Originally Posted by
tartare
Was watching video of the B-Model hovering at Farnborough.
When it translates to forward flight it seems to keep the front fan door open for a long time.
That must create huge drag - does anyone know what speed it closes at - is it computer controlled or commanded by the pilot? (I suspect the later rather than the former).
The screwjacks or struts that it uses must be incredibly strong given the airload...
Is it not the case that since most of the air mass in that area is drawn down into the lift fan, it never hits the door so cannot cause drag.