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11 Cards in this Set
- Front
- Back
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Define a great circle.
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Great circle: circle formed by continuing the arc inscribed by connecting the shortest distance between two points on a sphere. It is a circle whose plane passes through the earth's center, dividing the earth into two equal halves.
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State why a great circle route is desirable for aircraft navigation.
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It is the shortest distance between two points on a sphere. Only one parallel, the equator, is a great circle. All meridians are great circles.
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Name the two main types of Lambert conformal charts.
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Operational Navigation Chart
Tactical Pilotage Chart |
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Describe the characteristics of the two main types of Lambert Conformal charts.
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ONC: provides worldwide coverage, scale 1:1,000,000
TPC: provides worldwide coverage, scale 1:500,000 |
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Define heading, course, track
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Heading: the angular distance of the aircrafts longitudinal axis from a reference. (direction the nose of the aircraft is pointed)
Course: the aircraft's intended flight path. Track: the aircraft's actual flight path over the ground. |
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Describe the relationship between heading, course, and track
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Heading: where your nose points
Course: intended flight path Track: actual flight path (what's behind you) |
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Define magnetic variation
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The angular distance between True North and Magnetic North from any given position on the Earth's surface.
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Using magnetic variation, convert between true directions and magnetic directions.
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MC=TC-(East Variation)
MC=TC+(West Variation) |
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Explain the global timekeeping system.
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Local Mean Time is converted to a common reference. This reference is the time at the prime meridian (passes through Greenwich, England) called GMT or Zulu time. This is to allow for coordination on a global scale.
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State where a particular location's zone description can be obtained.
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IFR Enroute Supplement aftr the Lat and Long.
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Apply standard zone description to convert betwen Greenwich Mean Time and local mean time.
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Zulu=Local-(ZD)
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