Which of the following vectors is refered to as the Ground Speed?
The green one I expect is TAS, the blue one would be Vertical Rate
Note that for simplicity I did not draw them as geodetic curves, but the black one should be shorter than the gray one because of the earth's curvature.
Does the Ground Speed represent the horizontal speed relative to surface at the sea level?
Ex: Helicopter climbing verticaly will have GS=0?
Does the Earth's curvature affect the GS? As the length of the gray vector will be longer the higher the altitude is. Does that mean a plane flying at 1km will have higher GS than a plane flying the same total speed at 10km?
I'm simulating aircraft movement along a straight trajectory by constant speed. To simplify, the input is start coordinates & altitude and finish coords & alt.
That means the plane can ascend or descent during simulation. I know the total distance between A & B and distance at sea level. So first thing I tought of was:
GS = distanceAtSL / (totalDistance / speed)
In relation to image:
I know the length of Green line and I can calculate how long it will take the plane to reach the end. The time to finish is constant for each line & I know the length of the black line so using formula
speed = distance / time I should be able to get the "Ground Speed".
Correct me if I'm wrong.