Q1. What is the great circle track (measured from the starting position) from 70S 030 W to 70 S 060E?
132° – Calculated: 132.3° -> 132. Lat -70, dLong 90, Dir E.
Q2. Find a great circle track from A (50N 170E) to B (50 N 165 W).
080° – Calculated: 80.4° -> 80. Lat 50, dLong 25, Dir E.
Q3. Find Great Circle Track from A (40S 160W) to B (40S 164E)
258° – Calculated: 258.4° -> 258. Lat -40, dLong 36, Dir W.
Q4. Which of the following latitude will produce the greatest difference between the initial great circle track and the rhumb line track, between two points which are separated by 30-degree change of longitude?
60S and 50S – Conversion Angle depends on sin(Mean Latitude). Mean Lats: A(0), B(0), C(55), D(40). Max is 55 deg (60S/50S).
Q5. The convergence angle between the two meridians is 30 degrees. If the mean latitude is 30N then find the D.long.
D Long = 60 degree – Convergency = dLong * sin(Lat). 30 = dLong * sin(30). 30 = dLong * 0.5. dLong = 60.
Q6. An aircraft passes position A (75 00N 120 00’W) on route to position B (75 00N 140 30W). What is the great circle track on departure from A?
280° – Calculated: 279.9° -> 280. Lat 75, dLong 20.5, Dir W.
Q7. An aircraft takeoff from A (30S 020 W) maintains the great circle track to B (30S 020E). Find the great circle track at B.
080° – Calculated: 80.0° -> 80. Lat -30, dLong 40, Dir E.
Q8. An aircraft takeoff from A (30N 120 W) maintains the great circle track to B (30N 050E). Find the great circle track at A.
048° – Calculated: 47.5° -> 48. Lat 30, dLong 170, Dir E.
Q9. An aircraft autopilot is coupled to the INS steering from A (60S 040W) to B (60S 030 W). what will the track when the aircraft reaches B.
086° – Calculated: 85.7° -> 86. Lat -60, dLong 10, Dir E.
Q10. An aircraft autopilot is coupled to the INS steering from A (40N 080W) to B (40N 120 E). find an initial great circle.
321° – Calculated: 321.4° -> 321. Lat 40, dLong 160, Dir W.