EP3050158B1 - Segmentierte struktur insbesondere für antennenreflektoren von satelliten - Google Patents

Segmentierte struktur insbesondere für antennenreflektoren von satelliten Download PDF

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Publication number
EP3050158B1
EP3050158B1 EP14784266.0A EP14784266A EP3050158B1 EP 3050158 B1 EP3050158 B1 EP 3050158B1 EP 14784266 A EP14784266 A EP 14784266A EP 3050158 B1 EP3050158 B1 EP 3050158B1
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EP
European Patent Office
Prior art keywords
rotation
panel
main panel
internal
segmented structure
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EP14784266.0A
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English (en)
French (fr)
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EP3050158A1 (de
Inventor
Francis GRANGERAT
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ArianeGroup SAS
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ArianeGroup SAS
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
    • H01Q15/14—Reflecting surfaces; Equivalent structures
    • H01Q15/16—Reflecting surfaces; Equivalent structures curved in two dimensions, e.g. paraboloidal
    • H01Q15/161—Collapsible reflectors
    • H01Q15/162—Collapsible reflectors composed of a plurality of rigid panels
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/27—Adaptation for use in or on movable bodies
    • H01Q1/28—Adaptation for use in or on aircraft, missiles, satellites, or balloons
    • H01Q1/288—Satellite antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
    • H01Q15/14—Reflecting surfaces; Equivalent structures
    • H01Q15/16—Reflecting surfaces; Equivalent structures curved in two dimensions, e.g. paraboloidal
    • H01Q15/161—Collapsible reflectors

