station and delivered to the airship via the tether the horizontal axis wind turbine 5 is mounted in the narrowest section of the inner surface of the envelope 14 thereby increasing the speed of the wind passing over the blades of the wind turbine and thus maximizing the efficiency of the wind turbine the wind turbine 5 is connected to a gearbox and electrical generator 12 thereby converting the available mechanical energy of the wind into electrical energy to power the airship and its payload the electrical generator 12 may be synchronous or asynchronous ac 1 phase or 3 phase dc or any suitable electrical generator as desired by the designer however a dc generator is preferred since most electronics especially hydrogen electrolysis units operate off of direct current using a direct current electric generator would thereby eliminate the need for an inverter hence reducing the size weight and cost of the present invention fig5 depicts the one of the possible support structures that could be used to constrain the wind turbine and the electric generator within the airship one possible support structure is the use of three lightweight ropes 16 manufactured of a lightweight fiber or other suitable material when the assembly is fully inflated the inners surface 14 of the airship envelop would pull the ropes 16 taut thereby suspending the turbine in the throat of the airship however there are many other possible support structures not depicted such as the use of a housing and supporting rods that are fastened to the internal stiffening structure or any.