Vayudoot Aviation

1. How many feet are equivalent to 9, 5 km?

31,160 ft

57,760 ft

50,160 ft

2. An aircraft flies a great circle track from 56°N070°W to 62°N110°E. The total distance traveled is?

2040nm

5420nm

3720nm

3.
An A/C takes off from (48°5' N 001° W) and flies on track of 270° for 2 hrs 10 min and then alters its track to 360° and later it alters its track to 090°, after flying for 1 hr 32 min, it crosses the meridian by 1° W. If G/S of the A/C was 420 Kts throughout the flight, what was the flying time on second leg.

- [2.10 × 420 = D LONG' × 48° 5' 1. 1.32 × 420 = D LONG' × COS Θ 2. (2.10 × 420) / (1.32 × 420) = (DLONG × 60 × COS 48°5') / (DLONG × 60 × COS Θ). COS Θ = (COS 48°5' × 1.32) / 2.10. Θ = 61°46'. DIFFERENCE BETWEEN LATITUDES = 13° 41'. DISTANCE = 13°41' × 60 = 821 NM. TIME = 821/ 420 = 1 HR 59 MIN.]

- [2.10 × 420 = D LONG' × 48° 5' 1. 1.32 × 420 = D LONG' × COS Θ 2. (2.10 × 420) / (1.32 × 420) = (DLONG × 60 × COS 48°5') / (DLONG × 60 × COS Θ). COS Θ = (COS 48°5' × 1.32) / 2.10. Θ = 61°46'. DIFFERENCE BETWEEN LATITUDES = 13° 41'. DISTANCE = 13°41' × 60 = 821 NM. TIME = 821/ 420 = 1 HR 57 MIN.]

4. Position A 60°N020°W, Position B 60°NO21°W and Position C 59°N020°W. What are, respectively, the distances from A to B and from A to C?

52nm and 60nm

60nm and 52nm

30nm and 60nm

5. Position A 00°N100°E Position B is 240°(T), 200NM from A. What is the position of B?

01°40'S097°07'E

01°40'N097°07'E

01°40'N101°40'E

6. An aircraft departing A(N40° 00' E080° 00') flies a constant true track of 270° at a ground speed of 120 kts. What are the coordinates of the position reached in 6 HR?

N40° 00' E064° 20'.

N40° 00' E068° 10'.

N40° 00' E060° 00'.

7. When dealing with heights and altitudes in international aviation, we use the following units

meter and feet.

feet, kilometer and decimals of nautical mile.

feet and yard.

8. Great Circle Distant - fill in the blanks: A Latitude Great Circle Distances - 10°21'S, Longitude Great Circle Distances - 113° 47'W, B Latitude Great Circle Distances - 05°17'N, Longitude Great Circle Distances - 113°47'W, D Lat - ________ , Distance (nm) - _________

- [D LAT - 15°38', DISTANCE (NM) - 938.]

- [D LAT - 15°38', DISTANCE (NM) - 928.]

9.
An A/C takes off from 10° N 175°E it flies in southerly direction for 600 nm. Thereafter in easterly direction for 600 nm. Thereafter in southerly direction for 600 nm. Find lat - long of destination.

- [FIRST POINT : 000° N 175°E, SECOND POINT:000°N 175°W, DESTINATION: 10°S 175°S.]

- [FIRST POINT : 000° N 175°E, SECOND POINT:000°N 175°W, DESTINATION: 10°S 175°W.]

10.
An A/C takes off from A (30°S 060°E) and flies in northerly direction for 600 nm, thereafter in easterly direction for 600 nm. Thereafter southerly direction for 600 nm, thereafter westerly direction for 600 nm. Find final position of A/C in nm. East or of starting position.

- [DEPARTURE A = 600 NM, 600 = D LONG' × COS (20°). D LONG - 10° 38'. NEW POSITION A = 070° 38'. DEPARTURE B = ?. = D LONG' × COS (30°) = 10°38' × 60 × COS 30° = 553 NM. THEREFORE THE A/C TRAVELS WEST FOR 600 NM, IT WILL REACH 49NM TO THE WEST STARTING POINT.]

- [DEPARTURE A = 600 NM, 600 = D LONG' × COS (20°). D LONG - 10° 38'. NEW POSITION A = 070° 38'. DEPARTURE B = ?. = D LONG' × COS (30°) = 10°38' × 60 × COS 30° = 553 NM. THEREFORE THE A/C TRAVELS WEST FOR 600 NM, IT WILL REACH 47NM TO THE WEST STARTING POINT.]

11. Consider the following statements

the any position on the surface of the earth, the length of 1 of arc east/west is equal to the length 1 minute of urc north/south in the same position on a perfect sphere.

both statements are correct.

the exact length 1 minute of are varies a little from position to position because the earth radius vary.

