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11 Cards in this Set

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 Define a great circle. 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. State why a great circle route is desirable for aircraft navigation. 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. Name the two main types of Lambert conformal charts. Operational Navigation Chart Tactical Pilotage Chart Describe the characteristics of the two main types of Lambert Conformal charts. ONC: provides worldwide coverage, scale 1:1,000,000 TPC: provides worldwide coverage, scale 1:500,000 Define heading, course, track 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. Describe the relationship between heading, course, and track Heading: where your nose points Course: intended flight path Track: actual flight path (what's behind you) Define magnetic variation The angular distance between True North and Magnetic North from any given position on the Earth's surface. Using magnetic variation, convert between true directions and magnetic directions. MC=TC-(East Variation) MC=TC+(West Variation) Explain the global timekeeping system. 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. State where a particular location's zone description can be obtained. IFR Enroute Supplement aftr the Lat and Long. Apply standard zone description to convert betwen Greenwich Mean Time and local mean time. Zulu=Local-(ZD)