Vectoring transition duct for turbine engine

A transition duct (112) is provided at the outlet of a turbine engine (10). The transition duct transitions the outlet of the tip turbine engine from round to rectangular. The transition duct also provides a plurality of variable vanes (120) at the outlet of the transition duct. The transition duct incorporates a perimeter slot providing cooling to the duct outer wall and attached components. The variable vanes are installed to vector the exhaust gases. This allows the aircraft to decelerate, hover or accelerate in the forward direction by commanding the position of the variable vanes. One potential application of the tip turbine engine is for vertical installations in aircraft.