Viol exhaust nozzle with veer flap extension

A two-dimensional variable area exhaust nozzle assembly for a gas turbine engine having forward and vertical thrust capability including:

• convergent/divergent variable position exhaust nozzle means including exhaust duct means having opposed side walls, and movable upper and lower flap means disposed between said side walls, said exhaust duct means and upper and lower flap means defining a converging/diverging exhaust gas flow path, said upper flap means including a downstream flap having an exhaust gas expansion surface and a fore and an aft edge, said aft edge being movable from a first to a second forward thrust position in a circular arc about a fixed axis parallel to said aft edge;
• deflector hood means rotatable in a circular arc about said fixed axis between a plurality of stowed positions wherein it is above said upper flap means external to the gas flow path and a deployed position downstream of said upper flap means in said gas flow path to deflect exhaust gases in a downward direction, said hood means having rear edge parallel to said downstream flap aft edge;
• a veer flap having a front edge, a rear edge, and a gas directing surface, said veer flap being pivotally connected at its front edge to said hood means rear edge and, during forward thrust operation of said nozzle assembly, extending in a generally downstream direction;
• first actuation means operatively connected to said convergent/divergent nozzle means, to said hood means, and to said veer flap for positioning said convergent/divergent nozzle means, said hood means, and said veer flap, including control means for rotating said hood means to continuously maintain the position of said front edge of said veer flap adjacent said aft edge of said downstream flap during forward thrust operation of said nozzle assembly, wherein during forward thrust operation said gas directing surface of said veer flap acts as an extension of said downstream flap expansion surface.