CONTAINER FOR FLIGHT-DATA RECORDER Russian patent published in 2001 - IPC

FIELD: flying vehicle equipment. SUBSTANCE: container has detachable shell with multiplayer envelope inside it forming cavity for flight-data recorder which is provided with its own protective envelope. Multilayer envelope consists of several layers made from materials possessing different physical properties forming evacuated cavities and cavities filled with liquid and particles of agent having high boiling point. On surface of multiplayer envelope framework is assembled from fins and rings which ensure displacement of center of mass in case of impact together with layers of multiplayer envelope, thus reducing impact load of flight-data recorder. Fins and rings reduce also depth of submergence of container at impact against ground. Porous body may be arranged in between fins and rings whose pores are filled with agent having high boiling point. EFFECT: enhanced resistance to temperature not below 1200 C. 16 cl, 4 dwg