CN202609097U - Air inflation brake parachute - Google Patents
Air inflation brake parachute Download PDFInfo
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- CN202609097U CN202609097U CN201220272625XU CN201220272625U CN202609097U CN 202609097 U CN202609097 U CN 202609097U CN 201220272625X U CN201220272625X U CN 201220272625XU CN 201220272625 U CN201220272625 U CN 201220272625U CN 202609097 U CN202609097 U CN 202609097U
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- umbrella cover
- air
- inflation
- parachute
- lower frame
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Abstract
Provided is an air inflation brake parachute. A top hole is arranged at the center of a parachute surface of the air inflation brake parachute. The surface of an excircle of an annular air bag is connected with the outer edge of the parachute surface. The cross section of the annular air bag is circular, and the ratio of the diameter of the annular air bag and the projection diameter of the parachute surface is 1:30. A circular top hole reinforced frame is fixedly adhered to the top of the parachute surface, and the center of the top hole reinforced frame is overlapped with that of the parachute surface. Two ends of each traction rope are respectively fixedly connected with the surface of the excircle of the air bag and a reentry capsule. An air distribution pipe is fixed in the reentry capsule, one ends of a plurality of air inflation pipes arranged on the air distribution pipe are respectively connected with air outlets arranged on the air distribution pipe, and the other ends of the plurality of air inflation pipes are respectively connected with air inflation ports which are uniformly distributed on the periphery of the annular air bag. The air inflation pipes are adhered to the traction ropes. The air inflation brake parachute provides extra resistance for inverted-cone-shaped air inflation reentry vehicles, reduces speed of the inverted-cone-shaped air inflation reentry vehicles when entering the dense atmosphere, accordingly reduces aerodynamic heat load of an air inflation cover, and can increase stability of the inverted-cone-shaped air inflation reentry vehicles.
Description
Technical field
The present invention relates to the modern aerospace field, specifically is a kind of inflation deceleration parachute.
Background technology
Tradition reenters the deceleration parachute device of return system usually by drogue, pilot-parachute, and main chute and storage umbrella parachute deployment means form.Wherein main chute generally adopts ring sail type, and diameter is about 20m.See from the comparatively proven technique that can retrieve now; In the stretching process of the parachute-opening of traditional large umbrella; Because there is bigger velocity contrast in top and the bottom, stretching end is instantaneous, may cause the canopy top violent whipping to occur; Cause canopy damaged or twine, when serious even can cause parachute to lose efficacy.On the other hand, traditional parachute uses the parachute-opening of passive inflation mode, and opening altitude, parachute-opening dynamic pressure etc. is all had series of requirements.In addition, drogue, pilot-parachute, main chute, even also need many tools main chute sometimes, so complicated structure has reduced the reliability that reenters return system.
In recent years, each spacefaring nation of the world was hankered after the research of inflatable reentry vehicle, the for example Russia and the IRDT (inflatable reentry vehicle) of European Space Agency, the IRVE of NASA (inflatable reentry vehicle test).This kind technology will reenter recoverable module and process cylindrically, at the affixed back taper inflatable cover of its front end, when the recoverable module atmospheric reentry, open inflatable cover, can play the effect of solar heat protection and deceleration.The inflatable reentry vehicle reenters return system compared to tradition and has advantages such as light weight, packaging volume be little.Yet, use the meeting of this kind inflatable reentry vehicle because aerothermal load is excessive separately, and to the too high problem of material requirements.At present, the research and development of relevant light flexible high strength and high temperature material are slow, are to hinder the major cause that inflatable reentry vehicle gets into the practical stage.In addition, show the inflatable reentry vehicle of back taper, also will face the stability problem that gets into the atmospheric envelope transitional region according to present numerical Method Research.This can produce disadvantageous load to structure, and increases the difficulty of jump area point prediction.
Summary of the invention
Be the undue requirement of the inflatable reentry vehicle of reduction back taper to material property, and alleviate the stability problem that reenters in the way, the present invention proposes a kind of inflation deceleration parachute.
