These are very strange terminologies. As far as aeronautics is concerned, we care about these things:. Ground distance, which could be expressed in Nautical mile, would be an integral of the ground speed.
Maybe you can call that unit Nautical ground mile. The integral of airspeed, however, is more or less meaningless. At best, it states how much distance a parcel of air has traveled relative to the aircraft. But since winds change over the trajectory, it wouldn't even be the same parcel of air. The unit of that distance could be what you called Nautical air mile. Although, I have never heard the term Nautical Air Mile, it does make sense.
Based on your attached link, an NAM would be the distance from a particular parcel of air. Airspeed would be the speed at which the aircraft is moving through, towards or away from particular parcels of air relative to those parcels. Airspeed is also the speed at which parcels of air are moving towards or away from a particular relative point or object.
Ground distance can be measured directly. So can time. Therefore, groundspeed can be calculated. Groundspeed and airspeed can also be measured through its affect on our instruments relative to the instruments themselves.
Measuring NAMs directly seems impractical if not improbable. The most direct way that comes to mind is the movement of radiosonde balloons. Otherwise, NAM can only be calculated from other metrics. I find it difficult to think of any useful application of nautical air miles in practical use. Also of note, in aviation, nautical miles is generally in reference to the distance between two point over which we are flying.
But, sense a nautical miles is defined as 1 minute of arc distance of latitude, it makes sense that it would be slightly greater in the air than on the surface of the Earth. Sign up to join this community. The best answers are voted up and rise to the top.
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Asked 1 year, 4 months ago. Active 1 year, 4 months ago. Viewed 3k times. Improve this question. Darshan Patil. Darshan Patil Darshan Patil 2 2 silver badges 10 10 bronze badges. I hate to see a question about elementary physical concepts turned into a question about the definitions of certain phrases, which are arbitary. In a typical ground school course you won't be taught anything about a thing called an "air mile" or a thing called a "ground mile".
These sets of initials aren't necessarily widely used in aviation, though I'm sure they have their niches. Therefore, Dallas is air miles from Austin. Convert air speed to land speed. The formula is one knot equals approximately 1. As an example, an airplane might fly at knots. Therefore, the airplane's speed in land miles is miles per hour.
Convert land speed to air speed. The formula is one mile per equals approximately 0. A sports car might be driving at miles per hour. Therefore, the sports car's speed in flying miles is knots. Sam N. One land mile is equal to approximately 0. Convert land miles to air miles directly by multiplying the number of land miles by 0.
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