CN103863580B - A kind of method for folding being suitable to piecemeal quadrate support rod-type solar sail sail face - Google Patents
A kind of method for folding being suitable to piecemeal quadrate support rod-type solar sail sail face Download PDFInfo
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- CN103863580B CN103863580B CN201410086322.2A CN201410086322A CN103863580B CN 103863580 B CN103863580 B CN 103863580B CN 201410086322 A CN201410086322 A CN 201410086322A CN 103863580 B CN103863580 B CN 103863580B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The invention discloses a kind of method for folding being suitable to piecemeal quadrate support rod-type solar sail sail face, four pieces of solar sail sail faces are folded respectively, then the summit in fold four pieces of triangle sail faces is fixed on four sail roll axles, four pieces of sail faces are rolled up respectively on four sail roll axles, sail roll axle is fixed on support packaging structure base plate, two hypotenuse summits that on adjacent sail roll axle, two triangle sail faces are adjacent are connected with the external part of two sail roll between centers support bars, complete the folding and overall storage in sail face.The invention solves sail face dividing, adopt the large area of 5 interconnection systems to support the folding problem in rod-type solar sail sail face, folding mode is simple, when support bar stretches out along sail face diagonal direction, each sail face can be driven independently to launch, launch process stabilization orderly, sail face does not have the phenomenons such as mutual winding, improves reliability.
Description
Technical field
The present invention relates to the method for folding in a kind of solar sail sail face, particularly relate to a kind of suitable in the square sail that sail face is piecemeal, the method for folding adopting 5 support rod-type solar sail sail faces connected.
Background technology
Solar sail is to utilize solar light pressure to carry out cosmonautic aircraft.In ideal conditions, Solar sail spacecraft does not need any fuel, and it can obtain lasting thrust from inexhaustible sunlight and fly to cosmic space.As long as shape and inclination angle are suitable, solar sail can fly to any direction included towards light source, has great superiority in survey of deep space.At present, the research of solar sail correlation technique has all been carried out in the U.S., Japan, Russia and Europe.
Photon strikes solar sail face is also completely reflected back, solar sail produces counteracting force promotes solar sail to carry out space travel, in order to make the optical pressure that solar energy offer is enough, solar sail must capture sunlight as much as possible, and this means that the area of sail must be sufficiently large；When launching, owing to emission space is limited, need again to be stored in less space solar sail.Accordingly, it would be desirable to the sail face of solar sail is reasonably folded, to launch at the smooth of space after ensureing solar sail injection.
Solar sail has multiple mode classification: different according to sail face shape, it is possible to be divided into square sail, circular sail and leaf sail；Different according to expansion mode, spin deploying solar sail can be divided into and support rod-type solar sail, spin deploying solar sail utilizes spin centrifugal force to realize the expansion in sail face and the maintenance of sail face shape, and supporting rod-type solar sail is then the expansion and the shape maintenance that utilize support bar to realize sail face.Solar sail sail face shape is huge, and piecemeal generally manufactures sail face.For square support rod-type solar sail, generally it is divided into four pieces of isosceles right triangle sail faces to manufacture respectively in sail face along the diagonal of square sail, is called the solar sail of sail face dividing.Quadrate support rod-type solar sail to sail face dividing, there is more common two kind connected mode in support bar and sail face: the first connected mode is to be connected with support bar respectively in summit, four, square sail face and central point, it is called 5 connections, this connected mode is conducive to sail face and support bar separately folded, it is to avoid too much interfering when launching；Summit, four, sail face and central point are not only connected by the second connected mode with support bar, and edge, sail face and support bar adjacent are carried out Mulit-point Connection, sail face is connected as a whole with support bar, this connected mode requires that sail face and support bar cooperate when folding, and the two also can disturb upon deployment.
