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A Structural Design Method for Bottom Zigzag Parachute

A structural design, zigzag technology, applied in the field of parachutes, which can solve the problems of poor anti-flutter performance

Active Publication Date: 2016-07-06
BEIJING RES INST OF SPATIAL MECHANICAL & ELECTRICAL TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a bottom zigzag parachute and its structural design method for the poor anti-flutter performance of existing parachutes under supersonic conditions

Method used

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  • A Structural Design Method for Bottom Zigzag Parachute
  • A Structural Design Method for Bottom Zigzag Parachute
  • A Structural Design Method for Bottom Zigzag Parachute

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Embodiment Construction

[0058] The bottom zigzag parachute and its structural design according to the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0059] Such as figure 1 As shown, the bottom edge zigzag parachute according to the present invention is made up of canopy 1 and parachute 2 two parts. The canopy 1 is divided into upper, middle and lower parts: the upper part is a disc 11 and the lower part is a belt 13, all of which are dense fabrics, and the middle part is a wide slit 12, which vertically separates the disc 11 and the belt 13.

[0060] The disc 11 is a flat circular dense fabric with a top hole on the top, and a circular structure with a hole in the middle in the planar unfolded state. The belt is an optimized rectangular fabric, which is a rectangular structure with zigzag long sides in the planar unfolded state. The bottom edge where the strap connects to the paracord is serrated to create a streamlined...

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Abstract

The invention provides a parachute with a zigzag bottom edge, which is applied to the supersonic low-density parachute opening environment. The parachute comprises a parachute canopy and parachute cords, wherein the upper part and the bottom of the parachute canopy are dense fabrics, and the parachute canopy is vertically partitioned from the middle by a wide seam. The parachute has the benefit that the upper part of the parachute canopy is of a plane circular structure, and the connecting part of the bottom edge of the parachute canopy and the parachute cords is zigzag, so that a natural streamlined structure is formed, therefore, the parachute canopy fabrics with redundant bottom edges are eliminated, the influence of supersonic flutter is effectively weakened. The parachute has the advantage of strong flutter resistance and is an excellent supersonic low-density parachute.

Description

technical field [0001] The invention belongs to the technical field of aerospace entry, deceleration and landing (EDL), and in particular relates to a parachute used in a supersonic low-density parachute opening environment. Background technique [0002] With the rapid development of deep space exploration technology, the EDL technology for planets with thin atmospheres (such as Mars) has become a research hotspot and difficulty. Among them, supersonic low-density parachute deceleration technology is a core technology. Up to now, the parachute parachute types suitable for supersonic low-density parachute opening include disc seam parachute, improved ring sail parachute, cross parachute and so on. Although the cross-shaped parachute has the largest unit resistance area, with the increase of parachute opening speed, the cross-shaped parachute will have greater vibration and poor stability; under the condition of supersonic speed and low dynamic pressure, the ring sail parachut...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B64D17/02B64D17/24
Inventor 梁艳李健
Owner BEIJING RES INST OF SPATIAL MECHANICAL & ELECTRICAL TECH