'lele' yeah I gather that friction of a skid for Eg is one of the same thing (an obstruction to ground sideways movement) I understand this as I play with toy Heli's & they do the same thing, crash! One way for me to overcome this possible sideways or ever rearward movement of a toy heli it to 'jump' into the air quickly then reduce pwr, could this not be done in a real chopper? Just asking as I am interested in these complex machines:-)
'lele' I'm also trying to get my head around yr comment re Long-ranger with a CoG behind the mast would make the machine move fwd upon applying lift.
I would have thought that any lift (made by the big propeller above the machine) in the above CoG situation would make the chopepr tilt rearwards, pivot around the CoG, maybe I have the bull by the tail here & am happy to be corrected
Wmk2