On the stress-strain state of film structures in space at electrodynamic deployment

We discuss a possibility of using the Ampere force for deployment and stabilization of film structures in space. It is supposed that a conductor connected with a power supply is deposited on the surface of a thin film, or solar batteries are used as conductors with current. The stress and strain of the thin film, caused by the electric current flow over a circular conductor confining this film, are found. The method of calculating the radial component of the stress tensor in a film, connected with concentric circular conductors with current, is obtained. The distribution of stresses for a film with three conductors is calculated. A possibility of minimizing the magnetic moment of a system of currents is discussed.     

Disturbance of the Electric Field in the Ionosphere by Sea Storms and Typhoons

The results of detecting quasi-stationary electric fields onboard the Kosmos-1809 satellite and observing sea storms and typhoons are analyzed jointly. We have detected an amplification of the electric field in the low-latitude ionosphere that is related to the preparatory stage and development of tropical storms and typhoons. In this case, the electric field strength can reach 20 mV/m, an anomalously high value for the low-latitude and near-equatorial ionosphere. High-accuracy estimates of the electric field strength are made on the basis of a model of its origination as a result of the generation of an extraneous electric current in the disturbed region of the lower atmosphere and the impact of these currents on the global atmosphere–ionosphere system of currents.