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Flashcards

10. Navigation Charts

Ella Davies GNAV Inglês 51 flashcards

Flashcards do conjunto (51)

  1. 1MERCATOR: how do rhumb lines appearas straight lines
  2. 2MERCATOR: what type of projection is usedcylindrical projection
  3. 3MERCATOR: how is conformality acheivedspacings of parallels of latitude adjusted
  4. 4MERCATOR: where is the parallel of origin/ point of tangency?at the equator
  5. 5MERCATOR: how do meridians appearas straight lines
  6. 6MERCATOR: ABBA formulaDenAcosB = DenBcosA
  7. 7MERCATOR: what can be said about chart convergencyit is constant
  8. 8MERCATOR: where is chart convergency correctat the equator (+/- 8˚ = to approx 480 nm)
  9. 9MERCATOR: what are the common usesnautical charts
    meterological charts
    aviation charts in the tropics
  10. 10MERCATOR: what can you say about the GCthey are concave to the equator and convex to the poles above 10˚ latitude
  11. 11MERCATOR: what is important to remember about the GC when it comes to the tropics/ equatorthey appear as straight lines, so between 10˚ N and 10˚ S, the straight line will represent a GC
  12. 12MERCATOR: what can be said about the Lines of Longitudethey are parallel and equally spaced
  13. 13MERCATOR: what can be said about the parallels of latitudethey are parallel and unequally spaced
  14. 14MERCATOR: how far N/S is it possible to mapno further than 70˚N/S
  15. 15what do radio waves travel alonggreat circles.
    shortest route from one place to another
  16. 16MERCATOR: where does EC=CCat the equator
  17. 17MERCATOR: what can be said about the representation of shapes and areasalmost exact around the equator and low latitudes, however, above 60 ˚ N/S scale has changed by a scale of 2 so the representation of areas and shapes is poor
  18. 18LAMBERTS: what type of projection is usedsimple conical
  19. 19LAMBERTS: what is usually used as the Parallel of OriginLine of Latitude or small circle
  20. 20LAMBERTS: What is the chart convergencyconstant
  21. 21LAMBERTS: where are CC and Scale both correctat the parallel of Origin
  22. 22LAMBERTS: how are meridians representedas straight lines
  23. 23LAMBERTS: LAMBERTS: Sin(PO) can be referred to as...Constant of the cone
    N
    Convergence factor
  24. 24LAMBERTS: how can you calculate the parallel of Latitudeinverse sin of n
  25. 25LAMBERTS: what are standard parallelspoints where the cone inside touches the reduced earth
  26. 26LAMBERTS: what does the scale do between the standard parallelsthe scale contracts
  27. 27LAMBERTS: where is the scale correctat the standard of parallels
  28. 28LAMBERTS: where is the POhalf way between the 2 poles in theory, however in practice it is usually closer to the pole of projection
  29. 29LAMBERTS: in the rule of sixths what is the max spread of latitude24˚
  30. 30LAMBERTS: what can you say about the GC in regard to the POthe GC is concave to the PO
    BUT IS DRAWN AS A STRAIGHT LINE
  31. 31LAMBERTS: what does the scale do outside of the Standard Parallelsit expands
  32. 32LAMBERTS: where are the shapes and areas considered okay in the rule of sixthsbetween the standards of parallels
  33. 33LAMBERTS: what does the rule of sixths implythat between the standards of parallels is 4/6ths and either side of the Standard of Parallels is 1/6th respectively
  34. 34LAMBERTS: what can you say about the rhumb linesthey are concave to the pole of projection
  35. 35LAMBERTS: what is the formula for CC?CC = ch.long x N
  36. 36LAMBERTS: what can you say about the positions of RL and the corresponding GC when close to the equatorthe RL always lies closer to the equator than the corresponding GC
  37. 37LAMBERTS: what values does N (constant of the cone) lie between0 and 1
    cannot equal either
  38. 38POLAR STEREOGRAPHIC CHARTS: Where is the light placedat the opposite pole
  39. 39POLAR STEREOGRAPHIC CHARTS: what does the scale doexpand away from the pole
  40. 40POLAR STEREOGRAPHIC CHARTS: what does chart convergency =ch.long
  41. 41POLAR STEREOGRAPHIC CHARTS: where is the scale considered constantabove 70˚ Lat
  42. 42POLAR STEREOGRAPHIC CHARTS: what can you say about the position of E/Wit does not change
    EAST RHS
    WEST LHS
  43. 43POLAR STEREOGRAPHIC CHARTS (PSC) : on a N PSC where is 0 E/Wat the bottom, arrow points upwards to the NP
  44. 44POLAR STEREOGRAPHIC CHARTS: where is the scale correctthe pole (point of tangency)
  45. 45POLAR STEREOGRAPHIC CHARTS: what are the usesplotting ang grid
    topographical
    radio facility
    met charts
  46. 46POLAR STEREOGRAPHIC CHARTS: what can be said about the GCit is concave to the pole of projection
  47. 47POLAR STEREOGRAPHIC CHARTS: what can you say about the curvaturecurvature decreases towards the pole of projection
  48. 48POLAR STEREOGRAPHIC CHARTS: how are meridians and anti-merdians drawnas straight lines above the 78˚ lat
  49. 49POLAR STEREOGRAPHIC CHARTS: what can you say about RLconcave to the pole
  50. 50POLAR STEREOGRAPHIC CHARTS: what is the co-lat90-latitude
  51. 51POLAR STEREOGRAPHIC CHARTS: what is the equation for the rate of expansionRoE = Scale at pole x Sec²(0.5 co-lat)

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GNAV FlashCards sobre 10. Navigation Charts, criado por Ella Davies em 29-04-2018.
Criado por
Ella Davies
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