CN109436339A - A kind of parachute reducing parachute-opening shock - Google Patents
A kind of parachute reducing parachute-opening shock Download PDFInfo
- Publication number
- CN109436339A CN109436339A CN201811368753.2A CN201811368753A CN109436339A CN 109436339 A CN109436339 A CN 109436339A CN 201811368753 A CN201811368753 A CN 201811368753A CN 109436339 A CN109436339 A CN 109436339A
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- Prior art keywords
- parachute
- longitudinal slit
- reducing
- opening
- opening shock
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 230000035939 shock Effects 0.000 title claims abstract description 19
- 230000003014 reinforcing effect Effects 0.000 claims description 8
- 238000000034 method Methods 0.000 abstract description 7
- 230000008569 process Effects 0.000 abstract description 2
- 230000006835 compression Effects 0.000 description 11
- 238000007906 compression Methods 0.000 description 11
- 101700004678 SLIT3 Proteins 0.000 description 8
- 102100027339 Slit homolog 3 protein Human genes 0.000 description 8
- 230000009471 action Effects 0.000 description 6
- 230000005855 radiation Effects 0.000 description 6
- 238000010276 construction Methods 0.000 description 5
- 238000005336 cracking Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000009467 reduction Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
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
- B64D17/02—Canopy arrangement or construction
- B64D17/18—Vent arrangement or construction
- B64D17/20—Vent arrangement or construction variable in area
Landscapes
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Emergency Lowering Means (AREA)
Abstract
The present invention relates to a kind of parachutes for reducing parachute-opening shock, it is characterised in that it includes bell, bell top center has been uniformly distributed circumferentially a plurality of longitudinal slit, every longitudinal slit is divided into multistage crack, and short limit band is equipped on Along ent.Structure is simple, easy to process, low in cost, securely and reliably, realizes off-load and deceleration, and do not reduce the other index requests of parachute.
Description
Technical field
The present invention relates to technical field of aerospace, and in particular to a kind of parachute for reducing parachute-opening shock.
Background technique
The scientific and technical application in aviation field of rapid development, so that the opening speed of parachute and air-drop weight are continuous
Increase, causes the parachute-opening shock of parachute that can also increase accordingly.Solution is first is that select the small umbellate form of parachute-opening shock, but simultaneously
The problem that landing speed can be brought exceeded because of the reduction of resistance coefficient, to make Parachute area increase, volume weight increases；
For solution second is that making parachute using the higher material of intensity, the problem of this method is brought, is product cost substantially
Increase, while also resulting in the increase of parachute volume weight, in addition, the development of material science is more slow, it is difficult to meet drop
Fall requirement of the umbrella to high-strength material.Therefore how under the premise of not influencing parachute other performance to reduce parachute-opening shock, be
Important project in parachute research.
Summary of the invention
The technical problem to be solved by the present invention is in view of the foregoing defects the prior art has, provide a kind of reduce and open
The parachute of umbrella impact, structure is simple, easy to process, low in cost, securely and reliably, realizes off-load and deceleration, and do not reduce
Fall the other index requests of umbrella.
Used technical solution is the present invention to solve above-mentioned technical problem:
A kind of parachute reducing parachute-opening shock, which is characterized in that including bell, bell top center
It is uniformly distributed circumferentially a plurality of longitudinal slit, every longitudinal slit is divided into multistage crack, is all provided on each Along ent
There is short limit band；To control the area that cracks.The present invention by the top of canopy at dangerouse cross-section increase slit method, make to drop
Umbrella is fallen in big speed parachute-opening, it is long to be sewn under the action of big ram compression in large area open configuration, it is ventilative to increase parachute construction
Amount plays the role of reducing parachute-opening load；And when the landing of system uniform descent, it is in equilibrium state, system ram compression is small at this time, long
It is sewn under the action of small ram compression close to closed state, system landing speed will not be significantly reduced with ratio when not cracking.This method is set
It is simple to count structure, is not significantly reducing system landing speed and is not increasing the bulking value of parachute, it is not necessary to is higher using intensity
Material, do not influence not only to have met system off-load and deceleration demand in the case where the other performance of parachute, but also do not reduce landing
The other index requests of umbrella,.
According to above-mentioned technical proposal, the both ends of longitudinal slit are connected with radiation reinforcing strip；Radiation reinforcing strip is set to landing
On umbrella canopy.