Definitions

  • the present invention relates to a segmented structure.
  • This segmented structure comprises at least two panels linked together and intended to be deployed in space.
  • an antenna reflector generally comprises a rigid structure (called a hull) provided with a reflecting surface and reinforcement means at the rear of this surface, which participate in maintaining the hull and in the connection with the satellite.
  • the large dimension of the hull of such a reflector poses problems of bulk when sending into space a satellite provided with such a reflector using a space launcher.
  • a segmented structure is provided, provided with several panels, in particular a three-panel structure comprising a central panel and two end panels.
  • each end panel can therefore take a storage position for transport in the space launcher and a deployed position when the satellite is in space.
  • JP 59-126305 JP 60-027203 and EP1043802 describe devices for deploying antenna reflectors.
  • each end panel can therefore take a storage position for transport in the space launcher and a deployed position when the satellite is in space.
  • the present invention relates to a segmented structure of a satellite antenna reflector, comprising at least two panels and a deployment device making it possible to achieve an efficient and advantageous deployment in space of these two panels.
  • the secondary panel of the segmented structure can be deployed efficiently and advantageously in space from the storage position to the deployed position, as specified below.
  • the external connection of the external segment to the rear face of the secondary panel is equipped with a flexible joint to ensure a degree of freedom.
  • said auxiliary rotation system comprises two motors, one of which is connected to the internal end of the internal segment of a first of said arms and is capable of subjecting it to rotation, and the other of which is connected to the internal end of the internal segment of the second of said arms and is capable of subjecting it to a rotation, these two motors being synchronized and controlled so as to generate rotations in opposite directions.
  • said single motor is a gear reducer with two inverted outputs, each output being provided with a pulley making it possible to transmit a rotation.
  • the present invention also relates to a method of deploying a segmented structure as mentioned above.
  • the segmented structure 1, illustrating the invention and shown schematically on the figure 1 in particular, is intended, more particularly although not exclusively, for a telecommunications satellite antenna reflector.
  • Such an antenna reflector generally comprises, when it is deployed in space, a rigid structure (called a shell) provided with a reflecting surface, as well as reinforcement and retention means (not shown) at the rear. of this structure, which participate in the maintenance of the hull and in the connection with the satellite.
  • this structure is of the segmented type, that is to say it is formed of several segments or panels.
  • one 3 of the secondary panels 3 and 4 is in the deployed position P2, and the other 4 of said secondary panels 3 and 4 is in the storage position P1.
  • connection to the rear face 2B of the main panel 2 is made by means of a structural element 23, preferably of planar shape, which is fixed to the rear face 2B and which serves as a support for the deployment devices 5 of the two secondary panels 3 and 4.
  • Such a deployment device 5 enables efficient and advantageous deployment of the secondary panel, with which it is associated, from the storage position P1 to the deployed position P2, as specified below.
  • the translation system 6 comprises a set 7 of two identical articulated arms 9A and 9B which are arranged symmetrically with respect to an axis XX of the segmented structure 1, in particular an axis of symmetry, as shown in FIG. figure 2 .
  • Each of said articulated arms 9A and 9B comprises an outer segment 10 and an inner segment 11 linked together by a pivot link 12, as shown in FIG. figure 3 .
  • the outer segment 10 of each of said arms 9A and 9B is linked by a pivot connection 13 to the rear face 3B of the secondary panel 3.
  • said translation system 6 further comprises an auxiliary rotation system 14, 15.
  • This auxiliary rotation system 14, 15 is linked to an internal end 11A of each of the internal segments 11 of the articulated arms 9A and 9B, and it acts directly on the internal ends 11A so as to generate a rotation at each of the two ends. internal 11A around an axis ⁇ .
  • the auxiliary rotation system 14, 15 generates rotations at the internal ends 11A of the two arms 5A and 5B in a synchronized manner and in opposite directions, so as to unfold or fold said assembly 7 of articulated arms, and this so that the assembly 7 has a rectilinear displacement along the axis XX.
  • the rotation (illustrated by an arrow E1 around the axis ⁇ on the figure 3 ) is generated by the auxiliary rotation system 14.
  • the rotations generated respectively on the two articulated arms 9A and 9B of the assembly 7 being reversed (in the direction of arrow E1 for 9B and in the opposite direction of arrow E2 for 9A, as shown for example on figure 13 ), and this in a synchronized manner, i.e. at the same speed, they generate a translation of the arm assembly 7 (and therefore of the deployment system 5), as illustrated for example by an arrow B1 on the figure 6 .
  • said auxiliary rotation system 14 comprises two motors 17 and 18 (for example of the stepping type).
  • One 17 of said motors 17 and 18 is connected to the internal end 11A of the internal segment 11 of a first arm 9B and is able to subject this internal segment 11 to a rotation.
  • the other 18 of said motors 17 and 18 is connected to the internal end 11A of the internal segment 11 of the second arm 9A and is also capable of subjecting this internal segment 11 to rotation.
  • Said motors 17 and 18, for example gear reducer servomotors are synchronized and controlled so as to generate rotations in opposite directions E1 and E2 around parallel ⁇ axes, each time via a usual transmission means 19.
  • Said first and second links 22A and 22B are driven by motor 20 so as to transmit rotations in opposite directions at the same speed.
  • the rotation system 8 (capable of generating the rotation of the translation system 6 around the main axis of rotation ⁇ ) can also be produced in different ways.
  • it is connected to the rear face 2A of the main panel 2 by means of the support element 23 of substantially planar shape.
  • said rotation system 8 comprises two coaxial motors 25 and 26 (along the axis ⁇ ) which act directly on the axis of rotation of each arm 9A and 9B. These motors 25 and 26 are synchronized and generate a rotation in the same direction, as illustrated by an arrow F1 on the figure 3 .
  • said rotation system 8 comprises a transmission shaft 27 which is linked to the ends of the arms 9A and 9B, so as to mechanically link these two arms 9A and 9B together.
  • This transmission shaft 27 is driven by a suitable motor 28, for example a screw jack, which is fixed to the support element 23. The translation of the jack causes the rotation of the transmission shaft 27.
  • the external connection of the external arm 10 to the rear face 3B of the secondary panel 3 is flexible, for example using an appropriate joint 29, so as to create a certain flexibility between the secondary panel 2 and the arm assembly 7, in particular to facilitate final positioning, shown in figure 8 and specified below.
  • the deployment device 5 also comprises means not shown (for example a central unit) for controlling the rotation systems 8, 14, 15.
  • segmented structure 1 can comprise usual means of maintaining (not shown) of the various panels 2, 3 and 4 in the storage position P1. These holding means are released before deployment, so that each deployment device 5 can implement the deployment specified below.
  • the same deployment method is implemented for the secondary panel 4 so as to finally obtain the fully deployed position of the segmented structure 1 of the figure 9 .
  • this rotation generates a translation in the direction shown by the arrow B2 on the figure 8 , allowing the secondary panel 3 to be brought into contact with the main panel 2.
  • the device 5 can also bring the segmented structure from the deployed position P2 to the stored position P1, if this turns out to be necessary, for example for a validation operation, by performing the aforementioned operations in the reverse order (d , c, b, a), with each operation (rotation, translation) carried out in reverse.
  • segmented structure 1 may include means, not shown, to allow precise final positioning between a secondary panel 3, 4 and the main panel 2 in the situation of figures 8 and 9 , as well as means for locking the panels in the fully deployed position of the segmented structure 1 of the figure 9 .

