一种适用于宽机速范围的降落伞

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By incorporating closable vents and multi-stage elastic zones at the top of the parachute canopy, the problem of balancing impact load and inflation efficiency at high and low aircraft speeds is solved, achieving adaptive venting across a wide aircraft speed range and improving the safety and reliability of the parachute.

CN224511459UActive Publication Date: 2026-07-17HUAZHONG UNIV OF SCI & TECH

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Patent Information

Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner: HUAZHONG UNIV OF SCI & TECH
Filing Date: 2025-09-16
Publication Date: 2026-07-17

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Abstract

本实用新型提出了一种适用于宽机速范围的降落伞，包括伞衣和伞绳，伞衣上设有若干加强筋；伞衣的顶部设有可开闭的第一排气孔，伞衣顶部从中间往外侧依次设有第一弹性区和第二弹性区，第一弹性区的弹性模量低于第二弹性区的弹性模量，第一弹性区和第二弹性区内开设有连续的切口，切口受气流冲击张开形成第一排气孔。本实用新型通过在伞衣顶部设置可开闭的第一排气孔，并基于不同弹性模量区域与连续切口的配合，实现了排气孔在气流作用下的自适应开闭。在高机速下开伞时排气孔能有效张开排气以降低冲击载荷，在低机速下开伞时排气孔能保持闭合或减小张开口径以保障充气效率，从而兼顾高机速下的冲击载荷减缓与低机速下的快速充气展开需求。

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Claims

1. A parachute suitable for a wide range of speeds, comprising a canopy (1) and a harness, said canopy (1) being provided with a plurality of reinforcing ribs; characterized in that, The top of the umbrella canopy (1) is provided with an openable and closable first exhaust hole. The top of the umbrella canopy (1) is provided with a first elastic zone (2) and a second elastic zone (3) from the middle to the outside. The elastic modulus of the first elastic zone (2) is lower than that of the second elastic zone (3). Continuous cuts (5) are provided in the first elastic zone (2) and the second elastic zone (3). The cuts (5) are opened by the airflow to form the first exhaust hole.

2. A parachute suitable for use over a wide speed range as claimed in claim 1 wherein, The canopy (1) is provided with a plurality of second exhaust holes with the same structure as the first exhaust hole. The plurality of second exhaust holes are distributed at equal intervals in an annular area around the first exhaust hole. The ratio of the radius of the annular area to the radius of the canopy (1) is 0.25 to 0.

5.

3. A parachute suitable for use over a wide speed range as claimed in claim 2, characterised in that, The reinforcing ribs include a plurality of first reinforcing ribs (6) arranged along the circumference of the umbrella canopy (1) and a plurality of second reinforcing ribs (7) perpendicular to the first reinforcing ribs (6), and the second vent hole is located at the intersection of the first reinforcing ribs (6) and the second reinforcing ribs (7).

4. A parachute suitable for use over a wide range of speeds as claimed in claim 1 or 2 wherein, The outer periphery of the second elastic region (3) is also provided with an annular third elastic region (4), the elastic modulus of the third elastic region (4) is higher than that of the second elastic region (3), and the cut (5) extends into the third elastic region (4).

5. A parachute suitable for use over a wide speed range as claimed in claim 1 wherein, The umbrella canopy (1) has a fixed vent hole (8) at the center of its top.