The goal of the report is to demonstrate some technological ways to create active force that don't require reactive mass flow. The active force is applied to many aerodynamics systems and it is result of the pressure difference from the medium to the system. By analogy, the space-time itself can be considered as some medium of interaction. Introduction There are known mechanical systems of gyroscope precession, gyroscopes of alternating radius and gyroscopes of nonlinear vibrations. For other systems the velocity of rotation of the mass is changing for different parts of the trajectory that produce some inner gradient of pressure in the system from the rotor to the stator.
Some mechanical systems use special vortex.
In some electromechanical systems electrically charged rotor is used to create propulsion force. Quite old idea is to use diamagnetic vapor that is accelerating in the permanent magnet field. High electric potential systems are known by Tesla and T.T.Brown research work. The asymmetry lead to centrifugal force gradient and non-zero linear component of this force. There are some research program on superconductivity gravitation connection.