阅读说明：本技术 低空小速度下救生伞加快充气方法 (Method for accelerating inflation of parachute at low altitude and low speed ) 是由 宋军辉 张鑫华 于 2019-10-29 设计创作，主要内容包括：本发明公开了一种低空小速度下救生伞加快充气方法,在救生伞上设置束腰绳和延时切割器,束腰绳限位的捆在伞衣外侧的腰部位置且能限制伞衣展开,延时切割器安装在伞衣外侧束腰绳附近且束腰绳穿过延时切割器的切割孔；救生伞在低空小速度下开伞时,受束腰绳限制,束腰绳下部的伞衣快速充气并使伞衣底边快速展开,加快空气流入,然后延时切割器达到设定时间切断束腰绳,束腰绳以上部分的伞衣开始展开充气,直到伞衣完全张满。该方法能够加快伞衣充气张满性能,满足救生伞低空小速度下充气性能的要求,工作安全可靠,安拆简便,使用范围广。(The invention discloses a method for accelerating inflation of a lifesaving parachute at low altitude and low speed, which is characterized in that a waist binding rope and a time delay cutter are arranged on the lifesaving parachute, the waist binding rope is limited and bound at the waist position outside a canopy and can limit the canopy to be unfolded, the time delay cutter is arranged near the waist binding rope outside the canopy, and the waist binding rope passes through a cutting hole of the time delay cutter; when the lifesaving parachute is opened at a low altitude and a low speed, the lifesaving parachute is limited by the girdling rope, the canopy at the lower part of the girdling rope is inflated rapidly, the bottom edge of the canopy is unfolded rapidly, air inflow is accelerated, then the girdling rope is cut off by the time delay cutter when the set time is reached, and the canopy above the girdling rope starts to be unfolded and inflated until the canopy is fully full. The method can accelerate the inflation and fullness performance of the canopy, meet the requirement of the inflation performance of the life-saving parachute at low altitude and low speed, and has safe and reliable work, simple and convenient installation and disassembly and wide application range.)

1. A method for accelerating inflation of a lifesaving parachute at low altitude and low speed is characterized by comprising the following steps: a waist binding rope and a time delay cutter are arranged on the life-saving parachute, the waist binding rope is limited and bound at the waist position outside the canopy and can limit the canopy from unfolding, the time delay cutter is arranged near the waist binding rope outside the canopy, and the waist binding rope penetrates through a cutting hole of the time delay cutter; when the lifesaving parachute is opened at a low altitude and a low speed, the lifesaving parachute is limited by the girdling rope, the canopy at the lower part of the girdling rope is inflated rapidly, the bottom edge of the canopy is unfolded rapidly, air inflow is accelerated, then the girdling rope is cut off by the time delay cutter when the set time is reached, and the canopy above the girdling rope starts to be unfolded and inflated until the canopy is fully full.

2. The method for accelerating the inflation of a parachute at a low altitude and a small speed as set forth in claim 1, wherein: the waist-binding rope is made of anti-burning nylon wire.

3. The method for accelerating the inflation of a parachute at a low altitude and a small speed as claimed in claim 1 or 2, wherein: the length of the girdling rope is 300 mm-1000 mm.

4. The method for accelerating the inflation of a parachute at a low altitude and a small speed as set forth in claim 1, wherein: the delay cutter adopts a gunpowder cutter.

5. The method for accelerating the inflation of a parachute at a low altitude and a small speed as claimed in claim 1 or 4, wherein: after the pulling rope of the delay cutter is pulled away, the delay time is 0.8 s-1.5 s.

6. The method for accelerating the inflation of a parachute at a low altitude and a small speed as set forth in claim 1, wherein: the waist-binding rope is limited by the waist-binding ring, the waist-binding ring is sewn at the waist position outside the canopy for one circle, and the waist-binding rope sequentially penetrates through the waist-binding ring.

7. The method for accelerating the inflation of a parachute at a low altitude and a small speed as set forth in claim 6, wherein: the waist ring adopts an anti-burning nylon silk belt.