The present invention includes annular air-pocket, umbrella cover, apical pore reinforced bulkhead, annular crack band, stiffening band, hauling rope, charging valve, appendix and recoverable module.The umbrella cover of described inflation deceleration parachute is the conisphere face.There is apical pore at the center of said umbrella cover.The outer round surface of annular air-pocket is connected with the outer rim of umbrella cover.The cross-sectional plane of described annular air-pocket is circular, and the ratio of the diameter of this annular air-pocket and the diameter projected of umbrella cover is 1:30.Top adhesive at umbrella cover is fixed with circular apical pore reinforced bulkhead, and the center of this apical pore reinforced bulkhead overlaps with the center of umbrella cover.One end of each hauling rope is fixed on the outer round surface of annular air-pocket, and the other end of each hauling rope is captiveed joint with recoverable module.
Compression gas tank is fixed in the recoverable module.Gas-distributing pipe is fixed in the recoverable module, and is positioned at compression gas tank air extractor duct end.On this gas-distributing pipe, be evenly distributed with a plurality of air extractor ducts.One end of a plurality of appendixs respectively with said gas-distributing pipe on air extractor duct be communicated with, the other end of a plurality of appendixs respectively be evenly distributed on the annular air-pocket circumference on each inflation inlet be communicated with.Said appendix sticks on the hauling rope.
, each lays the bolt protective cover on connecting the binding bolt of upper ledge and lower frame of apical pore reinforced bulkhead.
Described apical pore reinforced bulkhead comprises upper ledge and lower frame.Umbrella cover is clipped between said upper ledge and the lower frame, and described upper ledge and lower frame are connected.At the draw-in groove of the upper surface protrusion of oriented this upper ledge in middle part on the annulus of said upper ledge surface, at the draw-in groove of also oriented this lower frame upper surface protrusion in middle part on the annulus surface of said lower frame.Draw-in groove and the draw-in groove on the lower frame on the upper ledge are chimeric each other.Said draw-in groove is an arc at the projection on upper ledge of living in or lower frame surface.
Described gas-distributing pipe is a ring pipe, and on this gas-distributing pipe, is evenly equipped with the air extractor duct bonded assembly admission port of a plurality of air extractor ducts and and compression gas tank.
In the umbrella cover upper edge this umbrella cover circumferentially, the outer rim place of the center of this umbrella cover to this umbrella cover certainly is distributed with the annular crack band of many different-diameters successively.
In the umbrella cover upper edge this umbrella cover radially, the outer rim place of the center of this umbrella cover to this umbrella cover is fixed with many stiffening bands certainly.One end of this stiffening band is captiveed joint with the apical pore reinforced bulkhead that is positioned at said umbrella cover center, and the other end of this stiffening band is fixed on the annular air-pocket.
Reenter process speed and resistance gravity than the estimation curve with height change like Fig. 7 for Balloon Parachute, the example initial condition (IC) is gross weight 3600kg, elemental height 150km, rate of onset 7819m/s, 0 ° of angle of incidence.This example algorithm uses classical quadravalence Long Gekuta method discrete motion equation gained based on the resistance model of fluid infinitesimal collision.Reenter process and begin from height 100km by figure is visible, resistance begins quick increase, and speed begins sharply to reduce, and has realized beginning to provide from the atmosphere transitional region purpose of effective resistance, and table 1 has been listed recoverable module and reentered each height corresponding parameters of process.
