Air Navigation question bank

Convergency and Conversion Angle: DGCA Air Navigation questions

5 sample questions from Oxford, with the correct answer shown.

Sample questions

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Question 1

The convergency of the meridians through M and N both in the Southern hemisphere is 12°. The rhumb line track from M to N is (249°T). What is the GREAT CIRCLE track from M to N? Hint: In the Southern hemisphere, the great circle curves toward the equator, so it is GREATER than the rhumb line for a westerly track.

Question 2

The convergency of the meridians through M and N both in the Southern hemisphere is 12°. The rhumb line track from M to N is (249°T). What is the GREAT CIRCLE track from N to M? The reciprocal/return journey

Question 3

Position A is at 30°00'S 165°00'E. The great circle bearing of position B also at latitude 30°00'S from A is (100°T). What is the great circle track from B back to A?

Question 4

Position A is at 30°00'S 165°00'E. The great circle bearing from A to position B also at 30°00'S is (100°T). The great circle track from B to A is (260°T). What is the longitude of position B?

Question 5

Position D is at 30°00'N 179°00'W. The rhumb line from D to C is (090°T) due East. The initial great circle track from C to D is (287°T). What is the great circle track from D to C?

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