8. The method for accelerating the inflation of a parachute at a low altitude and a small speed as set forth in claim 6, wherein: the waist-binding ring is sewn on the radial reinforcing belt and is positioned at two sides of the circumferential reinforcing belt.

9. The method for accelerating the inflation of a parachute at a low altitude and a small speed as set forth in claim 1, wherein: the time delay cutterbar passes through the stop collar and ties up the installation of rope, and both make up in the canopy outside stop collar and tying up the rope, and the time delay cutterbar passes the stop collar and both ends expose, ties up the rope and ties up on the time delay cutterbar.

10. The method for accelerating the inflation of a parachute at a low altitude and a small speed as set forth in claim 9, wherein: the stop collar and the binding rope are both sewed on the radial reinforcing belt.

Technical Field

The invention belongs to the field of airborne landing and airdrop, and particularly relates to a method for accelerating inflation of a parachute at low altitude and low speed.

Background

The lifesaving parachute is a parachute system for passengers to escape from the aircraft in an emergency, and mainly has the following working characteristics: 1) the requirement on the working reliability is high; 2) the using time is uncertain, and the parachute opening speed and the height change range are large; 3) the work in the use range must meet the requirements of human body physiological hygiene indexes.

The design key of the lifesaving parachute is that the parachute opening process is controlled, measures need to be taken to accelerate the inflation speed of the lifesaving parachute at low altitude and low speed, and the lifesaving capability of the lifesaving parachute under the condition of unfavorable posture is improved; measures are needed to delay the inflation speed of the lifesaving parachute at a high altitude and a high speed, so that the impact overload generated by parachute opening of the lifesaving parachute is reduced, and personnel are prevented from being seriously damaged.

At present, the measures for controlling parachute opening at high altitude and high speed are more, and the measures for controlling parachute opening at low altitude and low speed are lacked.

Disclosure of Invention

The invention aims to provide a method for accelerating inflation of a parachute at a low altitude and a low speed, which can accelerate the inflation and expansion performance of a canopy, meet the requirement of the inflation performance of the parachute at the low altitude and the low speed, and has safe and reliable operation, simple and convenient installation and disassembly and wide application range.

The technical scheme adopted by the invention is as follows:

a method for accelerating inflation of a lifesaving parachute at low altitude and low speed is characterized in that a waist binding rope and a time delay cutter are arranged on the lifesaving parachute, the waist binding rope is limited and tied at the waist position outside a canopy and can limit the canopy to be unfolded, the time delay cutter is arranged near the waist binding rope outside the canopy, and the waist binding rope penetrates through a cutting hole of the time delay cutter; when the lifesaving parachute is opened at a low altitude and a low speed, the lifesaving parachute is limited by the girdling rope, the canopy at the lower part of the girdling rope is inflated rapidly, the bottom edge of the canopy is unfolded rapidly, air inflow is accelerated, then the girdling rope is cut off by the time delay cutter when the set time is reached, and the canopy above the girdling rope starts to be unfolded and inflated until the canopy is fully full.

Furthermore, the waist-binding rope adopts an anti-burning nylon wire rope.

Furthermore, the length of the girdling rope is 300 mm-1000 mm.

Further, the delay cutter adopts a gunpowder cutter.

Furthermore, after the pulling rope of the delay cutter is pulled away, the delay time is 0.8 s-1.5 s.

Furthermore, the girdling rope is limited through a girdling ring, the girdling ring is sewn at the waist position outside the canopy for a circle, and the girdling rope sequentially penetrates through the girdling ring.

Furthermore, the waist-binding ring adopts an anti-burning silk ribbon.

Further, the girdling ring is sewed on the radial reinforcing belt and is positioned on two sides of the circumferential reinforcing belt.

Furthermore, the time delay cutter is installed through a limiting sleeve and a binding rope, the limiting sleeve and the binding rope are both sewn outside the canopy, the time delay cutter penetrates through the limiting sleeve, two ends of the time delay cutter are exposed, and the binding rope is bound on the time delay cutter.