Japan IKAROS launched in May, 2010, was successfully realized the expansion in-orbit of solar sail.The entirety in solar sail face is folded by it, utilizes spin centrifugal force to realize the stepwise development in sail face, but this folding mode is only applicable to whole square sail face is carried out, and manufactures for sail face dividing, and separately folded solar sail is not appropriate for.The U.S. is also successfully entered LEO in the NanoSail-D solar sail that in November, 2010 launches and has carried out launching experiment.NanoSail-D sail face adopts piecemeal manufacture, four pieces of sail faces carry out respectively simple vertical Z-type folding after, another roll set is on the spool being positioned at solar sail center, and support bar adopts 5 connected modes with sail face.Under the pulling force effect of support bar, sail face is launched rapidly, but is only applicable to the sail face that area is less, and the situation that sail face is piled up occurs in the expansion initial stage, likely is there is, at the sail face expansion initial stage, the situation that sail face is wound around in large area solar sail, hinders further spreading out of sail face.
Owing to solar sail configuration is different, and sail face adopts the difference that foldable integral or piecemeal fold, and the folding mode that sail face is suitable for is also different.For sail face dividing and large-scale square solar sail separately folded, that utilize support bar to launch, make four pieces of solar sail faces can synchronize expansion stable in order under support bar pulling force effect currently without better suited folding mode.
Summary of the invention
Present invention solves the technical problem that and be: overcome the deficiencies in the prior art, a kind of method for folding being suitable to piecemeal quadrate support rod-type solar sail sail face is provided, solve sail face dividing, adopt the large area of 5 interconnection systems to support the folding problem in rod-type solar sail sail face, folding mode is simple, launch process stabilization orderly, improve reliability.
The technical scheme is that a kind of method for folding being suitable to piecemeal quadrate support rod-type solar sail sail face, comprise the steps:
(1) square solar sail sail face is divided into four pieces of isosceles right triangle sail faces along two diagonals；
(2) every piece of triangle sail face folds respectively in such a way:
If the right-angled apices in every piece of triangle sail face is A, another two summit respectively B and C, take the midpoint D of hypotenuse BC, by sail face along AD doubling, AD is divided into n section, if n-1 node respectively P1、P2、……、Pn-1, in triangle ADC, the parallel lines of right-angle side AC, respectively P is made through each node1N1、P2N2、……、Pn-1Nn-1, in triangle ADB, the parallel lines of right-angle side AB, respectively P is made through each node1M1、P2M2、……、Pn-1Mn-1；Then by DP1N1And DP1M1From AP1N1C and AP1M1Traverse between B, and along P1N1And P1M1Fold；By DP2N2And DP2M2From P1N1N2P2And P1M1M2P2Between traverse, and along P2N2And P2M2Fold；Alternate directions folds according to this, until by DPn-1Nn-1And DPn-1Mn-1From Pn-2Nn-2Nn-1Pn-1And Pn-2Mn-2Mn-1Pn-1Between traverse, and along Pn-1Mn-1And Pn-1Nn-1Fold, thus completing the folding of one piece of triangle sail face；
(3) the right-angled apices A in every piece of triangle sail face is fixed on a sail roll axle, the sail roll folded is on sail roll axle, latter two hypotenuse summit B and the C rolled up is exposed at sail roll axle outer end, and four pieces of triangle sail faces are rolled up respectively on four sail roll axles；
(4) center column 1 is fixed on the base plate 3 of the packaging structure placing solar sail support bar and sail face, sail roll axle 2 and support bar spool 4 are placed around center column 1 interval, sail roll axle 2 one end is fixed on center column 1, the other end is fixed on base plate 3, support bar spool 4 is fixed on center column 1, support bar external part connects two hypotenuse summits that on adjacent sail roll axle, two triangle sail faces are adjacent, completes the storage that sail face is overall；
(5) when sail face is launched, diagonal when four support bar spools launch along sail face progressively stretches, and drives sail roll axle 2 to rotate, it is achieved the progressively expansion in sail face.
The hop count n of described AD decile is determined by the restriction h of height after the folding storage of sail face, and n is for meeting inequalitySmallest positive integral value.
