fitness88 Posted June 1, 2017 Posted June 1, 2017 When using the kneeboard there are several maps showing your aircraft position. Is there a way to determine the mileage between the latitude lines and the longitude lines on these various maps? Thank you.
Sgt_Baker Posted June 1, 2017 Posted June 1, 2017 (edited) Degrees of latitude are always 60nm. Degrees on longitude are ~60nm at the equator and 0nm at the poles and can be calculated using the following formula: DegreeOfLonLength = Cos(Latitude) * 60 nm DegreeOfLonLength = Cos(Latitude) * 69.0468 miles DegreeOfLonLength = Cos(Latitude) * 111.12 km ...for nautical miles, miles and kilometres respectively. --Baker When using the kneeboard there are several maps showing your aircraft position. Is there a way to determine the mileage between the latitude lines and the longitude lines on these various maps? Thank you. Edited June 1, 2017 by Sgt_Baker UltraMFCD 3.0 in the works. https://ultramfcd.com
Sgt_Baker Posted June 1, 2017 Posted June 1, 2017 (edited) Here's a handy table: Lat nm mi km +/- 0 60.00 69.05 111.12 1 59.99 69.04 111.10 2 59.96 69.00 111.05 3 59.92 68.95 110.97 4 59.85 68.88 110.85 5 59.77 68.78 110.70 6 59.67 68.67 110.51 7 59.55 68.53 110.29 8 59.42 68.37 110.04 9 59.26 68.20 109.75 10 59.09 68.00 109.43 11 58.90 67.78 109.08 12 58.69 67.54 108.69 13 58.46 67.28 108.27 14 58.22 67.00 107.82 15 57.96 66.69 107.33 16 57.68 66.37 106.82 17 57.38 66.03 106.26 18 57.06 65.67 105.68 19 56.73 65.29 105.07 20 56.38 64.88 104.42 21 56.01 64.46 103.74 22 55.63 64.02 103.03 23 55.23 63.56 102.29 24 54.81 63.08 101.51 25 54.38 62.58 100.71 26 53.93 62.06 99.87 27 53.46 61.52 99.01 28 52.98 60.96 98.11 29 52.48 60.39 97.19 30 51.96 59.80 96.23 31 51.43 59.18 95.25 32 50.88 58.56 94.24 33 50.32 57.91 93.19 34 49.74 57.24 92.12 35 49.15 56.56 91.02 36 48.54 55.86 89.90 37 47.92 55.14 88.74 38 47.28 54.41 87.56 39 46.63 53.66 86.36 40 45.96 52.89 85.12 41 45.28 52.11 83.86 42 44.59 51.31 82.58 43 43.88 50.50 81.27 44 43.16 49.67 79.93 45 42.43 48.82 78.57 46 41.68 47.96 77.19 47 40.92 47.09 75.78 48 40.15 46.20 74.35 49 39.36 45.30 72.90 50 38.57 44.38 71.43 51 37.76 43.45 69.93 52 36.94 42.51 68.41 53 36.11 41.55 66.87 54 35.27 40.58 65.31 55 34.41 39.60 63.74 56 33.55 38.61 62.14 57 32.68 37.61 60.52 58 31.80 36.59 58.88 59 30.90 35.56 57.23 60 30.00 34.52 55.56 61 29.09 33.47 53.87 62 28.17 32.42 52.17 63 27.24 31.35 50.45 64 26.30 30.27 48.71 65 25.36 29.18 46.96 66 24.40 28.08 45.20 67 23.44 26.98 43.42 68 22.48 25.87 41.63 69 21.50 24.74 39.82 70 20.52 23.62 38.01 71 19.53 22.48 36.18 72 18.54 21.34 34.34 73 17.54 20.19 32.49 74 16.54 19.03 30.63 75 15.53 17.87 28.76 76 14.52 16.70 26.88 77 13.50 15.53 25.00 78 12.47 14.36 23.10 79 11.45 13.17 21.20 80 10.42 11.99 19.30 81 9.39 10.80 17.38 82 8.35 9.61 15.46 83 7.31 8.41 13.54 84 6.27 7.22 11.62 85 5.23 6.02 9.68 86 4.19 4.82 7.75 87 3.14 3.61 5.82 88 2.09 2.41 3.88 89 1.05 1.21 1.94 90 .00 .00 .00 Edited June 1, 2017 by Sgt_Baker UltraMFCD 3.0 in the works. https://ultramfcd.com
fitness88 Posted June 2, 2017 Author Posted June 2, 2017 Here's a handy table: Lat nm mi km +/- 0 60.00 69.05 111.12 1 59.99 69.04 111.10 2 59.96 69.00 111.05 3 59.92 68.95 110.97 4 59.85 68.88 110.85 5 59.77 68.78 110.70 6 59.67 68.67 110.51 7 59.55 68.53 110.29 8 59.42 68.37 110.04 9 59.26 68.20 109.75 10 59.09 68.00 109.43 11 58.90 67.78 109.08 12 58.69 67.54 108.69 13 58.46 67.28 108.27 14 58.22 67.00 107.82 15 57.96 66.69 107.33 16 57.68 66.37 106.82 17 57.38 66.03 106.26 18 57.06 65.67 105.68 19 56.73 65.29 105.07 20 56.38 64.88 104.42 21 56.01 64.46 103.74 22 55.63 64.02 103.03 23 55.23 63.56 102.29 24 54.81 63.08 101.51 25 54.38 62.58 100.71 26 53.93 62.06 99.87 27 53.46 61.52 99.01 28 52.98 60.96 98.11 29 52.48 60.39 97.19 30 51.96 59.80 96.23 31 51.43 59.18 95.25 32 50.88 58.56 94.24 33 50.32 57.91 93.19 34 