CN103754371A - Ram air parachute with silk air inlet valve assisting air inflation - Google Patents
Ram air parachute with silk air inlet valve assisting air inflation Download PDFInfo
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- CN103754371A CN103754371A CN201410048600.5A CN201410048600A CN103754371A CN 103754371 A CN103754371 A CN 103754371A CN 201410048600 A CN201410048600 A CN 201410048600A CN 103754371 A CN103754371 A CN 103754371A
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Abstract
The invention belongs to the technical field of spacecraft recovery and landing, and relates to a ram air parachute with a silk air inlet valve assisting air inflation. The silk air inlet valve device is additionally arranged on the lower airfoil of a first-stage open air chamber of the ram air parachute. During the parachute opening and air inflation processes, due to traction of a recovery object, the lower airfoil of the ram air parachute bears large dynamic pressure. Under the action of the dynamic pressure, the silk air inlet valve of the lower airfoil is opened and assists air inflation of the air chamber. After the air chamber is inflated, the difference between pressure in the air chamber and pressure outside the air chamber is balanced, and the air inlet valve is closed to prevent air in the air chamber from leaking.
Description
Technical field
The invention belongs to space flight and return and the technical field of landing, relate to a kind of ram air parachute of silk air inlet valve supplemental inflatable.
Background technology
Along with space flight is returned and the developing rapidly of the technology of landing, also more and more higher to the accuracy requirement of Spacecraft Recovery and landing, thus parachute system has been proposed to have the technical requirements of glide ability and operability.The eighties mid-term, the U.S. starts development for the large-scale ram air parachute of Spacecraft Recovery, has obtained good theory and experimental investigation achievement.Parafoil technology enters Spacecraft Recovery technical field, makes parachute speed reduction gearing become " controlled glide falls to presumptive area " by traditional " falling without control ", has overcome the shortcoming that traditional parachute racks, touch-down dispersion is large.The excellent properties of ram air parachute is indicating that it will have a wide range of applications in Spacecraft Recovery field.Ram air parachute is made by yielding textile material, at its opening process, is difficult to guarantee the open-shaped state of admission port, completes smoothly inflation.Therefore, the gas replenishment process of ram air parachute is a very complex process, is also a key link that concerns success or failure.Yet, at present in the development field of ram air parachute, also there is no the technology of effective supplemental inflatable.How to guarantee ram air parachute inflation smoothly in opening process, and there is higher reliability, become a technical barrier of its development, also become a technical bottleneck of ram air parachute development.
During ram air parachute parachute-opening, shape when canopy is drawn out and and attitude are difficult to control, and admission port is not over against carrying out flow path direction, and in this simultaneously, the phenomenon that parafoil canopy easily occurs subsiding top airfoil admission port is closed, cannot inflate corresponding air chamber.Above situation all can cause ram air parachute in the short time, to inflate shaping again, even can cause ram air parachute in whole flight course, all cannot complete inflation and be shaped, and affects the aerodynamic characteristic of whole recovery system, cannot complete aerial mission.For this reason, need to adopt certain ancillary technique to help ram air parachute inflation, make in the situation of admission port sealing, air chamber still can be inflated, and improves the reliability of ram air parachute parachute-opening inflation.
Summary of the invention
The object of the invention is in order to solve the problem that in ram air parachute gas replenishment process, admission port sealing cannot be inflated, a kind of ram air parachute of silk air inlet valve supplemental inflatable is proposed, this ram air parachute by using air inlet valve to carry out lower aerofoil inflation, seals thereby solve admission port the problem that cannot inflate in gas replenishment process.
The object of the invention is to be achieved through the following technical solutions.
The ram air parachute of a kind of silk air inlet valve supplemental inflatable of the present invention, this ram air parachute comprises top airfoil, lower aerofoil and rib, and the rib of top airfoil and lower aerofoil and both sides surrounds air chamber, and air chamber front end is admission port; On lower aerofoil, have perforate, packing cloth is fixed on perforate from air chamber inside by plural fixedly pressure zone, forms air inlet valve; Every two fixedly gapped between pressure zone.
The present invention opens the lower aerofoil increase silk air inlet valve device of air chamber in the ram air parachute first order; In parachute-opening gas replenishment process, due to the traction of regenerant, the lower aerofoil of ram air parachute is by the larger dynamic pressure of carrying.Under this dynamic pressure effect, the silk air inlet valve of lower aerofoil will be opened, the chamber inflated at auxiliary its place.After being full of of air chamber, the inside and outside differential pressure of air chamber reaches balance, and air inlet valve will be closed, and prevent the air leakage in air chamber.
Beneficial effect
The present invention can assist ram air parachute inflation, can in the situation that admission port is closed, make air chamber complete inflation, thereby can improve the reliability of ram air parachute parachute-opening inflation.
The present invention, in supplemental inflatable, has also prevented that air chamber from leaking gas by air inlet valve, causes the loss of pressure in air chamber.
The present invention is silk class, can be arranged on textile material product.
Accompanying drawing explanation
Fig. 1 is the structural representation of parafoil;
Fig. 2 is the structural representation of air inlet valve.
The specific embodiment
Below in conjunction with drawings and Examples, the present invention will be further described.
Embodiment
As depicted in figs. 1 and 2, a kind of ram air parachute of silk air inlet valve supplemental inflatable, this ram air parachute comprises top airfoil 1, lower aerofoil 3 and rib 2, and the rib 2 of top airfoil 1 and lower aerofoil 3 and both sides surrounds air chamber, and air chamber front end is admission port; On lower aerofoil 3, have square hole 4, its length of side is about 80% of air chamber width, packing cloth 5 from air chamber inside by six fixedly pressure zone 6 be fixed on square hole 4, form air inlet valve; Four fixedly pressure zone 6 be separately fixed on four angles of square hole 4, two other fixedly pressure zone 6 be fixed on the midway location on two long limits of slot 4.Fixedly the minor increment between pressure zone 6 is 45% of the square hole length of side.
