Turbofan gas turbine engine with variable fan outlet guide vanes

A turbofan gas turbine engine comprising:

• a forward fan section including at least one row of circumferentially spaced apart longitudinally forward fan rotor blades;
• a core engine located aft and downstream of the forward fan section and comprising in downstream serial flow relationship an aft core driven fan, a compressor, a core combustor, and a high pressure turbine drivingly connected to the core driven fan and the core compressor by a core engine shaft;
• a low pressure turbine located aft and downstream of the core engine and drivingly connected to the forward fan rotor blades by a low pressure shaft;
• a fan bypass duct downstream of the forward fan section and disposed radially outwardly of the core engine;
• the forward fan section located axially forward and upstream of a radially outer inlet of the fan bypass duct;
• an exhaust duct downstream of and in fluid communication with the fan bypass duct and the low pressure turbine;
• the fan bypass duct including radially outer and inner inlets from the forward fan section to the fan bypass duct;
• an inner inlet duct extending from the inner inlet to the fan bypass duct and having a supercharger disposed in the inlet duct;
• and
• the forward fan section having only a single stage of fan guide vanes and the fan guide vanes being variable fan outlet guide vanes located downstream of and adjacent to the forward fan rotor blades and axially between the forward fan rotor blades and the fan bypass duct for adjusting the flow into the fan duct.