12. Rhumb Line Distance - fill in the blanks: A Latitude Rhumb Line (departure) Distance - 21°00'N, Longitude Rhumb Line (departure) Distance - 010°43'E, B Latitude Rhumb Line (departure) Distance - 21°00'N, Longitude Rhumb Line (departure) Distance - 016°17'E, D Long - ________ , Distance (nm) - _________

- [D LONG - 334', DISTANCE (NM) - 311.8.]

- [D LONG - 334', DISTANCE (NM) - 313.8.]

13. How many feet are there in 1 sm?

6080 ft

3280 ft

5280 ft

14. An aircraft departs from position A (04°10'S178°22'W) and flies northward following the meridian for 2950NM. It then flies westward along the parallel of latitude for 382NM to position B. The coordinates of position are?

45°00'N172°38'E

53°20'N172°38'E

45°00'N168°22'W

15.
Two A/C A and B take off from X (53°N 004°E') for point Y (60°N 016°W). A/C A tiles due north till 60° latitude and then due west to Y. A/C B flies due west till 016°W than to Y. Which A/C travels shorter and by how many nautical miles.

- [DEPARTURE A = D LONG' × COS LAT = 20 × 60 × COS 60° = 600 NM. DEPARTURE B = D LONG' × COS LAT = 20 × 60 × COS 53° = 722 NM. A TRAVELS LESS BY 122 NM.]

- [DEPARTURE A = D LONG' × COS LAT = 20 × 60 × COS 60° = 600 NM. DEPARTURE B = D LONG' × COS LAT = 20 × 60 × COS 53° = 722 NM. A TRAVELS LESS BY 126 NM.]

16. A flight is to be made from "A" 49°S180°E/@ to "b" 58°S180°E/W. the distance in kilometers from "A" to "B" is approximately

1000

804

1222

17. An aircraft at latitude 02°20'N tracks 180°(T) for 8=685km. on completion of the flight the latitude will be

04°10'S

04°30'S

03°50'S

18.
An A/C takes off from (45° 40' N 176° 36°E) and flies on true track of 090°for 1480 kms. Find lat - long of destination.

- [DEPARTURE = D LONG × 60 × COS LAT. 1480 KMS = (1480 ÷ 1.85) NMS = 800 NMS. D LONG = [800/60XCOS(45°40') ]=19° 04'. LONG = 176°36'+19°04' = 360° - 195°40' = 164°20'S.]

- [DEPARTURE = D LONG × 60 × COS LAT. 1480 KMS = (1480 ÷ 1.85) NMS = 800 NMS. D LONG = [800/60XCOS(45°40') ]=19° 04'. LONG = 176°36'+19°04' = 360° - 195°40' = 164°20'W.]

19. An aircraft at latitude 10°S flies north at a GS of 890km/h. what will its latitude be after 1.5h?

12°15'N

22°00'N

02°00'N

20.
Departure = 250 nm, D long = 4°50', find latitude.

- [DEPARTURE = D LONG' × COS LAT. 250 = 4°50' × 60 × COS Θ. COS Θ = 250/60 × 4°50'. COST LAT = 0.86 = 30°47' N/S.]

- [DEPARTURE = D LONG' × COS LAT. 250 = 4°50' × 60 × COS Θ. COS Θ = 250/60 × 4°50'. COST LAT = 0.86 = 30°41' N/S.]

21. Great Circle Distant - fill in the blanks: A Latitude Great Circle Distances - 37°27'S, Longitude Great Circle Distances - 049° 21'E, B Latitude Great Circle Distances - 43°21'S, Longitude Great Circle Distances - 049°21'E, D Lat - ________ , Distance (nm) - _________ .

- [D LAT - 5°54', DISTANCE (NM) - 354.]

- [D LAT - 5°54', DISTANCE (NM) - 352.]

22. An aircraft at latitude 10°North flies south at a groundspeed of 445km/h. what will be its latitude after 3h?

12°15'S

03°50'S

02°00'S

23. Rhumb Line Distance - fill in the blanks: A Latitude Rhumb Line (departure) Distance - 52°00'N, Longitude Rhumb Line (departure) Distance - 21°31'W, B Latitude Rhumb Line (departure) Distance - 52°00'N, Longitude Rhumb Line (departure) Distance - 010°17'E, D Long - ________ , Distance (nm) - _________

- [D LONG - 1908' DISTANCE (NM) - 1174.7.]

- [D LONG - 1908' DISTANCE (NM) - 1134.7.]

24. In international aviation the following units are used for horizontal distance

meters, kilometers and nautical miles.

meters, statute miles and nautical miles.

kilometers, statute miles and nautical miles.

