CN105984596A - Multi-air-chamber exhaust type recovery air bag - Google Patents
Multi-air-chamber exhaust type recovery air bag Download PDFInfo
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- CN105984596A CN105984596A CN201510661047.7A CN201510661047A CN105984596A CN 105984596 A CN105984596 A CN 105984596A CN 201510661047 A CN201510661047 A CN 201510661047A CN 105984596 A CN105984596 A CN 105984596A
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- pneumatophore
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Abstract
The invention discloses a large low-pressure multi-air-chamber exhaust type recovery air bag. The large low-pressure multi-air-chamber exhaust type recovery air bag is characterized in that the air bag is provided with a rectangular air bag body outside, the interior of the air bag is evenly divided into independent air chambers through air chamber partition walls, adjacent air chambers are communicated through air chamber through holes, the air bag body outside each air chamber is provided with exhaust holes which are sealed by exhaust membrane pieces, and the exhaust membrane pieces are fixed by metal frames and cover plates through screws. The multi-air-chamber exhaust type recovery air bag which is used for safely recovering a large thin-shell spacecraft is simple in design, lightweight, easy in buffer overload adjusting and capable of sufficiently achieving quantitative control of buffer overload and avoiding second rebound.
Description
Technical field
The invention belongs to space flight ground experiment recovery technology field, be specifically related to a kind of large-scale low pressure many air chambers exhaust and reclaim air bag.
Background technology
Large Launch Vehicle is before target range is launched, it is necessary to carry out corresponding ground validation test, at full speed along with China's aerospace industry
Development, requires more and more higher to the carrying capacity of carrier rocket, and the overall dimensions of rocket is the most increasing, in order to reduce itself
Weight, improves rocket payload carrying capacity, and the structural requirement of rocket is more and more thinner.Therefore, large-scale separation is carried out on ground
In test, easily may cause the damage of product, destruction.
The surface separation of shape structure bigger for the past reclaims, and the methods such as sponge kind foamed materials, sand are laid in domestic usual employing,
Show that some reclaim empirical parameter.But the method i.e. exists buffering overload is difficult to the difficulty of regulation, there is again recovery body and occur anti-
Bullet causes the danger of secondary pulse, and needs to be equipped with the padded coaming of a large amount of thickness in testing ground, wastes time and energy.Last century 90
Age the U.S., the spacefaring nation such as Russia begins with air bag buffer system and realizes the soft landing of detector.Such as, 1997 years
" Mars Pathfinder number " and 2004 " courage number ", " Opportunity Rover " Mars probes all have employed air bag buffer system and realize
Soft landing.Along with the development of China's aerospace industry, the size that product is reclaimed in surface separation test is increasing, and weight is more and more heavier,
The rigidity of structure is more and more lower, and separating rate is the most increasing, therefore, is designed with brand-new air bag with high intensity buffering recovery side
Case becomes a brand-new research field.
Summary of the invention
It is in buffering course that large-scale low pressure many air chambers exhaust buffering reclaims its main technical principle of air bag, utilizes pneumatophore material
Elastic-plastic deformation, the compression of pneumatophore internal gas, gas is discharged in pneumatophore, the damping etc. of material is produced when absorbing collision
Raw energy, to realize the recovery of the buffering to protection.By controlling initial gas utricule volume, initial inflated gas pressure, initially arranging
The parameters such as atmospheric pressure, exhaust port area and pneumatophore material, to reach required integrated buffer effect, make structure finally remain tail speed
Less than 1m/s, finally by following thin layer sponge buffered excess speed, reach the safe retrieving to structure.
One large-scale low pressure many air chambers exhaust that the present invention provides reclaims air bag, and it is outside is rectangle pneumatophore, and inside is passed through
Air chamber partition wall is equally divided into single air chamber, and adjacent air cells is connected by air chamber through hole, and the pneumatophore outside each air chamber has row
Pore, described steam vent closed by aerofluxus diaphragm, and aerofluxus diaphragm is fixed by screw by metal frame and cover plate.Steam vent is used for
Control the exhaust process of air bag, limit buffering overload, and keep the stability of buffering course.During air bag buffering, air vent starts
Being to close, such pneumatophore is compressed, and the pressure in air bag raises.When pressure is raised to the pressure at expulsion of air bag, air vent
Moment opens, and air bag starts outside aerofluxus.The most both cut down buffering overload, inhibited again bounce-back, until it is complete to reclaim product
Static get off.
Described pneumatophore is outside also has air-filled pore, pressure transducer to place mouth, and air-filled pore is pneumatophore fast aeration, by this pressure
Force transducer is placed mouth and is put into inside pneumatophore by pressure transducer, measures the pressure change procedure of inside air bag in buffering course.
Described air chamber is 8, and the width of each air chamber is the half that pneumatophore is wide, and length is the 1/4 of pneumatophore length.
Described pneumatophore draws material for sealing air tight chemical industry Kev.