The present invention compared with prior art has the advantages that
(1) folding mode of the present invention is simple, it is easy to sail face is simply folded；
(2) in the present invention, four pieces of sail faces are separately folded and roll up on different sail roll axles, and each sail face independently is launched, and in order, sail face does not have the phenomenons such as mutual winding to expansion process stabilization, and reliability is higher；
(3) position that topsail face of the present invention is connected with support bar can adjust according to the position after support bar storage, it is ensured that the motility that sail face is connected with support bar；
(4) apply the method for folding of the present invention solar sail sail face is carried out folding after, realize sail face to launch only to need four summits in sail face to apply pulling force diagonally, four direction applies to launch simultaneously simultaneously, the requirement of support bar is relatively low, it is possible to adopt various types of support bars such as inflated type support bar or rollable V shape supporting lever；
(5) after the folding mode of the application present invention folds, sail face can being driven to launch when support bar launches, expansion mode is simple, and expansion process settles at one go simultaneously, it is to avoid the problems such as height are crossed in the requirement to development mechanism that stepwise development brings.
Accompanying drawing explanation
Fig. 1 adopts 5 piecemeal quadrate support rod-type solar sail sail face schematic diagrams connected；
Fig. 2 is the folding process schematic diagram in one piece of sail face；
One piece of sail vertex of surface that Fig. 3 is after folding is fixed on the schematic diagram on sail roll axle；
Fig. 4 is one piece of sail face half volume schematic diagram on sail roll axle；
Fig. 5 is the schematic diagram that one piece of sail face is fully rolled on sail roll axle；
Fig. 6 is the connected mode schematic diagram of sail roll axle and support bar；
Fig. 7 is the schematic diagram of overall half deployed condition in sail face.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.
The present invention is directed the quadrate support rod-type solar sail of the sail face dividing of 5 interconnection systems, four summits of square sail and sail face central point are connected with support bar, and the partitioned mode in this type solar sail sail face is: along two diagonals, sail face is divided into four pieces of isosceles right triangle sail faces.Owing to sail face adopts 5 modes being connected with support bar, namely three summits in every piece of triangle sail face are all fixing with support bar is connected.Every piece of triangle sail face folds according to the mode that " L " type is folding respectively, " L " type is folding also referred to as single leaf folding mode, being based on a kind of folding mode that bionics proposes, sail face both direction is folded by it simultaneously, and the triangle sail face after folding is elongated strip.By sail vertex of surface, namely the central point of solar sail is fixed on sail roll axle, two summits of solar sail outwardly, by strip sail roll on sail roll axle.Four sail roll axles are fixed on central point certain position place, sail face, other devices coordinating solar sail are placed, make sail roll axle as close as center position, but four sail roll axles leave interval each other, it is to avoid sail roll axle is too pressed close to cause to interfere when launching.The summit in adjacent triangle sail face and one end of support bar are fixed together, after receiving according to support bar when being in receiving state, the position on summit adjusts sail vertex of surface position, transmitting is entered the orbit when back support rod diagonally slowly stretches out and is driven solar sail face to launch simultaneously, it is achieved the expansion in-orbit of solar sail.
It is illustrated in figure 1 the quadrate support rod-type solar sail sail face of sail face dividing.The method for folding being suitable to piecemeal quadrate support rod-type solar sail sail face of the present invention, comprises the steps:
(1) square solar sail sail face is divided into four pieces of isosceles right triangle sail faces along two diagonals；
(2) every piece of triangle sail face folds respectively in such a way:
If the right-angled apices in every piece of triangle sail face is A, another two summit respectively B and C, take the midpoint D of hypotenuse BC, by sail face along AD doubling, AD is divided into n section, if n-1 node respectively P1、P2、……、Pn-1, in triangle ADC, the parallel lines of right-angle side AC, respectively P is made through each node1N1、P2N2、……、Pn-1Nn-1, in triangle ADB, the parallel lines of right-angle side AB, respectively P is made through each node1M1、P2M2、……、Pn-1Mn-1；Then by DP1N1And DP1M1From AP1N1C and AP1M1Traverse between B, and along P1N1And P1M1Fold；By DP2N2And DP2M2From P1N1N2P2And P1M1M2P2Between traverse, and along P2N2And P2M2Fold；Alternate directions folds according to this, until by DPn-1Nn-1And DPn-1Mn-1From Pn-2Nn-2Nn-1Pn-1And Pn-2Mn-2Mn-1Pn-1Between traverse, and along Pn-1Mn-1And Pn-1Nn-1Fold, thus completing the folding of one piece of triangle sail face；
