Originally Posted by
SteinarN
Just a honest question.
What do you calculate the average vertical G to be in order to start at zero vertical speed at 6000 feet and then reach the ground in 18sec?
I don’t know as this would depend on where terminal velocity is reached and this is dependent on a set of variables.
Unless I’m recalling my rusty theory incorrect G-forces are accelerating forces and indicate a rate of change rather then velocity. Same as a VSI shows rate of change.
Standing in an elevator I feel acceleration and deceleration forces.
If the vehicle that I’m in reaches a constant speed and I’m at the same speed I won’t feel ( measure) anything.
If the speed of the vehicle changes and I’m firmly attached to this vehicle I will sense (measure) a change.
Starting at altitude I can have an average rate of descent which is based on altitude change/time but it can be continuously accelerating or deceleration after initial acceleration.
This is where Vg diagrams come in and the definitions of the various speeds such as Va.