CN110723301A - Method for accelerating inflation of parachute at low altitude and low speed - Google Patents
Method for accelerating inflation of parachute at low altitude and low speed Download PDFInfo
- Publication number
- CN110723301A CN110723301A CN201911037614.6A CN201911037614A CN110723301A CN 110723301 A CN110723301 A CN 110723301A CN 201911037614 A CN201911037614 A CN 201911037614A CN 110723301 A CN110723301 A CN 110723301A
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- Prior art keywords
- rope
- parachute
- canopy
- waist
- inflation
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- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000009434 installation Methods 0.000 claims abstract description 7
- 230000003014 reinforcing effect Effects 0.000 claims description 9
- 239000004677 Nylon Substances 0.000 claims description 4
- 229920001778 nylon Polymers 0.000 claims description 4
- 239000003721 gunpowder Substances 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D17/00—Parachutes
- B64D17/62—Deployment
- B64D17/72—Deployment by explosive or inflatable means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D17/00—Parachutes
- B64D17/62—Deployment
- B64D17/74—Sequential deployment of a plurality of canopies
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- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Emergency Lowering Means (AREA)
Abstract
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.
Description
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.
Claims (10)
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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911037614.6A CN110723301A (en) | 2019-10-29 | 2019-10-29 | Method for accelerating inflation of parachute at low altitude and low speed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911037614.6A CN110723301A (en) | 2019-10-29 | 2019-10-29 | Method for accelerating inflation of parachute at low altitude and low speed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110723301A true CN110723301A (en) | 2020-01-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911037614.6A Pending CN110723301A (en) | 2019-10-29 | 2019-10-29 | Method for accelerating inflation of parachute at low altitude and low speed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110723301A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3615156A (en) * | 1969-06-06 | 1971-10-26 | Space Ordnance Systems Inc | Reefing line cutter |
| US3908938A (en) * | 1972-04-21 | 1975-09-30 | Etudes Et Fab Aeronautiques | Parachute |
| CN107813941A (en) * | 2017-10-27 | 2018-03-20 | 航宇救生装备有限公司 | Reduce Parachute Opening impact and the method for reducing parachute level simultaneously |
| CN110341966A (en) * | 2019-08-20 | 2019-10-18 | 纪衍雨 | A kind of multi-functional full-automatic parachute |
-
2019
- 2019-10-29 CN CN201911037614.6A patent/CN110723301A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3615156A (en) * | 1969-06-06 | 1971-10-26 | Space Ordnance Systems Inc | Reefing line cutter |
| US3908938A (en) * | 1972-04-21 | 1975-09-30 | Etudes Et Fab Aeronautiques | Parachute |
| CN107813941A (en) * | 2017-10-27 | 2018-03-20 | 航宇救生装备有限公司 | Reduce Parachute Opening impact and the method for reducing parachute level simultaneously |
| CN110341966A (en) * | 2019-08-20 | 2019-10-18 | 纪衍雨 | A kind of multi-functional full-automatic parachute |
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Application publication date: 20200124 |