REFLECTOR OF UNFOLDED ANTENNA, ITS TRANSFORMED FRAME, UNFOLDING MECHANISM AND LOCKING MEMBER Russian patent published in 1997 - IPC

FIELD: antenna devices, in particular, high-precision bend large-size antennas for communication satellites and space ships with radio telescopes. SUBSTANCE: device has frame with rotating beams, which are connected by means of locking members. In addition device has reflecting surface and reflector unfolding mechanism. Ring force cantilever is located at end of bed. Side wall of cantilever has radial slits. Outer surface of said wall has mounting units of rotating beams. Each beam has V-shaped strut which has rods which are rigidly connected to each other at obtuse angle. Free end of one rod is hinged on rotating beam. Free end of another rod carries fixed member. Vertex of strut is hinged on additional rod, which another end is hinged on bed. Unfolding mechanism has pulleys which are connected to rotating beams, triangle levers each of which is hinged on periphery of driving wheel. Pulleys run through slits in cantilever and are connected to driving wheel by means of levers. Locking member has rest, ball-shaped support and spring-loaded fixer, which is designed as sickle wedge which inner side engages back side of support. Rest of locking member is designed as hollow cone frustum which axis is located in plane which is perpendicular to beam rotation axis. EFFECT: possibility to design antenna which diameter is in range of 10-14 m and deviation of reflecting surface from required shape is in range of 2 mm on side petals and 0!6-0!9 in central mirror. 14 cl, 16 dwg