Fig. 2 is one piece of sail face after piecemeal, i.e. the 1/4 sail face in monoblock sail face shown in (a).If the right-angled apices in this block solar sail sail face is A, another two summit respectively B and C, take the midpoint D of hypotenuse BC, connect AD, first by one piece of sail face along AD section doubling, some C is in the surface of a B, according to the restriction h of height after the folding storage of sail face, determine that AD section needs the hop count n of decile, make n take and meet inequalitySmallest positive integral value.For n=4, folding process is described in detail, AD is on average divided into 4 sections, divide rear three nodes and respectively put P1、P2、P3；At a P1The parallel lines P of right-angle side AC (AB) is at place1N1(P1M1), in Fig. 2 shown in (b), then by DP1N1And DP1M1From AP1N1C and AP1M1Traverse between B, and along P1N1And P1M1Carry out folding (see from Fig. 2 be between AC and AB traverse, to right folding), after folding in Fig. 2 shown in (c)；Then by DP2N2And DP2M2From P1N1N2P2And P1M1M2P2Between traverse, and along P2N2And P2M2Carry out folding and (see from Fig. 2 and be from P1N1And P1M1Between traverse, to left folding), after folding in Fig. 2 shown in (d)；Then by DP3N3And DP3M3From P2N2N3P3And P2M2M3P3Between traverse, and along P3M3And P3N3Carry out folding and (see from Fig. 2 and be from P2M2And P2N2Between traverse, to right folding), after folding in Fig. 2 shown in (e)；Thus completing the folding of one piece of sail face；
(3) the right-angled apices A in every piece of triangle sail face is fixed on a sail roll axle, by the sail roll that folds on sail roll axle, latter two hypotenuse summit B and the C rolled up is exposed at sail roll axle outer end, and four pieces of triangle sail faces are rolled up respectively on four sail roll axles；
The summit A of one piece of sail face right angle after folding is fixed on a sail roll axle, (in Fig. 3, (a) is that the summit of one piece of sail face right angle is fixed on the front view on a sail roll axle as shown in Figure 3, b () is right view, c () is upward view), by the sail roll that folds on sail roll axle, being one piece of sail face half volume schematic diagram on sail roll axle as shown in Figure 4, what be finally exposed at outer end is two hypotenuse summits except right-angled apices, the triangle sail face；The one piece of sail face spooled completely is (in Fig. 5, (a) is the front view in the one piece of sail face spooled, and (b) is left view) as shown in Figure 5.
(4) 3 is the base plate placing solar sail support bar with the packaging structure in sail face, center column 1 is fixed on base plate 3, sail roll axle 2 and support bar spool 4 are placed around center column 1 interval, sail roll axle 2 one end is fixed on center column 1, the other end is fixed on base plate 3, support bar spool 4 is fixed on center column 1, and the external part of support bar connects two hypotenuse summits that on neighbouring reels, two triangle sail faces are adjacent, completes the storage that sail face is overall；
Four sail roll axles are symmetrically placed around the center (center column 1) of aircraft centrosome, leave certain intervals between four sail roll axles, it is prevented that because hypotelorism causes that sail face interferes when launching.In Fig. 6, (a) show the schematic three dimensional views of the connected mode of sail roll axle and support bar spool, and (b) is top view.Fig. 6 only simply draws support bar spool and support bar external part direction, is not related to the expansion auxiliary body of support bar, in order to relative position and the connected mode of sail face and support bar placement to be described.In Fig. 6 shown in (a), during solar sail aircraft sail surface launching, sail body and supporting construction need compact wiring up, and namely need one to support packaging structure, and 3 in figure are the base plate of packaging structure.Center column 1 is fixed on base plate 3, sail roll axle 2 is perpendicular to base plate 3, and it is fixed on center column 1 by its central shaft one end, the other end is fixed on base plate 3, the central shaft of support bar spool 4 is fixed on center column 1, sail roll axle and support bar spool are placed around center column interval, in placement location such as Fig. 6 shown in (b), the external part of support bar spool 4 connects two hypotenuse summits that on adjacent sail roll axle, two triangle sail faces are adjacent, namely the summit adjacent with support bar spool that each sail roll axle is exposed is connected with support bar external part respectively, complete the storage that sail face is overall.
