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Radio Navigation

Radio Navigation. HDG 105° DME20 ALT = 5000ft Radial 140 Incercept: 345° CRS TO Do I turn left or right? Do I fly heading 315° or 015°?. Effective use of NAV instruments. Radio Navigation. For a successful navigation we need to: Understand how to use a map

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Radio Navigation

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  1. Radio Navigation

  2. HDG 105° DME20 ALT = 5000ft Radial 140 Incercept: 345° CRS TO Do I turn left or right? Do I fly heading 315° or 015°? Effective use of NAV instruments

  3. Radio Navigation For a successful navigation we need to: Understand how to use a map Understand the function of an OBI/RMI Understand the terminology Only after we can be fully able to navigate

  4. How to use a map

  5. How to use a map

  6. Understand the RMI

  7. Understand the RMI

  8. Understand the RMI

  9. Terminology

  10. Terminology

  11. Terminology

  12. Terminology

  13. Basic Rule for navigation • Consider the compass instrument as a map. • (needle) arrow ALWAYS FALL (RMI). • (needle) tail ALWAYS RISE (RMI). • The station is ALWAYS IN THE CENTER. • The aircraft is ALWAYS ON THE TAIL.

  14. Omni Bearing Indicator Basic Rule for navigation

  15. Omni Bearing Indicator Let’s remove numbers for the purpose of exercise Using OBI for navigation

  16. I cannot determine accurate position whitout centering Accurate position is needed to carry out accurate navigation Using OBI for navigation

  17. Step 1: center the instrument. It is not important if it falls To or From Using OBI for navigation

  18. Where is the station? Using OBI for navigation

  19. Where is the station? Always in the center of the instrument! Using OBI for navigation

  20. Where is the aircraft? Using OBI for navigation

  21. Where is the aircraft? Always on the tail of the needle! Which one is the tail? Using OBI for navigation

  22. Where is the aircraft? Always on the tail of the needle! Look at the pointer TO/FROM Using OBI for navigation

  23. I have no indication about the heading of the aircraft. Which radial do I want to intercept? Using OBI for navigation

  24. Find the route I want to follow Using OBI for navigation

  25. Find the route I want to follow Using OBI for navigation

  26. bring selected route parallel from the center of the instrument, and find the desired heading Using OBI for navigation

  27. Now start turning onto the new heading frist. Then move the OBS to select desired radial. Using OBI for navigation

  28. Radio Magnetic Indicator Using RMI for navigation

  29. Radio Magnetic Indicator Let’s remove numbers for the purpose of exercise Using RMI for navigation

  30. Where is the station? Using RMI for navigation

  31. Where is the aircraft? Using RMI for navigation

  32. The heading of the aircraft is always upward. Now find the radial to intercept. Using RMI for navigation

  33. Visualise the range of possible headings to intercept as desired Using RMI for navigation

  34. Note that in this example a 90° intercept would bring us intercepting the reciprocal radial. If radial has to be inbound, leave adequate turn distance Using RMI for navigation

  35. Once selected a heading turn onto that heading, the RMI allow monitoring of intercept progress Using RMI for navigation

  36. Coming back on numbers, let’s monitor this intercept I turn 45° on the left, new heading 325° Using RMI for navigation

  37. Coming back to basic rules: Arrows always falls, Tails always rise. Will the needle move toward the blue cross? Using RMI for navigation

  38. Yes, the aircraft is leaving the station behind on the left wing: Arrows always falls, Tails always rise. Using RMI for navigation

  39. To intercept the radial inbound, shall I turn left or right? Using RMI for navigation

  40. I read DME20, and wish to intercept radial 220 at DME 10 From such point I will join a left DME10 arc until radial 090 Can you see the intended track? Advanced Use of RMI

  41. Draw distance circles, my aircraft is at 20DME. Advanced Use of RMI

  42. Draw distance circles, my aircraft is at 20DME. Find desired Radial Advanced Use of RMI

  43. Draw distance circles, my aircraft is at 20DME. Find desired Radial Find desired DME Advanced Use of RMI

  44. Find desired heading to reach the point and see the subsequent turn and arc. Advanced Use of RMI

  45. Find desired heading to reach the point and see the subsequent turn and arc. Advanced Use of RMI

  46. Flying DME arcs. • The direction of the arc as left or right is referred to the direction of turns once established in the arc.

  47. Flying DME arcs. • The direction of initial turn depend from the inbound/outbound arrival. • The arc is flown as straight segments of approximately 10 degrees

  48. Advanced Use of RMI • Enter the 10NM Arc to the left. • Actual DME read 20NM

  49. Advanced Use of RMI • Proceed inbound the station until DME reads 10 plus leading distance. • Make short legs of 10 degrees.

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