The present invention is applied to back taper inflation reentry vehicle, and additional friction can be provided, and reduces to get into the speed of dense atmosphere, thereby reduces the aerothermal load of inflatable cover, to reach the purpose of relaxing its material performance requirement.The perforate of deceleration parachute top, injection air-flow make the deceleration parachute top form meiobar, reduce outer rim place burbling; Prevent whirlpool break away from due to unsteady perturbation; Improve the deceleration parachute self stability, and then stable resistance and countermoment is provided, increase its stability to the back taper reentry vehicle.Deceleration parachute carries annular air-pocket in addition; From the entrained high pressure gas holder bleed of recoverable module, simultaneously to the annular air-pocket fast aeration, parachute is strutted through the several admission ports of well-distributed; Appendix sticks on the hauling rope; In the bleed process that hauling rope is exceptionally straight, there is not the requirement to opening altitude, parachute-opening dynamic pressure in the whipping phenomenon when this active parachute-opening mode both can have been avoided traditional parachute parachute-opening yet.The present invention has also solved high-altitude parachute-opening problem in addition.
Description of drawings
Fig. 1 is the whole structure figure behind the connection recoverable module;
Fig. 2 is the umbrella cover enlarged drawing of inflation deceleration parachute;
Fig. 3 is the birds-eye view of inflation deceleration parachute;
Fig. 4 is the section-drawing of apical pore reinforced bulkhead binding bolt;
Fig. 5 is the section-drawing of apical pore reinforced bulkhead draw-in groove;
Fig. 6 is the scheme drawing of gas-distributing pipe and compression gas tank;
Fig. 7 is that reentry velocity and resistance gravity compare with the height change curve.Wherein:
1. recoverable module 2. compression gas tanks 3. hauling ropes 4. annular air-pockets 5. annular crack bands
6. stiffening band 7. apical pore reinforced bulkheads 8. gas-distributing pipes 9. appendixs 10. umbrella covers
11. apical pore 12. upper ledges 13. lower frames 1 4. bolt protective covers 15. binding bolts
16. draw-in groove 17. gas control valves
The specific embodiment
Present embodiment is that a kind of injection increases steady inflation deceleration parachute, comprises annular air-pocket 4, umbrella cover 10, apical pore reinforced bulkhead 7, annular crack band 5, stiffening band 6, gas-distributing pipe 8, appendix 9 and recoverable module 1.
The umbrella cover 10 of the described inflation deceleration parachute of present embodiment is the conisphere face, and vertex of a cone solid angle is 90 °; There is apical pore 11 at the center of said umbrella cover 10.The outer round surface of annular air-pocket 4 is connected with the outer rim of umbrella cover 10; The cross-sectional plane of described annular air-pocket 4 is circular, and the ratio of the diameter projected of the diameter of this annular air-pocket 4 and umbrella cover 10 is 1:30, and in the present embodiment, umbrella cover diameter projected is 4.5 meters, and the diameter of annular air-pocket 4 is 0.15 meter.
Top adhesive at umbrella cover 10 is fixed with circular apical pore reinforced bulkhead 7, and the center of this apical pore reinforced bulkhead 7 overlaps with the center of umbrella cover 10.
Circumference at umbrella cover 10 these umbrella covers of upper edge; Outer rim place from center to this umbrella cover of this umbrella cover; Be distributed with the annular crack band 5 of many different-diameters successively; And according to the stressing conditions of umbrella cover 10, said annular crack band 5 at the distribute spacing at umbrella cover 10 tops less than the distribute spacing of said annular crack band 5 near umbrella cover 10 outer rim places.In the present embodiment, on the circumference of umbrella cover 10, be distributed with 5 annular crack bands 5, and each annular crack band 5 is respectively 0.505 meter apart from the distance at umbrella cover 10 centers, 0.705 meter, 0.925 meter, 1.165 meters, 1.425 meters.Described each annular crack band 5 is wide 26 millimeters, thick 3 millimeters.
In umbrella cover 10 upper edges this umbrella cover radially, the outer rim place of the center of this umbrella cover to this umbrella cover is fixed with many stiffening bands 6 certainly.One end of this stiffening band 6 is captiveed joint with the apical pore reinforced bulkhead 7 that is positioned at said umbrella cover center, and the other end of this stiffening band 6 is fixed on the outer round surface of annular air-pocket 4.In the present embodiment, 6 stiffening bands 6 are distributed on the said umbrella cover 10, and the width of each stiffening band is 40 millimeters, and thickness is 6 millimeters.