According to above-mentioned technical proposal, longitudinal slit is set within the scope of the dangerouse cross-section at the top of bell.
According to above-mentioned technical proposal, longitudinal slit periphery is equipped with bound edge, and slit is torn when preventing big speed parachute-opening.
According to above-mentioned technical proposal, bound edge material is bright and beautiful silk ribbon.
According to above-mentioned technical proposal, the number of longitudinal slit is 4 or 8.
The invention has the following advantages:
By opening up longitudinal slit at dangerouse cross-section at the top of canopy, make parachute in big speed parachute-opening, longitudinal slit
It is in large area open configuration under the action of big ram compression, increases parachute construction Air permenbility, plays the work for reducing parachute-opening load
With；And when the landing of system uniform descent, it is in equilibrium state, system ram compression is small at this time, and length approaches under the action of being sewn on small ram compression
Closed state, system landing speed will not be significantly reduced with ratio when not cracking, and the configuration of the present invention is simple is low in cost, both meets
System off-load, deceleration demand, and do not reduce the other index requests of parachute, it can be applied to the parachute system of various load-carryings,
A variety of different umbellate forms are also applied for, universality is stronger.
Detailed description of the invention
Fig. 1 is the structural schematic diagram for reducing the parachute of parachute-opening shock in the embodiment of the present invention；
Fig. 2 is the A of Fig. 1 to schematic diagram；
Fig. 3 is the B partial schematic diagram of Fig. 2；
In figure, 1- bell, 2- radiates reinforcing strip, the longitudinal direction 3- slit, 4- wrapped belt, the short limit band of 5-, 6- danger
Section range.
Specific embodiment
The present invention is described in detail with reference to the accompanying drawings and examples.
Shown in referring to Fig.1~Fig. 3, the parachute of the reduction parachute-opening shock in one embodiment provided by the invention, including
Bell, bell top center have been uniformly distributed circumferentially a plurality of longitudinal slit, every equal equal part of longitudinal slit
At multistage crack, short limit band is equipped on Along ent；To control the area that cracks.
Further, short limit band is arranged between adjacent crack.
Further, the both ends of longitudinal slit are connected with radiation reinforcing strip；Radiation reinforcing strip is set on bell.
Further, longitudinal slit is set within the scope of the dangerouse cross-section at the top of bell.
Further, longitudinal slit periphery is equipped with bound edge, and slit is torn when preventing big speed parachute-opening.
Further, bound edge material is bright and beautiful silk ribbon.
Further, the number of longitudinal slit is 4 or 8.
The working principle of the invention:
Along canopy diametrical direction symmetrically arranged four or eight longitudinal slits 3 in this programme, it is arranged in bell 1
Top within the scope of dangerouse cross-section, is located in parachute radiation reinforcing strip 2, and longitudinal slit 3 is circumferential to be sewed with made of bright and beautiful wire material
Wrapped belt 4, slit is torn when preventing big speed parachute-opening；Every longitudinal slit 3 is all divided into several equal portions as needed, in Along ent
On be equipped with short limit band 5, cracked area with control.In big speed parachute-opening, longitudinal slit 3 is under the action of big ram compression
Large area open configuration increases parachute construction Air permenbility, plays the role of reducing parachute-opening load；And system uniform descent lands
When, it is in equilibrium state, system ram compression is small at this time, and longitudinal slit 3 close to closed state under the action of small ram compression, land by system
Speed will not be significantly reduced with ratio when not cracking.
Longitudinal slit 3 is to guarantee parachute symmetrically arranged four or eight along canopy diametrical direction in this programme
Uniform force maintains system stability.
Longitudinal setting of slit 3 is because of dangerouse cross-section within the scope of 1 top of bell, dangerouse cross-section in this programme
It is the maximum region of parachute stress, cracks increase parachute construction Air permenbility within this range, can most effectively reduces parachute-opening
Impact.
Longitudinal setting of slit 3 is because intensity is larger herein, it is sufficient to hold in parachute radiation reinforcing strip 2 in this programme
By the active force of parachute-opening shock symmetry slot.
Every longitudinal slit 3 is all divided into several equal portions as needed in this programme, and short limit band 5 is equipped on Along ent,
It is cracked area with controlling maximum, the area that avoids cracking is excessive, influences the aeroperformance of parachute.
