Abstract: A fan for creating lift or thrust having a fan hub and fan blades depending from the fan hub. The fan blades have slots formed therein with openings facing substantially aft, relative to a rotation direction of the fan blades, wherein air blowing from the fan hub into the fan blades and out of the openings of the slots contribute to the aerodynamic performance of the fan blades to enhance the aerodynamic performance of the fan blades.

Abstract: A gas turbine engine comprising a combustion chamber section, a turbine section, and a compressor section. The turbine section surrounds the combustion chamber and the compressor section surrounds the turbine section.

Abstract: A vehicle with a body, an engine, and an engine driven fan. The engine is connected to the body. The engine driven fan is mounted to the body for providing thrust capable of effecting controlled motion of the vehicle in at least one direction. The fan has a fan section drivingly connected to the engine. The fan section has fan blades. At least one of the fan blades has a tip jet and boundary layer control slot formed therein.