F-35 Begins Year With Test Objectives Unmet 04 Jan 2011 Graham Warwick
http://www.aviationweek.com/aw/gener...p22-279507.xml
"...upper lift-fan door actuator redesigned, and no problems were experienced in the last quarter, he says. ...McFarlan says some hinge components have been redesigned & operation of the lift-fan door rescheduled to reduce airloads on the auxiliary doors during semi-jet-borne flight. The
lift-fan door was programmed to open to 65 deg. below 120 kt., and to 35 deg. above that airspeed. But
with the large door fully open, loads on the auxiliary-inlet doors behind it are reduced, so the schedule has been changed to keep the lift-fan door open 65 deg. up to 165 kt. during a short takeoff, he says...."