In parachute-opening gas replenishment process, in the traction of regenerant, the lower aerofoil of ram air parachute will become the windward side of whole parafoil, and dynamic pressure Main Function is on the lower aerofoil of parafoil.Under this dynamic pressure effect, the packing cloth of the silk air inlet valve of lower aerofoil will be opened, and air enters into air chamber inside from perforate, auxiliary its inflation.
After the air chamber with air inlet valve is full of, air chamber inside and outside differential pressure reaches balance, and the packing cloth of air inlet valve will fall back in perforate, thereby perforate is sealed, air in air chamber can not let out from perforate, has guaranteed the pressure of air chamber inside, has guaranteed the inflation profile of ram air parachute yet.
The unspecified part of the present invention belongs to general knowledge as well known to those skilled in the art.
Claims (1)
1. a ram air parachute for silk air inlet valve supplemental inflatable, this ram air parachute comprises top airfoil, lower aerofoil and rib, and the rib of top airfoil and lower aerofoil and both sides surrounds air chamber, and air chamber front end is admission port; It is characterized in that: on lower aerofoil, have perforate, packing cloth is fixed on perforate from air chamber inside by plural fixedly pressure zone, form air inlet valve; Every two fixedly gapped between pressure zone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410048600.5A CN103754371B (en) | 2014-02-12 | 2014-02-12 | Ram air parachute with silk air inlet valve assisting air inflation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410048600.5A CN103754371B (en) | 2014-02-12 | 2014-02-12 | Ram air parachute with silk air inlet valve assisting air inflation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103754371A true CN103754371A (en) | 2014-04-30 |
| CN103754371B CN103754371B (en) | 2017-05-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410048600.5A Active CN103754371B (en) | 2014-02-12 | 2014-02-12 | Ram air parachute with silk air inlet valve assisting air inflation |
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| Country | Link |
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| CN (1) | CN103754371B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104527983A (en) * | 2014-12-15 | 2015-04-22 | 宏光空降装备有限公司 | Parachute canopy made from elastic silks |
| CN109250123A (en) * | 2018-10-19 | 2019-01-22 | 航宇救生装备有限公司 | A kind of split inflation ram air parachute |
| CN114572403A (en) * | 2022-03-16 | 2022-06-03 | 南京航空航天大学 | Fast opening parafoil structure and opening method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2193322Y (en) * | 1994-04-15 | 1995-03-29 | 王嘉謇 | Novel inflatable parafoil |
| CN2365132Y (en) * | 1999-03-22 | 2000-02-23 | 李明 | Paraglider |
| CN2832661Y (en) * | 2005-08-11 | 2006-11-01 | 杨玉山 | Escape chute |
| CN2844003Y (en) * | 2005-12-20 | 2006-12-06 | 王云岭 | Balloon Parachute |
| CN202911949U (en) * | 2012-10-31 | 2013-05-01 | 航宇救生装备有限公司 | Parafoil |
| CN202987511U (en) * | 2012-12-03 | 2013-06-12 | 航宇救生装备有限公司 | Ram-type balloon parachute |
-
2014
- 2014-02-12 CN CN201410048600.5A patent/CN103754371B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2193322Y (en) * | 1994-04-15 | 1995-03-29 | 王嘉謇 | Novel inflatable parafoil |
| CN2365132Y (en) * | 1999-03-22 | 2000-02-23 | 李明 | Paraglider |
| CN2832661Y (en) * | 2005-08-11 | 2006-11-01 | 杨玉山 | Escape chute |
| CN2844003Y (en) * | 2005-12-20 | 2006-12-06 | 王云岭 | Balloon Parachute |
| CN202911949U (en) * | 2012-10-31 | 2013-05-01 | 航宇救生装备有限公司 | Parafoil |
| CN202987511U (en) * | 2012-12-03 | 2013-06-12 | 航宇救生装备有限公司 | Ram-type balloon parachute |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104527983A (en) * | 2014-12-15 | 2015-04-22 | 宏光空降装备有限公司 | Parachute canopy made from elastic silks |
| CN109250123A (en) * | 2018-10-19 | 2019-01-22 | 航宇救生装备有限公司 | A kind of split inflation ram air parachute |
| CN114572403A (en) * | 2022-03-16 | 2022-06-03 | 南京航空航天大学 | Fast opening parafoil structure and opening method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103754371B (en) | 2017-05-03 |
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Effective date of registration: 20180716 Address after: 100076 Beijing Fengtai District East Highland Wanyuan Dongli 99 Patentee after: Beijing spaceflight Creative Technology Co., Ltd. Address before: 100076 Beijing South Fengtai District Road 1 Dahongmen 9201 mailbox 5 boxes Patentee before: Beijing Research Institute of Space Mechanical & Electrical Technology |
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Effective date of registration: 20211011 Address after: 100076 Beijing South Fengtai District Road 1 Dahongmen 9201 mailbox 5 boxes Patentee after: BEIJING INSTITUTE OF SPACE MECHANICS & ELECTRICITY Patentee after: Beijing spaceflight Creative Technology Co.,Ltd. Address before: 100076 Beijing Fengtai District East Highland Wanyuan Dongli 99 Patentee before: Beijing spaceflight Creative Technology Co.,Ltd. |