The quantity of hauling rope 3 is identical with the quantity of said stiffening band.One end of each hauling rope 3 is fixed on the outer round surface of annular air-pocket 4, and the other end of each hauling rope 3 is captiveed joint with recoverable module 1.Compression gas tank 2 is placed in the said recoverable module.The air extractor duct of said compression gas tank 2 is equipped with gas-distributing pipe 8, and a plurality of air extractor ducts are evenly arranged respectively on this gas-distributing pipe.One end of a plurality of appendixs 9 respectively with this gas-distributing pipe 8 on air extractor duct be communicated with, the other end of a plurality of appendixs 9 respectively be evenly distributed on annular air-pocket 4 circumference on each inflation inlet be communicated with.In the present embodiment, described appendix 9 has 3, all adopts the elastic caoutchouc flexible pipe.On the said gas-distributing pipe on the quantity of air extractor duct and annular air-pocket 4 circumference each inflation inlet quantity identical.
Described apical pore reinforced bulkhead 7 is an annular arrangement, comprises upper ledge 12 and lower frame 13.The upper ledge 12 of said apical pore reinforced bulkhead 7 is the annular arrangement with the footpath with the lower frame 13 of apical pore reinforced bulkhead 7.Upper ledge 12 is positioned at the upper surface of umbrella cover 10, and lower frame 13 is positioned at the lower surface of umbrella cover 10, with binding bolt 15 said upper ledge and lower frame is connected, and described upper ledge and lower frame and umbrella cover are connected.At the draw-in groove of the upper surface protrusion of oriented this upper ledge 12 in middle part on the annulus of said upper ledge 12 surface, at the draw-in groove of also oriented this lower frame 13 upper surfaces protrusion in middle part on the annulus surface of said lower frame 13; Draw-in groove on draw-in groove on the upper ledge 12 and the lower frame 13 is chimeric each other, is used to prevent that umbrella cover 10 from sliding between upper ledge 12 and lower frame 13.For guaranteeing the flow field characteristic of umbrella cover 10 upper surfaces, said draw-in groove is an arc at the projection on upper ledge 12 of living in or lower frame 13 surfaces.
Equally, be to guarantee the flow field characteristic of umbrella cover 10 upper surfaces, on each connects the binding bolt 15 of upper ledge 12 and lower frame 13 of apical pore reinforced bulkhead 7, lay bolt protective cover 14.Said bolt protective cover 14 is the pot cover shape, processes with sheetmetal, sticks with glue each the bolt cap place on umbrella cover 10.
Described gas-distributing pipe 8 is a ring pipe.Be distributed with the air extractor duct bonded assembly admission port of a plurality of air extractor ducts and and compression gas tank 2 on this gas-distributing pipe 8.The quantity of inflation inlet is identical on the quantity of said air extractor duct and annular air-pocket 4 circumference.Gas-distributing pipe 8 is fixed in the recoverable module 1, and the admission port of gas-distributing pipe is communicated with the air extractor duct of compression gas tank 2 through gas control valve 17, each air extractor duct of gas-distributing pipe 8 is communicated with appendix 9 respectively; Unlatching through gas control valve 17 control compression gas tanks or close realizes the inflation to the inflation deceleration parachute.Said gas control valve 17 adopts electronic single-seat adjusting valve; Said compression gas tank 2 adopts vertical nitrogen pot.
