, track is only used to refer the path already flown If not specifying a particular type of line: DIRECTION (TD, MD, GD)
  13. 13. DEFINITION: Relationship between a direction given in term of True and terms of Magnetic Relationship between the direction of the Geographical Meridian and the Magnetic Meridian through the same place. Isogonal/Agonic lines EASTERLY : If MN seems to lie to the east of the TN WESTERLY: If MN seems to lie to the west of the TN
  14. 14. MH = TH + VarE MH = TH - VarE
  15. 15. Variation WEST, Magnetic BESTVariation EAST, Magnetic LEAST
  16. 16. DEFINITION: Relationship between a direction given in relation to the MN and the same given in relation to the CN. Relationship between the direction of the Magnetic North and the one to which the compass points for any given position on the Earth. Measured in degree from the Magnetic North MN
  17. 17. DEVIATION WEST - COMPASS BESTDEVIATION EAST - COMPASS LEAST
  18. 18. DEFINITION: Defined for a position, is the angular difference between the direction towards the Grid North and the Meridian in that position. Angular difference between GN and TN on a particular position. East: TN lies to the east of GN West: TN lies to the west of GN
  19. 19. DEFINITION: In a position, is the angular difference between the Grid North and the Magnetic North in that position. Includes both, Grid Convergence and Magnetic Variation (GRIV)ISOGRIVES: Lines joining positions with the same grivation

×