Do we have any aerodynamic experts that can explain whether or not you can have the benefits of ground effect and translational lift at the same time?
So my understanding of ground effect is that it provides a more efficient rotor system by dissipating rotor tip vortices that would normally flow back into the rotor system, which in turn reduces induced drag.
Translational lift on the other hand, is when the aircraft reaches a speed where its outrunning its rotor tip vortices, preventing them from recirculating into the rotor, again reducing induced drag.
Once you hit effective translational lift, flying ahead of rotor tip vortices, how is ground effect still beneficial?
Two reasons I'm nuking these two concepts on a saturday evening...First, a couple of our ground school instructors mentioned that you can not have benefits from both phenomena at the same time.
The other reason I'm scratching my head on this one is how the maneuver description guide mentions a running takeoff. It basically says accelerate thru effective translational lift, fly off the deck while maintaining ground effect until reaching 50KIAS, then execute a shallow climb out.
Who's wrong here the MDG or the ground school instructors?
So my understanding of ground effect is that it provides a more efficient rotor system by dissipating rotor tip vortices that would normally flow back into the rotor system, which in turn reduces induced drag.
Translational lift on the other hand, is when the aircraft reaches a speed where its outrunning its rotor tip vortices, preventing them from recirculating into the rotor, again reducing induced drag.
Once you hit effective translational lift, flying ahead of rotor tip vortices, how is ground effect still beneficial?
Two reasons I'm nuking these two concepts on a saturday evening...First, a couple of our ground school instructors mentioned that you can not have benefits from both phenomena at the same time.
The other reason I'm scratching my head on this one is how the maneuver description guide mentions a running takeoff. It basically says accelerate thru effective translational lift, fly off the deck while maintaining ground effect until reaching 50KIAS, then execute a shallow climb out.
Who's wrong here the MDG or the ground school instructors?