Originally Posted by
Mast Bumper
The UH-60 series helicopter has in fact a very small vertical stabilizer surface and any sort of t/r drive failure calls for engine shutdown and auto. You can't sustain straight and level flight without t/r drive.
Among the current generation of bigger Transport Helicopters it still has about the largest vertical Tail especially if you include the smooth transition to rear part for the fuselage that should also produce some Weather van(/p
)ing or at least reduce obstruction of airflow to the Tail.
@John Dixson: Are there possibly known cases where it was possible to keep the S-70 at least somewhat controllable in a cruise at least for some time with a failed T/R drive? Personally I would consider that potentially possible? Am I too optimistic?
P.S.: Very interesting information about the clever backup solution for the Tail Rotor control
That is the good thing that can come from 'Battle proven'.