Calculation of Year, Day and Time Sidereal Year Sidereal year the duration taken for one revolution of the earth around the sun with distant star at infinity as datum reference Time taken for one sidereal year is equal to 365 days and 6 hours Tropical Year Tropical year is duration taken for one revolution of the earth around the sun with sun as the datum reference Duration of tropical year is 365 days, 5 hours, 48 minutes and 45 seconds Calendar Year Calendar year is made to keep whole number…
Category: General Navigation
Basics of Air Navigation is called General navigation. In thsi section, you can learn General Navigation required for DGCA Examinations.
Earth and Solar System
Solar System Kepler’s First Law of Planetary Motion Kepler propounded three laws regarding planetary motion Kepler’s first law states that the orbit of each planet is an ellipse with the Sun at one of the foci Kepler’s second law states that the line joining the planet to the Sun sweeps equal areas in equal time Kepler’s third law states that the square of the sidereal period of a planet is proportional to the cube of its mean distance from the Sun Orbit of Planets around the Sun All planets revolve…
Lamberts and Mercator Plotting
Lamberts vs Mercator Plotting Plotting Radio Bearings on Lambert Charts Radio bearings can be plotted on Lambert Charts by following these steps Step 1 – Convert Relative bearings to Magnetic Bearings Formula for Magnetic bearings = Relative bearing + Magnetic heading If the value of magnetic bearing is greater than 360 Subtract 360 from the result Step 2 – Convert Magnetic bearings to the station (QDM) to Magnetic Bearings from the station (QDR) Step 3 – Convert Magnetic Bearing (QDR) to True Bearings (QTE) Get True Bearings by Applying Station…