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Astronomy & Astrophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Remote Sensing (AREA)
  • Electromagnetism (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Aerials With Secondary Devices (AREA)
  • Details Of Aerials (AREA)

Claims (14)

  1. Segmentierte Struktur für Antennenreflektoren von Satelliten, wobei die segmentierte Struktur (1) enthält:
    - zumindest zwei Paneele (2, 3, 4), wobei ein erstes Paneel, Hauptpaneel (2) genannt, eine Vorderseite (2A) und eine Rückseite (2B) aufweist, und ein zweites Paneel, Nebenpaneel (3, 4) genannt, ebenfalls eine Vorderseite (3A, 4A) und eine Rückseite (3B, 4B) aufweist; und
    - zumindest eine Entfaltungsvorrichtung (5), die jeweils mit der Rückseite des Haupt- bzw. Nebenpaneels verbunden und dazu geeignet ist, das Nebenpaneel (3, 4) in die eine oder andere der beiden folgenden Positionen relativ zum Hauptpaneel (2) zu bringen:
    eine Verstauposition (P1), in der das Nebenpaneel (3, 4) zumindest teilweise dem Hauptpaneel (2) auf dessen Rückseite (2B) überlagert ist, wobei die Vorderseite (3A, 4A) des Nebenpaneels (3, 4) in die gleiche Richtung wie die Vorderseite (2A) des Hauptpaneels (2) weist; und
    eine Entfaltungsposition (P2), in der das Nebenpaneel (3, 4) neben dem Hauptpaneel (2) an diesem anliegend positioniert ist, so dass eine kontinuierliche Anordnung zumindest auf ihren Vorderseiten entsteht,
    wobei die Entfaltungsvorrichtung (5) enthält:
    ein Translationssystem (6), das dazu geeignet ist, eine Translationsbewegung des Nebenpaneels (3, 4) in Bezug auf das Hauptpaneel (2) zu erzeugen, und das an einem Ende (6A), äußeres Ende genannt, mit dem Nebenpaneel (3, 4) verbunden ist; und
    ein Rotationssystem (8), das einerseits mit einem Ende (6B) des Translationssystems (6), inneres Ende genannt, und andererseits mit der Rückseite (2B) des Hauptpaneels (2) verbunden ist,
    dadurch gekennzeichnet, dass:
    - das Rotationssystem (8) dazu geeignet ist, eine Rotation des Translationssystems (6) und des mit dem Translationssystem (6) verbundenen Nebenpaneels (3, 4) in Bezug auf das Hauptpaneel (2) um eine Achse (α) zu erzeugen, die sich im Bereich der Rückseite des Hauptpaneels befindet; und
    - das Translationssystem (6) enthält:
    eine Anordnung (7) aus zwei identischen Gelenkarmen (9A, 9B), wobei jeder der Gelenkarme (9A, 9B) ein äußeres Segment (10) und ein inneres Segment (11) aufweist, die durch eine Schwenkverbindung (12) miteinander verbunden sind, wobei das äußere Segment (10) jedes der Arme (9A, 9B) durch eine Schwenkverbindung (13) mit der Rückseite (3B) des Nebenpaneels (3) verbunden ist, und in der Entfaltungsposition der segmentierten Struktur die äußeren Segmente weiter vom Zentrum dieser Struktur entfernt liegen als die inneren Segmente; und
    - ein Hilfsrotationssystem (14, 15), das mit einem inneren Ende jedes der inneren Segmente (11) der beiden Gelenkarme (9A, 9B) verbunden und dazu geeignet ist, an jedem der inneren Enden synchron und in entgegengesetzten Richtungen eine Rotation zu erzeugen, um die Anordnung (7) von Gelenkarmen zu entfalten oder zusammenzufalten.
  2. Segmentierte Struktur nach Anspruch 1,
    dadurch gekennzeichnet, dass
    bei jedem der Gelenkarme (9A, 9B) die äußere Verbindung des äußeren Segments (10) mit der Rückseite (3B) des Nebenpaneels (3) mit einem flexiblen Gelenk (29) ausgestattet ist.
  3. Segmentierte Struktur nach einem der Ansprüche 1 und 2,
    dadurch gekennzeichnet, dass
    das Hilfsrotationssystem (14) zwei Motoren (17, 18) umfasst, von denen der eine (17) mit dem inneren Ende des inneren Segments (11) eines ersten (9B) der Arme verbunden und dazu geeignet ist, es einer Rotation zu unterwerfen, und von denen der andere (18) mit dem inneren Ende des inneren Segments (11) des zweiten (9A) der Arme verbunden und dazu geeignet ist, es einer Rotation zu unterwerfen, wobei die Motoren (17, 18) so synchronisiert und angesteuert werden, dass sie Rotationen in entgegengesetzten Richtungen erzeugen.
  4. Segmentierte Struktur nach einem der Ansprüche 1 und 2,
    dadurch gekennzeichnet, dass
    das Hilfsrotationssystem (15) einen einzigen Motor (20) umfasst, der
    - einerseits durch eine erste Rotationsübertragungsverbindung (22A) mit dem inneren Ende des inneren Segments (11) eines ersten (9B) der Arme verbunden ist, die dazu geeignet ist, es einer Rotation zu unterwerfen; und