Lay sponge below described pneumatophore, reclaim the residual velocity of product with buffering.
Described aerofluxus diaphragm is plastic sheeting.
Beneficial effects of the present invention is as follows:
The present invention compared with prior art designs simply, light weight, buffering overload can easily be accommodated, it is possible to fully realize buffered
Carry fixing quantity and avoid secondary bounce-back.Recovery air bag of the present invention is first for the peace of large-scale shell spacecraft structure
Full recovery.
Accompanying drawing explanation
Fig. 1 is the front view of many air chambers exhaust recovery air bag of the present invention；
Fig. 2 is the side view of many air chambers exhaust recovery air bag of the present invention；
Many air chambers exhaust of Fig. 3 present invention reclaims the top view of air bag；
Wherein, 1-steam vent 2-air chamber partition wall 3-air chamber through hole 5-air-filled pore 6-aerofluxus diaphragm 7-pressure transducer places mouth
Fig. 4 is the structural representation of steam vent in the present invention；
Fig. 5 is gasbag pressure time history curve chart in embodiment；
Fig. 6 is air bag buffering overload correlation curve figure in embodiment.
Detailed description of the invention
With detailed description of the invention, technical scheme is described in further details below in conjunction with the accompanying drawings.Obviously, described
Embodiment is only a part of embodiment of the present invention rather than whole embodiments.Based on embodiments of the invention, this area
The every other embodiment that technical staff is obtained under not making creative work premise, broadly falls into claimed
Scope.
As a example by reclaiming trousers, recovery technology condition is as follows:
By calculating ginsengs such as selecting the blowing pressure, initial exhaust pressure, exhaust port area, air chamber distribution, the pneumatophore strength of materials
Several to trousers recovery overload accurately control.
As it is shown in figure 1, it is rectangle pneumatophore that the present invention reclaims air bag outside, inside is equally divided into individually by air chamber partition wall
8 air chambers, adjacent air cells is connected by air chamber through hole, and the pneumatophore outside each air chamber has steam vent, and described steam vent leads to
Crossing aerofluxus diaphragm to close, aerofluxus diaphragm is plastic sheeting, metal frame and cover plate are fixed by screw.Also fill outside pneumatophore
Pore, pressure transducer place mouth, place mouth by this pressure transducer and are put into inside pneumatophore by pressure transducer.
Pneumatophore selects 4500N/5cm to seal air tight chemical industry Kev and draws material, and selects high intensity stitching thread to sew in junction,
Reach the requirement of strength design of overall 5000N/5cm.
Determined the dynamic failure intensity of initial exhaust mouth by trial test, in test, selected initial exhaust pressure is 0.002 atmospheric pressure.
As shown in Figure 4, steam vent internal diameter Φ 420mm, each air chamber one, arrange along axial half high position of air bag, initially arrange
Atmospheric pressure is designed as 0.002 atmospheric pressure.Each steam vent is 1mm circle by 32 screws and plastic film, elastic string, thickness
Shape cover plate is closed.
Below air bag, laying depth is that the sponge of 300mm is as level 2 buffering.
The folded airbag closed is lain in a horizontal plane on sponge by correct orientation.
By inflation inlet, folded airbag is carried out QI invigorating, accurately controlled initial inflated gas pressure by pressure transducer.
By reclaiming product weight processing simulation counterweight, and design free counterweight freely falling body distance air bag according to recovering condition
It is consistent that upper level, it is ensured that during counterweight contact air bag upper surface, speed is equal to 8.3m/s, i.e. guarantee two then reclaim kinetic energy.
The overload time course suffered by counterweight is measured in whole buffering overload by installing g sensor in simulation counterweight, according to
Overload time course is calculated counterweight and lands residual velocity.
As shown in Figure 6, produced overload peak value is 4.5g to result of implementation, pulsewidth about 250ms, it is possible to realize the peace of trousers
Full recovery.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses the present invention.To these
The multiple amendment of embodiment is apparent from for the patented technology personnel of this area, and generic principles defined herein can
With without departing from the present invention, realize in other embodiments.Therefore, the present invention is not intended to be limited to herein
These shown embodiments, and it is to fit to the widest range consistent with principles disclosed herein and features of novelty.
Claims (6)
1. large-scale low pressure many air chambers exhaust reclaims an air bag, and it is outside is rectangle pneumatophore, internal flat by air chamber partition wall
Being divided into single air chamber, adjacent air cells is connected by air chamber through hole, and the pneumatophore outside each air chamber has steam vent, and it is special
Levying and be, described steam vent is closed by aerofluxus diaphragm, and aerofluxus diaphragm is fixed by screw by metal frame and cover plate.
One the most according to claim 1 large-scale low pressure many air chambers exhaust reclaims air bag, it is characterised in that described air bag
External body also has air-filled pore, pressure transducer to place mouth, places mouth by this pressure transducer and pressure transducer is put into pneumatophore
Internal.
