One stick inertial propulsion with a spring.

This is based on my old concepts, but I have added a spring which is attaching the head of the core from one side to the upper surface where it can give away its energy on an external rim. This is half inertial energy solution, and one must speed up this fast if the force is to be measurable. I also have added untypical ball bearings which is based on my own idea. Animation is not perfect, but it is like it is. This is a single generator and for more useful application one should apply two or more such a generator. System seems to have a lot of vibration, but in the case of application more than one such a rotor this system should work more liquidly.  The difference between top side and bottom side in arm length is not big, if it will be bigger there is a need to apply other bearing in central part of the device. This system is projected for very fast rotation, what would in assumption compensate a smal difference in mass on upper side and lower side of the device. The spring is making possible attaching all time the one-side of the rotor to the internal surface of the external rim. The ball bearing on the end of the rotor always is attached to the surface thanks the spring and it is rotate very fast because it is small in comparison to for instance external rim diameter. So, the application of maximally as it is only possible big ball bearing seems to be reasonable due to this ball is exposed on hit from the friction, which in this case could be extremally strong and additionaly one must know that just by it bearing the inertial energy is also transmited on external rim, so this can be a weak point of entire system. The system will be rotate on ball bearings on the main shaft with application of an electric motor. This system is based on assumption of the proper dislocation of the mass during rotation of the rotor, if more mass and weight is on upper side of the device the system will be generate more centrifugal force in the top direction. If the mass is almost entirely hidden on the bottom side inside the bearing of my idea the centrifugal force is weaker in this direction and is transfered to the upper side of the device, by pushing the head of the rotor toward the center of the device by external rim. For sure this system will have a lot of jolts although the mass of both heads of the rotor are the same, additionally there is a weight of the spring which also will destabilize the balance of the device but rather mass of the spring in upper position will be additionally make stronger the centrifugal force, but also its presence on the bottom is not good for the operation of the system. For practical use it could be thin as it is only possible only to sustain operation of the device, there is no need applicate thick spring due to friction and troubles with overcome its resistance by energy from the DC moto. So, it should be only for returning the head of the rotor on the proper position, the rest will be done by the centrifugal force. 

This is front view.

This is front view and X-ray.

This is upside view.

This is a side view.

I should say again that system is not balanced right now, what you see is a single generator view, so for practical use one should add another one ot two generator to balance the system. In the case of three generator, they will be located on a circle plane by an angle of 120 degrees from each other. I haven't made any calculation yet due I must first make some technical drawings on AutoCAD for establishing real dimensions and scale of entire device. If I manage to do that, I will be albe obtain proper parameters for calculations. For now, I work out only 3D model in low quality and animation in Blender and this is only schematic approach to the topic.

The rotor will be mounted on external ball bearings and the system will have a frame housing, so it will be not like is shown here on the picture, if I have more time, I will propose the external frame solution which will have holes for shaft and the bearings on each side. System is equipped with only one weight on one generator. This rotor will be rotate inside this housing and nothing will be visible besides it thus the system will not be like other system with propellers, where the air is pumped be rotating blades toward the ground to lift off. My systems will be different the energy will be coming from electric motor not internal combustion engine, so the system will be zero emission and won't be needing any material medium outside to lift off the ground. The system will enter space after it escape from the atmosphere without any sign of propulsion. This system like many others inertial propulsion kinds will work under vacuum condition and under absence of gravitation, magnetic field, electromagnetic field and will no need to refueling, the only problem is energy source, but it can be solved by many solutions like application of RTG or nuclear reactor.