EP0070428A2 - Dispositif de liaison et de guidage pour les éléments pliables d'un réflecteur d'antenne pliable - Google Patents

Dispositif de liaison et de guidage pour les éléments pliables d'un réflecteur d'antenne pliable Download PDF

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Publication number
EP0070428A2
EP0070428A2 EP82105812A EP82105812A EP0070428A2 EP 0070428 A2 EP0070428 A2 EP 0070428A2 EP 82105812 A EP82105812 A EP 82105812A EP 82105812 A EP82105812 A EP 82105812A EP 0070428 A2 EP0070428 A2 EP 0070428A2
Authority
EP
European Patent Office
Prior art keywords
segments
joints
folding
central panel
folding segments
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP82105812A
Other languages
German (de)
English (en)
Other versions
EP0070428A3 (en
EP0070428B1 (fr
Inventor
Manfred Westphal
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dornier System GmbH
Original Assignee
Dornier System GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dornier System GmbH filed Critical Dornier System GmbH
Priority to AT82105812T priority Critical patent/ATE31130T1/de
Publication of EP0070428A2 publication Critical patent/EP0070428A2/fr
Publication of EP0070428A3 publication Critical patent/EP0070428A3/de
Application granted granted Critical
Publication of EP0070428B1 publication Critical patent/EP0070428B1/fr
Expired legal-status Critical Current

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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 [2D], e.g. paraboloidal
    • H01Q15/161—Collapsible reflectors

Definitions

  • the invention relates to a device for connecting and guiding the individual folding elements of a foldable rigid antenna reflector, consisting of a central panel and folding segments arranged thereon via joints.
  • the disadvantages here are, on the one hand, that a relatively large number of foldable segments and associated joints are required in order to obtain a sufficiently large antenna diameter, and, on the other hand, that the individual segments are only attached or held at the foot ends of the central panel.
  • This one-sided holder does not guarantee an exact end position of the individual segments after they have unfolded, since the individual segments in the holders on the central panel can change relative to one another due to different types of states.
  • There is also a risk that the segments interfere or interfere with each other during the unfolding process for example, due to friction of the segment sheets, summation of the bearing tolerances, etc.) and that this causes the segment sheets to deform or block the unfolding.
  • the advantage of the invention is that the individual segments are connected to one another by at least one connecting rod articulated at their outer ends.
  • the folding segments are guided in a defined manner in the intermediate positions during unfolding and fixed in their end position or end position.
  • the fixation can be carried out by the connecting rod (s) itself or by one or more additional means known per se (e.g. stops and notches).
  • the position and length of the connecting rod (s) and the position of their articulations or connection points at the ends of the folding segments is defined by the start configuration and by the end position of the antenna.
  • the connecting rods bring about an additional rotation of the folding segments about an axis of rotation, which is provided by a simple joint with an axis standing obliquely in space and assigned to each folding segment and arranged on the central panel, or by a double joint.
  • the folding segments and the connecting rods are stretched and fixed to one another.
  • the smallest possible stowage volume required for the initial or start configuration is achieved by special shapes of the joints arranged on the central panel, which pivot the folding segments far inwards when stowed, so that the stowage diameter almost corresponds to the diameter of the central panel.
  • the antenna reflector 1 shown in FIG. 1a is arranged on a holder 2, which is attached to a support (e.g. shuttle), which is tiltable about an axis a, and is attached.
  • a support e.g. shuttle
  • a circular central panel 3 is rigidly attached, on the circumference of which uniformly distributed joints 4 are arranged, which connect individual folding segments 5 at their foot ends.
  • the joints 4 can be single-jointed with oblique axes 10 or double-jointed 11, 12 (FIG. 2a).
  • the folding segments 5 have joints 6 at their corners, to which connecting rods 7 are articulated, which engage in joints 8 arranged at the outer end of each folding segment 5 and connect the folding segments 5 to one another.
  • the individual folding segments 5 are perpendicular to the central panel 3.
  • FIG. 2a, b shows the antenna reflector 1 with partially unfolded folding segments 5 from an oblique view and in the view from above.
  • the folding segments 5 unfold e.g. by a centrally arranged spring drive, not shown, or by means of one or more actuators (likewise not shown in detail). It is assumed that not all folding segments 5 are driven individually by the guiding action of the outer connecting rods 7.
  • the joints 4 arranged on the central panel 3 ensure a defined and simultaneous pivoting and turning of the folding segments 5.
  • the turning is forced by the connecting rods 7 articulated at the outer end of the folding segments 5, the position of which is such that that Joint 8 in the middle of one folding segment 5 connects the joint 6 at the corner of the next folding segment 5.
  • a connecting chain is thereby achieved which, in combination with the joints 4, guides and connects the individual folding segments 5 on the central panel 3 in a defined manner. This avoids complicated interlocks.
  • the positions of the joints 6 and 8 are variable.
  • the folding segments 5 When unfolding, the folding segments 5 rotate about the axes 11, 12, which are perpendicular to one another and are provided by a double joint 4, these being positioned such that, while rotating at the same time (see arrow direction) of the folding segments 5 about the axis 11 (longitudinal axis) a radial unfolding about the axis 12 is possible.
  • the rotation of the folding segments 5 is forced by the outer connecting rods 7.
  • the end position of the unfolded folding segments 5 is reached when the connecting rods 7 with the folding segments 5 form the extended position shown in FIG. 3 and are locked together in this position.
  • adjustable stops 9 are provided on the joints 4 which connect the individual folding segments 5 to the central panel 3. This ensures an exact position of the folding segments 5 in relation to the central panel 3. The position in the circumferential direction and the correct angular position of the individual folding segments 5 is achieved by the connecting rods 7, which fix them in the end position.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Aerials With Secondary Devices (AREA)
  • Details Of Aerials (AREA)
EP82105812A 1981-07-22 1982-06-30 Dispositif de liaison et de guidage pour les éléments pliables d'un réflecteur d'antenne pliable Expired EP0070428B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82105812T ATE31130T1 (de) 1981-07-22 1982-06-30 Vorrichtung zur verbindung und fuehrung der einzelnen faltelemente eines faltbaren starren antennenreflektors.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3128926A DE3128926C2 (de) 1981-07-22 1981-07-22 Faltbarer konkav gekrümmter Antennenreflektor aus starren Segmenten
DE3128926 1981-07-22