25. The "departure" between positions 60°N160°E and 60°N "X" is 900nm. what is the longitude of "X"?

170°W

175°E

145°E

26. Kilometer is defined as

the mean length of a 1/40000 part of the equator.

0,454 nautical mile.

1 1/10000 part of the meridian length from equator to the pole.

27. The circumference of the parallel of latitude at 60°N is approximately

34641nm

18706nm

10800nm

28.
An A/C takes off from X (32° 48'S 178° 10'W) and flies on true westerly track for 450 nm. Find lat long of Y.

- [D'LONG = DEP/60XCOS(LAT) = 450/60XCOS(32°48') = 450 ÷ 0.8405 = 535'. = 8°55' = 360° - (178°10'W + 008°55'W) = 172° 55'E. LAT - LONG = (32°48'S 172°55'E).]

- [D'LONG = DEP/60XCOS(LAT) = 450/60XCOS(32°48') = 450 ÷ 0.8405 = 535'. = 8°55' = 360° - (178°10'W + 008°55'W) = 172° 55'E. LAT - LONG = (32°48'S 172°55'S).]

29. If an aeroplane was to circle around the Earth following parallel 60°N at a ground speed of 480kt. In order to circle around the Earth along the equator in the same amount of time, it should fly at a ground speed of:

240kt

960kt

550kt

30. Great Circle Distant - fill in the blanks: A Latitude Great Circle Distances - 53°25'N, Longitude Great Circle Distances - 108°00'E, B Latitude Great Circle Distances - 47°17'N, Longitude Great Circle Distances - 108°00'E, D Lat - ________ , Distance (nm) - _________ .

- [D LAT - 6°08', DISTANCE (NM) - 368.]

- [D LAT - 6°08', DISTANCE (NM) - 348.]

31. What is the longitude of a position 6NM to the east of 58°42'N094°00'W?

093°53.1'W

093°48.5'W

094°12.0'W

32. Rhumb Line Distance - fill in the blanks: A Latitude Rhumb Line (departure) Distance - 49°00'S, Longitude Rhumb Line (departure) Distance - 012°25'E, B Latitude Rhumb Line (departure) Distance - 49°00'S, Longitude Rhumb Line (departure) Distance - 025°45'E, D Long - ________ , Distance (nm) - _________

- [D LONG - 800', DISTANCE (NM) - 523.8.]

- [D LONG - 800', DISTANCE (NM) - 524.8.]

33.
An A/C takes off from (50°S 004°E) and flies on track of 090°for 2 hrs and then alters its track to 180° and later it alters its track to 270° after flying for 1 hr 27 min, it crosses the meridian by 4°E. If G/S of the A/C was constant at 380 Kts throughout the flight, what was the flying time of the aircraft on second leg?

- [2 × 380 = D LONG' × 50° 1. 1.45 × 380 = D LONG' × COS Θ 2. (2 × 380) / (1.45 × 380) = (DLONG × 60 × COS 50°) / (DLONG × 60 × COSΘ). COS Θ = COS50° × 1.45 / 2. Θ = 62°13'. DIFFERENCE BETWEEN LATITUDES = 12°13'. DISTANCE = 733 NM. TIME = 733/380 = 1 HR 59 MIN.]

- [2 × 380 = D LONG' × 50° 1. 1.45 × 380 = D LONG' × COS Θ 2. (2 × 380) / (1.45 × 380) = (DLONG × 60 × COS 50°) / (DLONG × 60 × COSΘ). COS Θ = COS50° × 1.45 / 2. Θ = 62°13'. DIFFERENCE BETWEEN LATITUDES = 12°13'. DISTANCE = 733 NM. TIME = 733/380 = 1 HR 57 MIN.]

34. An aircraft at position 60°N005°W tracks 090°(T) for 315km. on completion of the flight the longitude will be

000°15'E

002°10'W

000°40'E

35. Position A 45°N, ?°E, Position B 45°N, 45°15'E, Distance A-B=280NM. B is to the East of A , Required : longitude of position A?

38°39'E

49°57'E

51°51'E

36. Units used for, measuring vertical distances (altitude, elevation and height) are meters and feet. In India, feet is used. For horizontal distances units used are NMs. KMs & meters. In India NMs are used above 2NMs and meters for short distances.

Poles

Equator

45° Latitude

37. Position A is located on the equator at longitude 130°00'E. Position B is located 100NM from A on a bearing of 225°(T). The coordinates of position B are

01°11'N 131°11'E

01°11'S 131°11'E

01°11'S 128°49'E

38. Great Circle Distant - fill in the blanks: A Latitude Great Circle Distances - 49°00'S, Longitude Great Circle Distances - 012° 25'E, B Latitude Great Circle Distances - 45°00's, Longitude Great Circle Distances - 012°25'E, D Lat - ________ , Distance (nm) - _________ .