In conclusion the present invention provides a kind of parachute for reducing parachute-opening shock, by the top of canopy at dangerouse cross-section
The method for increasing longitudinal slit is sewn under different ram compressions effects by longitudinal length, and the area that cracks can accordingly change, to adjust
The characteristic of whole parachute construction Air permenbility；So that parachute is increased the area that cracks in big speed parachute-opening, reduce parachute-opening shock,
When uniform descent lands, ram compression hour, the area that cracks does not significantly reduce system landing speed, no close to close to closed state
Influence the other index requests of parachute.
Above is only presently preferred embodiments of the present invention, and of course, the scope of rights of the present invention cannot be limited by this,
Therefore according to equivalence changes made by scope of the present invention patent, still belong to protection scope of the present invention.
Claims (6)
1. a kind of parachute for reducing parachute-opening shock, which is characterized in that including bell, bell top center edge
It is circumferentially evenly distributed with a plurality of longitudinal slit, every longitudinal slit is divided into multistage crack, short limit is equipped on Along ent
Band.
2. the parachute according to claim 1 for reducing parachute-opening shock, which is characterized in that the both ends of longitudinal slit are connected with
Radiate reinforcing strip.
3. the parachute according to claim 1 for reducing parachute-opening shock, which is characterized in that longitudinal slit is set to parachute
Within the scope of dangerouse cross-section at the top of canopy.
4. the parachute according to claim 1 for reducing parachute-opening shock, which is characterized in that longitudinal slit periphery is equipped with packet
Side.
5. the parachute according to claim 4 for reducing parachute-opening shock, which is characterized in that bound edge material is bright and beautiful silk ribbon.
6. the parachute according to claim 1 for reducing parachute-opening shock, which is characterized in that the number of longitudinal slit is 4
Or 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811368753.2A CN109436339B (en) | 2018-11-16 | 2018-11-16 | Parachute capable of reducing parachute opening impact |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811368753.2A CN109436339B (en) | 2018-11-16 | 2018-11-16 | Parachute capable of reducing parachute opening impact |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109436339A true CN109436339A (en) | 2019-03-08 |
| CN109436339B CN109436339B (en) | 2022-07-15 |
Family
ID=65553731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811368753.2A Active CN109436339B (en) | 2018-11-16 | 2018-11-16 | Parachute capable of reducing parachute opening impact |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109436339B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE8201052L (en) * | 1982-02-19 | 1983-08-20 | Irvin Fallskerms Ab | APPLICATION FOR PARK SCREEN SCALOTS |
| CN104276288A (en) * | 2014-10-27 | 2015-01-14 | 北京空间机电研究所 | Composite conical slotted parachute and structural design method thereof |
| US9139278B1 (en) * | 2013-09-30 | 2015-09-22 | Google Inc. | Methods and systems for turning an envelope into a parachute |
| CN107600432A (en) * | 2017-10-27 | 2018-01-19 | 航宇救生装备有限公司 | Seat-stabilizer parachute |
| CN107618669A (en) * | 2017-09-20 | 2018-01-23 | 襄阳宏伟航空器有限责任公司 | A kind of parachute with apical pore lid |
| US20180141667A1 (en) * | 2016-11-21 | 2018-05-24 | Kitty Hawk Corporation | Cinched parachute |
-
2018
- 2018-11-16 CN CN201811368753.2A patent/CN109436339B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE8201052L (en) * | 1982-02-19 | 1983-08-20 | Irvin Fallskerms Ab | APPLICATION FOR PARK SCREEN SCALOTS |
| US9139278B1 (en) * | 2013-09-30 | 2015-09-22 | Google Inc. | Methods and systems for turning an envelope into a parachute |
| CN104276288A (en) * | 2014-10-27 | 2015-01-14 | 北京空间机电研究所 | Composite conical slotted parachute and structural design method thereof |
| US20180141667A1 (en) * | 2016-11-21 | 2018-05-24 | Kitty Hawk Corporation | Cinched parachute |
| CN107618669A (en) * | 2017-09-20 | 2018-01-23 | 襄阳宏伟航空器有限责任公司 | A kind of parachute with apical pore lid |
| CN107600432A (en) * | 2017-10-27 | 2018-01-19 | 航宇救生装备有限公司 | Seat-stabilizer parachute |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109436339B (en) | 2022-07-15 |
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