Patent ID: 6264137
Filing Date: 2001-07-24
Classification: B64D,F02C,F05D

Abstract:
An air inlet assembly for bringing air to an auxiliary power unit mounted in the compartment of an aircraft comprising:a duct extending from an intake contoured to conform to the to the aircraft fuselage to an exit coupled to the inlet plenum of the auxiliary power unit;a first door hingeably mounted to the aft side of said intake and moveable from an open position to a closed position where said first door lies flush against said intake, said first door having a closing wall and two side walls; anda vortex bustor forward of said intake comprising a second door hingeably mounted to the forward end of said intake, said second door having a plate with two inwardly extending walls, each of said inwardly extending walls hinged to one of said side walls so that the second wall rotates with said first door.