Publications (3)

Publication Number Publication Date
EP0070428A2 true EP0070428A2 (fr) 1983-01-26
EP0070428A3 EP0070428A3 (en) 1984-03-28
EP0070428B1 EP0070428B1 (fr) 1987-11-25

Family

ID=6137461

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82105812A Expired EP0070428B1 (fr) 1981-07-22 1982-06-30 Dispositif de liaison et de guidage pour les éléments pliables d'un réflecteur d'antenne pliable

Country Status (7)

Country Link
US (1) US4511901A (fr)
EP (1) EP0070428B1 (fr)
JP (1) JPS5825701A (fr)
AT (1) ATE31130T1 (fr)
CA (1) CA1196719A (fr)
DE (1) DE3128926C2 (fr)
ES (1) ES280866Y (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0252247A1 (fr) * 1986-06-27 1988-01-13 Dornier Gmbh Réflecteur antenne pliable à une surface concave
CN104953229A (zh) * 2014-12-25 2015-09-30 黄天生 一种伸缩式卫星接收鼎

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5104211A (en) * 1987-04-09 1992-04-14 Harris Corp. Splined radial panel solar concentrator
US4841305A (en) * 1988-02-01 1989-06-20 Dalsat, Inc. Method of sectioning an antennae reflector
JPH04306319A (ja) * 1991-01-11 1992-10-29 Misawa Homes Co Ltd 基礎構造
US5255006A (en) * 1991-08-29 1993-10-19 Space Systems/Loral, Inc. Collapsible apparatus for forming a dish shaped surface
US5257034A (en) * 1992-07-29 1993-10-26 Space Systems/Loral, Inc. Collapsible apparatus for forming a paraboloid surface
DE19818240C2 (de) * 1998-04-23 2000-06-29 Daimler Chrysler Ag Reflektor und Reflektorelement für Antennen zum Einsatz im Weltraum, sowie Verfahren zum Entfalten eines Reflektors
EP1386838B1 (fr) * 2002-07-31 2006-05-17 EADS Astrium GmbH Réflecteur d'antenne déployable
US7557995B1 (en) 2006-07-11 2009-07-07 Itt Manufacturing Enterprises, Inc. Deployable telescope shade
FR2974787B1 (fr) * 2011-05-05 2014-11-28 Thales Sa Dispositif de protection d'un instrument optique multifaisceaux
US9331394B2 (en) 2011-09-21 2016-05-03 Harris Corporation Reflector systems having stowable rigid panels
US10811759B2 (en) 2018-11-13 2020-10-20 Eagle Technology, Llc Mesh antenna reflector with deployable perimeter
US11139549B2 (en) 2019-01-16 2021-10-05 Eagle Technology, Llc Compact storable extendible member reflector
US10797400B1 (en) 2019-03-14 2020-10-06 Eagle Technology, Llc High compaction ratio reflector antenna with offset optics

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2806134A (en) * 1949-08-27 1957-09-10 Tarcici Adnan Collapsible reflectors
DE840231C (de) * 1949-09-17 1952-05-29 Leitz Ernst Gmbh Zusammenlegbarer Reflektor, insbesondere fuer photographische Beleuchtungszwecke
US3064534A (en) * 1960-04-13 1962-11-20 United Aircraft Corp Reflector for space vehicle
US3174397A (en) * 1962-09-10 1965-03-23 Rayan Aeronautical Co Deployment mechanism for satellite mirror structure
US3618111A (en) * 1967-04-28 1971-11-02 Gen Dynamics Corp Expandable truss paraboloidal antenna
US3699576A (en) * 1970-07-07 1972-10-17 Fairchild Industries Collapsible reflector
US3715760A (en) * 1971-04-07 1973-02-06 Trw Inc Rigid collapsible dish structure
US4030102A (en) * 1975-10-23 1977-06-14 Grumman Aerospace Corporation Deployable reflector structure

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0252247A1 (fr) * 1986-06-27 1988-01-13 Dornier Gmbh Réflecteur antenne pliable à une surface concave
CN104953229A (zh) * 2014-12-25 2015-09-30 黄天生 一种伸缩式卫星接收鼎
CN104953229B (zh) * 2014-12-25 2018-06-08 黄天生 一种伸缩式卫星接收鼎

Also Published As

Publication number Publication date
ES280866Y (es) 1986-04-01
EP0070428A3 (en) 1984-03-28
JPH0161242B2 (fr) 1989-12-27
ES280866U (es) 1985-06-16
US4511901A (en) 1985-04-16
DE3128926A1 (de) 1983-02-10
DE3128926C2 (de) 1985-05-02
ATE31130T1 (de) 1987-12-15
JPS5825701A (ja) 1983-02-16
EP0070428B1 (fr) 1987-11-25
CA1196719A (fr) 1985-11-12

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