49.74 57.24 92.12 35 49.15 56.56 91.02 36 48.54 55.86 89.90 37 47.92 55.14 88.74 38 47.28 54.41 87.56 39 46.63 53.66 86.36 40 45.96 52.89 85.12 41 45.28 52.11 83.86 42 44.59 51.31 82.58 43 43.88 50.50 81.27 44 43.16 49.67 79.93 45 42.43 48.82 78.57 46 41.68 47.96 77.19 47 40.92 47.09 75.78 48 40.15 46.20 74.35 49 39.36 45.30 72.90 50 38.57 44.38 71.43 51 37.76 43.45 69.93 52 36.94 42.51 68.41 53 36.11 41.55 66.87 54 35.27 40.58 65.31 55 34.41 39.60 63.74 56 33.55 38.61 62.14 57 32.68 37.61 60.52 58 31.80 36.59 58.88 59 30.90 35.56 57.23 60 30.00 34.52 55.56 61 29.09 33.47 53.87 62 28.17 32.42 52.17 63 27.24 31.35 50.45 64 26.30 30.27 48.71 65 25.36 29.18 46.96 66 24.40 28.08 45.20 67 23.44 26.98 43.42 68 22.48 25.87 41.63 69 21.50 24.74 39.82 70 20.52 23.62 38.01 71 19.53 22.48 36.18 72 18.54 21.34 34.34 73 17.54 20.19 32.49 74 16.54 19.03 30.63 75 15.53 17.87 28.76 76 14.52 16.70 26.88 77 13.50 15.53 25.00 78 12.47 14.36 23.10 79 11.45 13.17 21.20 80 10.42 11.99 19.30 81 9.39 10.80 17.38 82 8.35 9.61 15.46 83 7.31 8.41 13.54 84 6.27 7.22 11.62 85 5.23 6.02 9.68 86 4.19 4.82 7.75 87 3.14 3.61 5.82 88 2.09 2.41 3.88 89 1.05 1.21 1.94 90 .00 .00 .00 At 44North each long. line = 49.67nm east/west correct? What does the Code # mean?
fitness88 Posted June 2, 2017 Author Posted June 2, 2017 Degrees of latitude are always 60nm. Degrees on longitude are ~60nm at the equator and 0nm at the poles and can be calculated using the following formula: DegreeOfLonLength = Cos(Latitude) * 60 nm DegreeOfLonLength = Cos(Latitude) * 69.0468 miles DegreeOfLonLength = Cos(Latitude) * 111.12 km ...for nautical miles, miles and kilometres respectively. --Baker What does Cos mean?
Sgt_Baker Posted June 2, 2017 Posted June 2, 2017 (edited) At 44North each long. line = 49.67nm east/west correct? Yep, that's right. What does the Code # mean? If you mean the +/- it should probably say N/S. What does Cos mean? The trigonometric cosine function. So enter your latitude in decimal degrees, press cos and then multiply by 60 (for nautical miles, which is the easiest to remember for precisely this reason). Edited June 2, 2017 by Sgt_Baker UltraMFCD 3.0 in the works. https://ultramfcd.com
fitness88 Posted June 3, 2017 Author Posted June 3, 2017 Yep, that's right. If you mean the +/- it should probably say N/S. The trigonometric cosine function. So enter your latitude in decimal degrees, press cos and then multiply by 60 (for nautical miles, which is the easiest to remember for precisely this reason). If each long. line = 49.67nm in the area we fly of the Black Sea then I can just work with that number to get a quick idea of how far point 'A' to 'B' is? As for figuring latitude distances north/south I'll use as a rough 75% of 49.67nm...49.67 will be rounded to 50nm. This should work for my purposes provided each kneeboard map provided in a mission regardless of scale will represent the same distance between long. & lat. lines.
Sgt_Baker Posted June 3, 2017 Posted June 3, 2017 The distance of a degree North/South is always 60nm regardless of where you are on the planet. If each long. line = 49.67nm in the area we fly of the Black Sea then I can just work with that number to get a quick idea of how far point 'A' to 'B' is? As for figuring latitude distances north/south I'll use as a rough 75% of 49.67nm...49.67 will be rounded to 50nm. This should work for my purposes provided each kneeboard map provided in a mission regardless of scale will represent the same distance between long. & lat. lines. UltraMFCD 3.0 in the works. https://ultramfcd.com
fitness88 Posted June 4, 2017 Author Posted June 4, 2017 The distance of a degree North/South is always 60nm regardless of where you are on the planet. Thanks, I wrote the opposite of what I meant...lat. lines are constant but long. lines get closer the more north and south you go.
Recommended Posts