    - andererseits durch eine zweite Rotationsübertragungsverbindung (22B) mit dem inneren Ende des inneren Segments (11) des zweiten (9A) der Arme verbunden ist, die dazu geeignet ist, es einer Rotation zu unterwerfen,
    wobei die erste und die zweite Rotationsübertragungsverbindung (22A, 22B) von dem einzigen Motor (20) angetrieben werden, um Rotationen in entgegengesetzten Richtungen mit der gleichen Drehzahl zu übertragen.
  5. Segmentierte Struktur nach Anspruch 4,
    dadurch gekennzeichnet, dass
    der Motor (20) ein Getriebemotor mit zwei entgegengesetzten Abtrieben ist, wobei jeder Abtrieb mit einer Riemenscheibe (21A, 21B) zur Übertragung einer Rotation versehen ist.
  6. Segmentierte Struktur nach einem der Ansprüche 1 bis 5,
    dadurch gekennzeichnet, dass
    das Rotationssystem (8) zwei koaxial verlaufende Motoren (25, 26) umfasst, die so synchronisiert und angesteuert werden, dass sie Rotationen in derselben Richtung erzeugen.
  7. Segmentierte Struktur nach einem der Ansprüche 1 bis 5,
    dadurch gekennzeichnet, dass
    das Rotationssystem (8) eine Übertragungswelle (27), die die inneren Enden von zwei Armen (9A, 9B) des Translationssystems (6) miteinander verbindet, und einen Motor (28) enthält, um diese Übertragungswelle (27) rotierend anzutreiben.
  8. Segmentierte Struktur nach einem der vorhergehenden Ansprüche dadurch gekennzeichnet, dass sie enthält:
    - ein zentrales Hauptpaneel (2);
    - zwei Nebenpaneele (3, 4), die in der Entfaltungsposition auf jeder Seite des zentralen Hauptpaneels (2) so angeordnet sind, dass sie eine parabolische Form aufweisen; und
    - zwei Entfaltungsvorrichtungen (5), die den jeweiligen Nebenpaneelen (3, 4) zugeordnet sind.
  9. Antennenreflektor für Satelliten,
    dadurch gekennzeichnet, dass
    er eine segmentierte Struktur (1) nach einem der Ansprüche 1 bis 8 enthält.
  10. Satellit,
    dadurch gekennzeichnet, dass
    er zumindest eine segmentierte Struktur (1) nach einem der Ansprüche 1 bis 8 enthält.
  11. Verfahren zum Entfalten einer segmentierten Struktur (1) nach einem der Ansprüche 1 bis 8,
    dadurch gekennzeichnet, dass
    es aufeinanderfolgende Schritte umfasst, die während des Entfaltens aus der Verstauposition (P1) in die Entfaltungsposition (P2) umfassen:
    a) Ausführen einer Rotation mittels des Rotationssystems (8) aus der Verstauposition in einer ersten Rotationsrichtung (A1), um das an seinem äußeren Ende mit dem Nebenpaneel (3) versehene Translationssystem (6) von der Rückseite (2B) des Hauptpaneels (2) weg zu bewegen;
    b) Ausführen einer Translation mittels des Translationssystems (6) in einer ersten Translationsrichtung (B1), um letzteres in eine auseinandergefaltete Position zu bringen;
    c) Ausführen einer Rotation mittels des Rotationssystems (8) in einer Richtung (A2), die der ersten Rotationsrichtung (A1) entgegengesetzt ist, um das Neben- und das Hauptpaneel im Wesentlichen in dieselbe Ebene zu bringen; und
    d) Ausführen einer Translation mittels des Translationssystems (6) in einer Richtung (B2), die der ersten Translationsrichtung (B1) entgegengesetzt ist, um das Nebenpaneel (3) in Kontakt mit dem Hauptpaneel (2) in eine Position zu bringen, die die Entfaltungsposition (P2) darstellt.
  12. Entfaltungsverfahren nach Anspruch 11,
    dadurch gekennzeichnet, dass
    die auseinandergefaltete Position des Translationssystems (6) der Position der maximalen Erstreckung des Translationssystems (6) entspricht.
  13. Entfaltungsverfahren nach Anspruch 12,
    dadurch gekennzeichnet, dass
    in Schritt d) das Hilfsrotationssystem (14, 15) des Translationssystems (6) eine Rotation in der gleichen Richtung wie in Schritt b) ausführt.
  14. Entfaltungsverfahren nach einem der Ansprüche 11 und 12,
    dadurch gekennzeichnet, dass
    in Schritt d) das Hilfsrotationssystem (14, 15) des Translationssystems (6) eine Rotation in der entgegengesetzten Richtung wie in Schritt b) ausführt.
EP14784266.0A 2013-09-26 2014-09-11 Segmentierte struktur insbesondere für antennenreflektoren von satelliten Active EP3050158B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1302234A FR3011133B1 (fr) 2013-09-26 2013-09-26 Structure segmentee, en particulier pour reflectur d'antenne de satellite
PCT/FR2014/000206 WO2015044535A1 (fr) 2013-09-26 2014-09-11 Structure segmentée, en particulier pour réflecteur d'antenne de satellite

