Patent ID: 8602349
Filing Date: 2013-12-10
Classification: B64C,G05D

Abstract:
1. A system for automatically stabilizing by remote control an airborne, tethered surveillance platform comprising: I. a vertical takeoff unmanned aerial vehicle including at least one electric motor for driving two counter-rotating propellers, thereby generating an upward lift, II. a surveillance platform comprising: III. a host vehicle including a power supply that transmits electrical energy to said at least one electric motor over the conductive tethers; IV. a symmetrical rotating platform mounted atop said host vehicle, the platform bearing an index mark allowing the measurement of its angle with respect to the lubber line of said host vehicle, said symmetrical rotating platform providing the means for storing the unmanned aerial vehicle and for controlling the altitude and attitude thereof comprising: V. an electronic control and display unit installed in the host vehicle comprising: whereby the system for automatically stabilizing by remote control an airborne, tethered surveillance platform provides the means for controlling the altitude to which the surveillance platform will ascend, and adjusting the lengths of the two other tethers by means of two positional servo-loops, until achieving minimum error signals from two level sensors positioned at an angle on said symmetrical platform, thereby stabilizing said surveillance platform in a horizontal plane.