Claims (6)
1. an inflation deceleration parachute is characterized in that, comprises annular air-pocket, umbrella cover, apical pore reinforced bulkhead, annular crack band, stiffening band, hauling rope, charging valve, appendix and recoverable module; The umbrella cover of described inflation deceleration parachute is the conisphere face; There is apical pore at the center of said umbrella cover; The outer round surface of annular air-pocket is connected with the outer rim of umbrella cover; The cross-sectional plane of described annular air-pocket is circular, and the ratio of the diameter of this annular air-pocket and the diameter projected of umbrella cover is 1:30; Top adhesive at umbrella cover is fixed with circular apical pore reinforced bulkhead, and the center of this apical pore reinforced bulkhead overlaps with the center of umbrella cover; One end of each hauling rope is fixed on the outer round surface of annular air-pocket, and the other end of each hauling rope is captiveed joint with recoverable module;
Compression gas tank is fixed in the recoverable module; Gas-distributing pipe is fixed in the recoverable module, and is positioned at compression gas tank air extractor duct end; On this gas-distributing pipe, be evenly distributed with a plurality of air extractor ducts; One end of a plurality of appendixs respectively with said gas-distributing pipe on air extractor duct be communicated with, the other end of a plurality of appendixs respectively be evenly distributed on the annular air-pocket circumference on each inflation inlet be communicated with; Said appendix sticks on the hauling rope;
, each lays the bolt protective cover on connecting the binding bolt of upper ledge and lower frame of apical pore reinforced bulkhead.
2. a kind of according to claim 1 inflation deceleration parachute is characterized in that described apical pore reinforced bulkhead comprises upper ledge and lower frame; Umbrella cover is clipped between said upper ledge and the lower frame, and described upper ledge and lower frame are connected; At the draw-in groove of the upper surface protrusion of oriented this upper ledge in middle part on the annulus of said upper ledge surface, at the draw-in groove of also oriented this lower frame upper surface protrusion in middle part on the annulus surface of said lower frame; Draw-in groove and the draw-in groove on the lower frame on the upper ledge are chimeric each other.
3. a kind of according to claim 1 inflation deceleration parachute is characterized in that described gas-distributing pipe is a ring pipe, and on this gas-distributing pipe, is evenly equipped with the air extractor duct bonded assembly admission port of a plurality of air extractor ducts and and compression gas tank.
4. a kind of according to claim 1 inflation deceleration parachute is characterized in that, in the umbrella cover upper edge this umbrella cover circumferentially, the outer rim place of the center of this umbrella cover to this umbrella cover certainly is distributed with the annular crack band of many different-diameters successively.
5. a kind of according to claim 1 inflation deceleration parachute is characterized in that, in the umbrella cover upper edge this umbrella cover radially, the outer rim place of the center of this umbrella cover to this umbrella cover is fixed with many stiffening bands certainly; One end of this stiffening band is captiveed joint with the apical pore reinforced bulkhead that is positioned at said umbrella cover center, and the other end of this stiffening band is fixed on the annular air-pocket.
6. like the said a kind of inflation deceleration parachute of claim 2, it is characterized in that said draw-in groove is an arc at the projection on upper ledge of living in or lower frame surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220272625XU CN202609097U (en) | 2012-06-11 | 2012-06-11 | Air inflation brake parachute |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220272625XU CN202609097U (en) | 2012-06-11 | 2012-06-11 | Air inflation brake parachute |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202609097U true CN202609097U (en) | 2012-12-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220272625XU Expired - Fee Related CN202609097U (en) | 2012-06-11 | 2012-06-11 | Air inflation brake parachute |
Country Status (1)
| Country | Link |
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| CN (1) | CN202609097U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102745347A (en) * | 2012-06-11 | 2012-10-24 | 西北工业大学 | Aerating brake parachute for injection stability augmentation |
| CN104986358A (en) * | 2015-06-24 | 2015-10-21 | 西北工业大学 | Stability augmentation inflation type reentry vehicle |
-
2012
- 2012-06-11 CN CN201220272625XU patent/CN202609097U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102745347A (en) * | 2012-06-11 | 2012-10-24 | 西北工业大学 | Aerating brake parachute for injection stability augmentation |
| CN104986358A (en) * | 2015-06-24 | 2015-10-21 | 西北工业大学 | Stability augmentation inflation type reentry vehicle |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121219 Termination date: 20150611 |
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| EXPY | Termination of patent right or utility model |