In aerial navigation, what does 'DR' stand for?

'DR' in aerial navigation stands for Dead Reckoning. This is a method used by pilots to determine their current position by calculating their course and speed over a period of time. Dead reckoning involves starting from a known position and using various factors such as wind speed and direction to predict the aircraft’s current location at any given moment.

This technique is especially important in navigation where no other reference points (like landmarks or radar) are visible. Pilots rely on accurate estimates of time, speed, and distance traveled, which can be crucial for ensuring that they remain on course during flight.

Understanding dead reckoning is fundamental for pilots, as it lays the groundwork for more advanced navigation techniques, including those using GPS or other electronic navigation aids, without which navigation by reference can be significantly hindered.