Furthermore, the stop collar and the binding rope are both sewed on the radial reinforcing belt.

The invention has the beneficial effects that:

the method can accelerate the inflation and fullness performance of the canopy, meet the requirement of the inflation performance of the lifesaving parachute at low altitude and low speed, basically has no influence on the parachute opening procedure and performance index of the lifesaving parachute system, and is safe and reliable in work; the method has the advantages of simple structure, simple and convenient installation and disassembly operation, no need of maintenance, wide application range and better application prospect, and can adjust the length of the girdling rope and the specification of the time-delay cutter according to different umbrella coat structures.

Drawings

Fig. 1 is a schematic diagram of the present invention.

Fig. 2 is a partial schematic view of a canopy in an embodiment of the invention.

FIG. 3 is a schematic view of the installation of the partial canopy and the girdling line and the time delay cutter in the embodiment of the invention.

Fig. 4 is a schematic structural diagram of a delay cutter in an embodiment of the present invention.

In the figure: 1-a radial reinforcement band; 2-a limit sleeve and a binding rope; 3-girdling a waist ring; 4-a circumferential reinforcing band; 5-pulling the hair rope; 6-time delay cutter; 7-waist binding rope.

Detailed Description

The invention is further illustrated with reference to the following figures and examples.

As shown in fig. 1 to 3, a method for accelerating inflation of a parachute at a low altitude and a low speed, a waist-restraining rope 7 and a time-delay cutter 6 are arranged on the parachute, the waist-restraining rope 7 is tied at the waist position outside a canopy in a limiting manner and can limit the canopy from unfolding, the time-delay cutter 6 is arranged near the waist-restraining rope 6 outside the canopy, and the waist-restraining rope 6 penetrates through a cutting hole of the time-delay cutter 6; when the lifesaving parachute is opened at a low altitude and a low speed, the lifesaving parachute is limited by the girdling rope 7, the canopy at the lower part of the girdling rope 7 is inflated rapidly, the bottom edge of the canopy is unfolded rapidly, air inflow is accelerated, then the girdling rope 7 is cut off after the cutter 6 is delayed for a set time, and the canopy at the part above the girdling rope 7 begins to be unfolded and inflated until the canopy is fully opened. The method can accelerate the inflation and fullness performance of the canopy, meet the requirement of the inflation performance of the lifesaving parachute at low altitude and low speed, basically has no influence on the parachute opening procedure and performance index of the lifesaving parachute system, and is safe and reliable in work; the method has the advantages of simple structure, simple and convenient installation and disassembly operation, no need of maintenance, wide application range and better application prospect, and the length of the girdling rope 7 and the specification of the time-delay cutter 6 can be adjusted according to different umbrella coat structures.

As shown in fig. 2 and 3, in the present embodiment, the girdling rope 7 is limited by the girdling ring 3, the girdling ring 3 is sewn at the waist position outside the canopy for one circle, the girdling rope 7 sequentially passes through the girdling ring 3, the girdling ring 3 is made of anti-burning silk bands, and the girdling ring 3 is sewn on the radial reinforcing band 1 and is positioned at two sides of the circumferential reinforcing band 4; the time delay cutterbar 6 passes through the stop collar and ties up 2 installations of rope, and the stop collar is all made up in the canopy outside with tying up rope 2, and the time delay cutterbar 6 passes the stop collar and both ends expose, ties up the rope and ties up on time delay cutterbar 6, and the stop collar is all made up on radial strengthening band 1 with tying up rope 2.

As shown in fig. 4, in the present embodiment, the delay cutter 6 is a powder cutter, and the delay time is 0.8s to 1.5s after the pull cord 5 of the delay cutter 6 is pulled away.

In the present embodiment, the waist-restraining cord 7 is made of a cord or tape-like fabric, preferably an anti-burn nylon cord having a length of 300mm to 1000mm and a breaking strength of 2000N to 3000N.

It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.