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US 6,895,742 B2Granted
Bifold door thrust reverser
AssigneeThe NORDAM Group, Inc.
InventorsJean-Pierre Lair, Frederick Henry Peters
Life of this patent
Estimating the term…
Abstract
A fan thrust reverser includes an outer louver door joined to an inner blocker door by a drive link in a bifold configuration. The louver door is stowed closed in the outer skin of a fan nacelle outside the blocker door stowed closed in the inner skin of the nacelle. An actuator deploys open the louver and blocker doors, with the louver door extending radially outwardly and the blocker door extending radially inwardly for reversing fan exhaust flow during thrust reverse operation.
Claims40
A thrust reverser comprising;
- a fan nacelle having radially outer and inner skins extending axially from a leading edge defining an inlet to a trailing edge defining an outlet;
- an outer door including forward and aft ends, and pivotally mounted to said nacelle in said outer skin;
- an inner door pivotally mounted to said nacelle in said inner skin in opposition with said outer door;
- a drive link pivotally joining together said outer and inner doors;
- an actuator joined to said doors for rotation thereof between a stowed position at which said doors are pivoted closed substantially flush in said inner and outer skins, and a deployed position at which said outer door is pivoted open and extends radially outwardly from said outer skin, and said inner door is pivoted open and extends radially inwardly from said inner skin;
- and
- said outer door aft end being axially arcuate and adjoining said inner door in said deployed position for reverse turning airflow from said inner door to said outer door.
4 more elements
A fan thrust reverser comprising:
- a fan nacelle having outer and inner skins extending between leading and trailing edges, and an annular compartment between said skins having a flow tunnel extending radially therebetween;
- a gang of outer louver doors pivotally joined to said nacelle in said compartment to close said tunnel along said outer skin;
- an inner blocker door pivotally joined to said nacelle in said compartment in opposition with said louver doors to close said tunnel along said inner skin;
- a unison link pivotally joining together said louver doors;
- a drive link pivotally joining together said louver doors with said blocker door;
- an actuator joined to said louver doors for simultaneously rotating said louver doors from a stowed position closing said tunnel at said outer skin to a deployed position inclined outwardly from said outer skin to open said tunnel;
- said drive link being configured for correspondingly pivoting said blocker door between a stowed position thereof closing said tunnel to a deployed position thereof opening said tunnel;
- and
- an aft one of said louver doors having an axially arcuate aft end adjoining said blocker door in said deployed position for reverse turning airflow from said blocker door to said louver doors.
6 more elements
Dependencies are inferred from the claim text.