One the most according to claim 1 large-scale low pressure many air chambers exhaust reclaims air bag, it is characterised in that described air chamber
Being 8, the width of each air chamber is the half that pneumatophore is wide, and length is the 1/4 of pneumatophore length.
One the most according to claim 1 and 2 large-scale low pressure many air chambers exhaust reclaims air bag, it is characterised in that described
Pneumatophore draws material for sealing air tight chemical industry Kev.
One the most according to claim 1 and 2 large-scale low pressure many air chambers exhaust reclaims air bag, it is characterised in that described
Sponge is laid below pneumatophore.
One the most according to claim 1 and 2 large-scale low pressure many air chambers exhaust reclaims air bag, it is characterised in that described
Aerofluxus diaphragm is plastic sheeting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510661047.7A CN105984596A (en) | 2015-10-14 | 2015-10-14 | Multi-air-chamber exhaust type recovery air bag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510661047.7A CN105984596A (en) | 2015-10-14 | 2015-10-14 | Multi-air-chamber exhaust type recovery air bag |
Publications (1)
| Publication Number | Publication Date |
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| CN105984596A true CN105984596A (en) | 2016-10-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510661047.7A Pending CN105984596A (en) | 2015-10-14 | 2015-10-14 | Multi-air-chamber exhaust type recovery air bag |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108545198A (en) * | 2018-04-23 | 2018-09-18 | 长沙理工大学 | A kind of working method of airborne occupant's Bionic air bag neck-protecting device |
| CN108755777A (en) * | 2018-08-03 | 2018-11-06 | 中铁隆工程集团有限公司 | A kind of middle buried water stop with dispersion decompression function |
| CN110901960A (en) * | 2019-10-31 | 2020-03-24 | 北京空间机电研究所 | Complex recovery landing control system for re-entry capsule |
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|---|---|---|---|---|
| CN1923618A (en) * | 2006-09-22 | 2007-03-07 | 湖南大学 | Double gasbag buffer unit |
| CN200978005Y (en) * | 2006-09-25 | 2007-11-21 | 湖南大学 | Multi-stage gasbag combination buffer unit |
| JP4447151B2 (en) * | 2000-12-04 | 2010-04-07 | 藤倉航装株式会社 | Air bag for hanging sac |
| CN102717891A (en) * | 2012-07-05 | 2012-10-10 | 北京理工大学 | Anti-air dispersion overload buffering device suitable for micro detection robot |
| CN104149976A (en) * | 2014-08-26 | 2014-11-19 | 中国人民解放军装甲兵工程学院 | Combined air-drop buffering air bag with active synchronous quick-opening exhaust function |
| CN204594353U (en) * | 2015-04-20 | 2015-08-26 | 北京强度环境研究所 | Large-scale High-Pressure many air chambers exhaust reclaims air bag |
| CN205076061U (en) * | 2015-10-14 | 2016-03-09 | 北京强度环境研究所 | Many air chambers exhaust formula recovery gas bag |
-
2015
- 2015-10-14 CN CN201510661047.7A patent/CN105984596A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4447151B2 (en) * | 2000-12-04 | 2010-04-07 | 藤倉航装株式会社 | Air bag for hanging sac |
| CN1923618A (en) * | 2006-09-22 | 2007-03-07 | 湖南大学 | Double gasbag buffer unit |
| CN200978005Y (en) * | 2006-09-25 | 2007-11-21 | 湖南大学 | Multi-stage gasbag combination buffer unit |
| CN102717891A (en) * | 2012-07-05 | 2012-10-10 | 北京理工大学 | Anti-air dispersion overload buffering device suitable for micro detection robot |
| CN104149976A (en) * | 2014-08-26 | 2014-11-19 | 中国人民解放军装甲兵工程学院 | Combined air-drop buffering air bag with active synchronous quick-opening exhaust function |
| CN204594353U (en) * | 2015-04-20 | 2015-08-26 | 北京强度环境研究所 | Large-scale High-Pressure many air chambers exhaust reclaims air bag |
| CN205076061U (en) * | 2015-10-14 | 2016-03-09 | 北京强度环境研究所 | Many air chambers exhaust formula recovery gas bag |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108545198A (en) * | 2018-04-23 | 2018-09-18 | 长沙理工大学 | A kind of working method of airborne occupant's Bionic air bag neck-protecting device |
| CN108755777A (en) * | 2018-08-03 | 2018-11-06 | 中铁隆工程集团有限公司 | A kind of middle buried water stop with dispersion decompression function |
| CN110901960A (en) * | 2019-10-31 | 2020-03-24 | 北京空间机电研究所 | Complex recovery landing control system for re-entry capsule |
| CN110901960B (en) * | 2019-10-31 | 2022-07-29 | 北京空间机电研究所 | Complex recovery landing control system for re-entry capsule |
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