Multi-stage landing buffer energy absorbing device

Abstract

The invention provides a multi-stage landing buffer energy absorbing device. The multi-stage landing buffer energy absorbing device comprises three stages of energy absorbing mechanisms. The first stage of energy absorbing mechanism comprises a first outer shell and an elastic energy absorbing unit arranged in an inner cavity of the first outer shell. The second stage of energy absorbing mechanismis an elastic daub buffer. The second stage of energy absorbing mechanism comprises a first end and a second end, wherein the first end and the second end are oppositely distributed, and the first end is limited in the first outer shell and abuts against the elastic energy absorbing unit. The third stage of energy absorbing mechanism comprises a second outer shell and a plastic energy absorbing unit arranged in an inner cavity of the second outer shell, and the second end is limited in the second outer shell and abuts against the plastic energy absorbing unit. Buffer energy absorption of a conventional working condition is provided through the first stage of energy absorbing mechanism, buffer energy absorption of an unconventional non-emergency working condition is provided through the second stage of energy absorbing mechanism, buffer energy absorption of an unconventional emergency working condition is provided through the third stage of energy absorbing mechanism, and therefore thetechnical problems that a landing buffer energy absorbing device hardly meets the requirements of carrier rockets, airplanes and other aircrafts for dealing with complex landing working conditions are effectively solved.

Description

technical field [0001] The invention belongs to the technical field of spacecraft soft landing auxiliary devices, and more specifically relates to a multi-stage landing buffer energy-absorbing device. Background technique [0002] At present, landing buffer energy-absorbing devices used in the aerospace field generally use a single elastic or plastic energy dissipation method to assist launch vehicles, aircrafts and other aircraft to achieve soft landings. Among them, elastic energy dissipation generally uses rubber, springs, etc. Recoverable elastic energy-absorbing unit, the load curve of the elastic energy-absorbing unit is usually a nonlinear parabola, it can rebound after the load is unloaded, and absorb energy by converting the impact energy into frictional heat energy consumption, but the absorbed energy is relatively small, Limited compression rate is generally suitable for low-level energy impact occasions; plastic energy consumption generally uses non-recoverable p...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a multi-stage landing buffer energy-absorbing device, including but not limited to solving the technical prob

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