- [D LAT - 4°00', DISTANCE (NM) - 242.]

- [D LAT - 4°00', DISTANCE (NM) - 240.]

39. Rhumb Line Distance - fill in the blanks: A Latitude Rhumb Line (departure) Distance - 13°00'S, Longitude Rhumb Line (departure) Distance - 175°17'E, B Latitude Rhumb Line (departure) Distance - 13°00'S, Longitude Rhumb Line (departure) Distance - 168°31'W, D Long - ________ , Distance (nm) - _________

- [D LONG - 972', DISTANCE (NM) - 949.]

- [D LONG - 972', DISTANCE (NM) - 947.]

40. Great Circle Distant - fill in the blanks: A Latitude Great Circle Distances - 78°47'N, Longitude Great Circle Distances - 035°45'W, B Latitude Great Circle Distances - 84°35'N, Longitude Great Circle Distances - 144°15'E, D Lat - ________ , Distance (nm) - _________ .

- [D LAT - 16°38', DISTANCE (NM) - 938.]

- [D LAT - 16°38', DISTANCE (NM) - 998.]

41.
A/C flying from place X (27°27'N 030° 24' E) to Y(27° 27' N 108° 47' E). Find rhumb line Distance.

- [D'LONG = 108° 47'E - 030° 24'E = 78° 23'. DEP = (78°×60' + 23')× COS 27°27' = 4703×COS 27°27' = 4173 NM.]

- [D'LONG = 108° 47'E - 030° 24'E = 78° 23'. DEP = (78°×60' + 23')× COS 27°27' = 4703×COS 27°27' = 4163 NM.]

42. What is the time required to travel along the parallel of latitude 60°N between meridians 010°E and 030°W at a groundspeed of 480Kt?

02:30

01:15

01:45

43. In order to fly from position A (10°00'N030°00'W) to position B (30°00'N050°00'W), maintaining a constant true course, it is necessary to fly

a rhumb line track

a straight line plotted on a lambert chart

the great-circle route

44.
An a/c takes off from place X (45°20'N 010° 05'E) and flies in R/L direction of 270° for 800 nm. Find lat - long of destination.

- [DEPARTURE = D LONG' × COS LAT, 800 NM = D LONG' × COS (45°20'N), D LONG = 800 ÷ 0.7029 = 1138' = 18°58'. LONG Y = 18° 58' - 10°05' = 008° 53' W. LAT LONG = 45° 20'N 08° 53' S.]

- [DEPARTURE = D LONG' × COS LAT, 800 NM = D LONG' × COS (45°20'N), D LONG = 800 ÷ 0.7029 = 1138' = 18°58'. LONG Y = 18° 58' - 10°05' = 008° 53' W. LAT LONG = 45° 20'N 08° 53' W.]

45.
An A/C takes off from X (39° 42' N 105° 20'E) for Y(39° 42'N 178' 35' E). Find R/L Distance.

- [D'LONG = 178°35'E - 105° 20'E = 73° 15'. DEPARTURE = D LONG × 60 × COS LAT = 73°15' × COS (39°42'), 4395 × COS 39°42' = 4,381.5 NM.]

- [D'LONG = 178°35'E - 105° 20'E = 73° 15'. DEPARTURE = D LONG × 60 × COS LAT = 73°15' × COS (39°42'), 4395 × COS 39°42' = 3,381.5 NM.]

46. A nautical mile is defined as

1855 meters.

the average length of a 1' arc of longitude and a 1' arc of latitude.

the average length of a 1 minute arc of a meridian.

47. Rhumb Line Distance - fill in the blanks: A Latitude Rhumb Line (departure) Distance - 47°30'N, Longitude Rhumb Line (departure) Distance - 025°00'W, B Latitude Rhumb Line (departure) Distance - 47°30'N, Longitude Rhumb Line (departure) Distance - 044°28'W, D Long - ________ , Distance (nm) - _________ .

- [D LONG - 11.08' , DISTANCE (NM) - 738.1.]

- [D LONG - 11.08' , DISTANCE (NM) - 788.1.]

48. How many feet are there in a nm?

1000 ft

3280 ft

6080 ft

49. I nautical mile equals

6976 feet.

0,869 statute mile.

1855 meters.

50.
An A/C takes off from A (27° 13'N 024° 37'E) to B (27°13'N 094° 37' W). Find departure.

- [D'LONG = 094° 37'W+024°37 E = 119° 14'. DEPARTURE = D LONG IN MINS × COS LAT = 119° 14'×60 ×COS 27°13'. = 6361.93. = 6362 NM.]

- [D'LONG = 094° 37'W+024°37 E = 119° 14'. DEPARTURE = D LONG IN MINS × COS LAT = 119° 14'×60 ×COS 27°13'. = 6361.93. = 6342 NM.]

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