Load-reducing slow-release device for aircraft containment release launching

Abstract

The invention relates to a load-reducing slow-release device for aircraft containment release launching, which comprises a pull rod, a split piston ring, a slow-release device shell, a damping oil cavity shell, damping oil and a damping hole, an aircraft is positioned on a launching pad, a load-reducing slow-release device is arranged below the launching pad, and the pull rod penetrates through athrough hole in the launching pad to be fixedly connected with the aircraft; the split type piston ring is of a two-section structure, is arranged at the lower end of the pull rod, is arranged in an inner cavity of the slow release device shell, and is tightly attached to the inner cavity of the slow release device shell; damping oil is contained in the damping oil cavity shell, and the slow release device shell is arranged in the damping oil of the damping oil cavity shell. Before launching, the aircraft structure and the launching pad structure are connected and locked through the restraining and releasing device, the restraining and releasing device receives an instruction to release the restraining force during launching, the aircraft is released, meanwhile, the load-reducing and slow-releasing device starts to work, and slow-releasing resistance is provided to prevent the aircraft from being subjected to overlarge impact force.

Description

technical field [0001] The invention relates to a load-reducing and slow-release device for pinned-release launch of an aircraft, and belongs to the technical field of vertical launch of aerospace vehicles. Background technique [0002] The pinch-release launcher is used to secure the vehicle to the launch pad before vertical launch and for a few seconds after ignition. After the ignition works normally and the engine thrust reaches the rated value for takeoff, the pinning release device releases the aircraft, and the aircraft takes off normally without the pinning force. This launch method of igniting the engine and then releasing the aircraft after the engine builds up thrust can stop the launch when the aircraft is abnormal after ignition, which improves the reliability of vertical launch, but increases the additional release load shock when the aircraft suddenly breaks away from the restraining force and releases. In order to reduce the impact on the aircraft, the impac...

AI Technical Summary

Problems solved by technology

These three load reduction and slow-release schemes all rely on structural plastic deformation and friction to slow the impact. The common disadvantage is that it is impossible to achieve accurate slow-release force control in the design stage.

The technical research accumulation of domestic load shedding and slow release schemes is relatively weak, and there are no actual engineering application cases

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