(5) when sail face is launched, diagonal when four support bar spools launch along sail face progressively stretches, and drives sail roll axle 2 to rotate, it is achieved the progressively expansion in sail face.
Fold later sail face according to this method and launch the detailed description of the invention of process: state when sail face entirety has been received as shown in Figure 6, when diagonal when four support bars launch along sail face progressively stretches, drives sail roll axle to rotate, and sail face is progressively launched；State during half that to be sail face shown in Fig. 7 launch under support bar drives；Continuing to stretch out with back support rod, until support bar is fully extended, and sail face now also achieves fully deployed, completes the expansion that solar sail face is overall.
The non-detailed description of the present invention is known to the skilled person technology.
Claims (2)
1. the method for folding being suitable to piecemeal quadrate support rod-type solar sail sail face, it is characterised in that comprise the steps:
(1) square solar sail sail face is divided into four pieces of isosceles right triangle sail faces along two diagonals；
(2) every piece of triangle sail face folds respectively in such a way:
If the right-angled apices in every piece of triangle sail face is A, another two summit respectively B and C, take the midpoint D of hypotenuse BC, by sail face along AD doubling, AD is divided into n section, if n-1 node respectively P1、P2、……、Pn-1, in triangle ADC, the parallel lines of right-angle side AC, respectively P is made through each node1N1、P2N2、……、Pn-1Nn-1, in triangle ADB, the parallel lines of right-angle side AB, respectively P is made through each node1M1、P2M2、……、Pn-1Mn-1；Then by DP1N1And DP1M1From AP1N1C and AP1M1Traverse between B, and along P1N1And P1M1Fold；By DP2N2And DP2M2From P1N1N2P2And P1M1M2P2Between traverse, and along P2N2And P2M2Fold；Alternate directions folds according to this, until by DPn-1Nn-1And DPn-1Mn-1From Pn-2Nn-2Nn-1Pn-1And Pn-2Mn-2Mn-1Pn-1Between traverse, and along Pn-1Mn-1And Pn-1Nn-1Fold, thus completing the folding of one piece of triangle sail face；
(3) the right-angled apices A in every piece of triangle sail face is fixed on a sail roll axle, the sail roll folded is on sail roll axle, latter two hypotenuse summit B and the C rolled up is exposed at sail roll axle outer end, and four pieces of triangle sail faces are rolled up respectively on four sail roll axles；
(4) center column (1) is fixed on the base plate (3) of the packaging structure placing solar sail support bar and sail face, sail roll axle (2) and support bar spool (4) are placed around center column (1) interval, sail roll axle (2) one end is fixed on center column (1), the other end is fixed on base plate (3), support bar spool (4) is fixed on center column (1), support bar external part connects two hypotenuse summits that on adjacent sail roll axle, two triangle sail faces are adjacent, completes the storage that sail face is overall；
(5) when sail face is launched, diagonal when four support bar spools launch along sail face progressively stretches, and drives sail roll axle (2) to rotate, it is achieved the progressively expansion in sail face.
2. a kind of method for folding being suitable to piecemeal quadrate support rod-type solar sail sail face according to claim 1, it is characterised in that: the hop count n of described AD decile is determined by the restriction h of height after the folding storage of sail face, and n is for meeting inequalitySmallest positive integral value.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104058105B (en) * | 2014-06-24 | 2015-12-30 | 中国空间技术研究院 | One utilizes the power-actuated deep space Solar sail spacecraft of solar light pressure |
| CN104627389B (en) * | 2015-02-14 | 2016-05-11 | 哈尔滨工业大学 | A kind of controlled orderly inflating expanded self-support type solar sail structure |
| DE102017101178B4 (en) | 2017-01-23 | 2021-10-28 | Deutsches Zentrum für Luft- und Raumfahrt e.V. | A method of packaging a spacecraft membrane, spacecraft membrane package, and spacecraft membrane handling unit |
| WO2020178614A1 (en) * | 2019-03-01 | 2020-09-10 | Ecole Polytechnique Federale De Lausanne (Epfl) | Capture system adapted to capture orbital objects, in particular for deorbiting purposes |
| CN110525687B (en) * | 2019-07-12 | 2021-02-09 | 长沙天仪空间科技研究院有限公司 | Off-rail sail unfolding method and device |
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