Publications (2)

Publication Number Publication Date
EP3050158A1 EP3050158A1 (de) 2016-08-03
EP3050158B1 true EP3050158B1 (de) 2021-03-31

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EP14784266.0A Active EP3050158B1 (de) 2013-09-26 2014-09-11 Segmentierte struktur insbesondere für antennenreflektoren von satelliten

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US (1) US10135151B2 (de)
EP (1) EP3050158B1 (de)
CA (1) CA2923480A1 (de)
FR (1) FR3011133B1 (de)
WO (1) WO2015044535A1 (de)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10957986B2 (en) * 2017-08-04 2021-03-23 Space Systems/Loral, Llc Reconfigurable spacecraft with a hold-down assembly for a rigid reflector
FR3098105B1 (fr) 2019-07-02 2023-05-19 Safran Coating Pansement avec distribution des fluides améliorée.

Family Cites Families (5)

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Publication number Priority date Publication date Assignee Title
JPS59126305A (ja) * 1983-01-10 1984-07-20 Nippon Telegr & Teleph Corp <Ntt> 展開形アンテナ反射鏡
JPS6027203A (ja) * 1983-07-26 1985-02-12 Nippon Telegr & Teleph Corp <Ntt> アンテナ展開装置
JP4060955B2 (ja) * 1998-07-30 2008-03-12 東洋ガラス株式会社 製品搬送装置
US6191757B1 (en) * 1999-04-08 2001-02-20 Hughes Electronics Corporation System for compact stowage of segmented dish reflectors
JP4791656B2 (ja) * 2001-07-03 2011-10-12 オーチス エレベータ カンパニー 階高可変式ダブルデッキエレベータ

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Also Published As

Publication number Publication date
US20160226135A1 (en) 2016-08-04
FR3011133A1 (fr) 2015-03-27
US10135151B2 (en) 2018-11-20
CA2923480A1 (fr) 2015-04-02
EP3050158A1 (de) 2016-08-03
FR3011133B1 (fr) 2018-03-02
WO2015044535A1 (fr) 2015-04-02

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