EP2267837A1 - Zwei stockiger, integrierter Mast mit einem einer abnehmbaren Öffnungsplatte aufweisenden Radom - Google Patents

Zwei stockiger, integrierter Mast mit einem einer abnehmbaren Öffnungsplatte aufweisenden Radom Download PDF

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Publication number
EP2267837A1
EP2267837A1 EP10305663A EP10305663A EP2267837A1 EP 2267837 A1 EP2267837 A1 EP 2267837A1 EP 10305663 A EP10305663 A EP 10305663A EP 10305663 A EP10305663 A EP 10305663A EP 2267837 A1 EP2267837 A1 EP 2267837A1
Authority
EP
European Patent Office
Prior art keywords
radome
panel
fixed part
junction
mast according
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.)
Withdrawn
Application number
EP10305663A
Other languages
English (en)
French (fr)
Inventor
Erwan Rochefort
Xavier Caillaud
Gérard Collignon
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.)
Constructions Mecaniques de Normandie
Ineo Defense SAS
Original Assignee
Constructions Mecaniques de Normandie
Ineo Defense SAS
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 Constructions Mecaniques de Normandie, Ineo Defense SAS filed Critical Constructions Mecaniques de Normandie
Publication of EP2267837A1 publication Critical patent/EP2267837A1/de
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/42—Housings not intimately mechanically associated with radiating elements, e.g. radome
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/1242—Rigid masts specially adapted for supporting an aerial
    • 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
    • H01Q1/34—Adaptation for use in or on ships, submarines, buoys or torpedoes

Definitions

  • the present invention relates to a two-stage integrated mast having a removable panel radome and the associated radome.
  • the invention is in particular to facilitate disassembly of the mast to ensure its maintenance.
  • the invention finds a particularly advantageous, but not exclusive, application in the field of integrated masts used on warships. However, such a mast could also be used on civilian ships.
  • Integrated warship masts described in the document are known FR-2871579 with a lower part formed by a radome inside which is positioned a heavy radar to manage the threats of enemy attacks.
  • This integrated mast also has an upper portion installed above the radome including electronic equipment such as a navigation antenna, radio communication equipment, and navigation lights. These electronic devices are connected to control units positioned in a technical room located under the radome. The connections between the electronic equipment and the control units are provided by cables positioned inside chutes extending along the height of the radome.
  • the invention makes it easier to maintain such a mast by proposing the use of a radome provided with at least one removable panel formed in a part of the lateral surface of the radome.
  • the structure of the radome according to the invention therefore makes it easy to use to envisage maintenance operations at sea.
  • the radome having a substantially frustoconical shape
  • the removable panel is delimited by the two generatrices of the truncated cone.
  • the removable panel extends over the entire height of the radome that separates the lower interface of the upper interface.
  • it further comprises at least one chute capable of receiving cables providing connections between the electronic equipment of the upper stage and control units positioned under the lower part which extends along a generatrix of the surface. lateral, at least one junction between the removable panel and the fixed portion of the radome being positioned behind the chute so as to be masked by said chute.
  • the width of the chute is at least as large as the width of the junction between the panel and the fixed part of the radome.
  • the panel and the fixed part of the radome are positioned one against the other following the extension of the wall of the radome and are secured together to the using clamping means.
  • the panel and the fixed part of the radome comprise openings inside which are introduced screws screwed inside threaded holes formed in the part of the chute pressed against the wall of the radome, so that the panel and the fixed part of the radome are sandwiched between the head of the screws and the chute at the point of the junction.
  • screws are inserted inside openings in the panel and the fixed part of the radome, and smooth through holes formed in the chute, nuts performing the clamping, so that the panel and the part fixed radome are sandwiched between the head of the screws and the nuts at the point of the junction.
  • the nuts are crimped into the wall of the panel or the fixed part of the radome.
  • the panel and the fixed part of the radome are positioned one against the other transversely to the wall of the radome and are secured together by means of clamping means.
  • the panel and the fixed part have openings inside which are inserted screws, nuts making the tightening on the screws, so that the panel and the fixed part of the radome are sandwiched between the head screws and nuts at the junction, the chute being secured to the junction by means of a substantially constant thickness plate positioned between the panel and the fixed part, this plate being sandwiched between the panel and the fixed part at the point of the junction.
  • the radome having an axis of symmetry, the angle formed by radii from the axis of symmetry of the radome generatrices defining the surface of the panel and which faces the fixed part of the radome is about 270 degrees; while the angle formed by the rays from the axis of symmetry of the radome to the generators and facing the removable panel is 90 degrees.
  • angles between the axis of the ship and the spokes are directed to the rear of the ship and are more or less 45 degrees.
  • the fixed portion of the radome and the removable panel are made of a multilayer material comprising metal filtering circuits, the fixed part of the radome and the removable panel being made of a monolithic material at their junction.
  • the invention further relates to a radome constituting the lower part of the integrated mast according to the invention having a lower interface, an upper interface and a lateral surface positioned between the lower interface and the upper interface, characterized in that the radome is formed by a removable panel formed in the lateral surface having a surface delimited at least partially by two generatrices of said lateral surface and a fixed part to which is fixed the removable panel, the removable panel having sufficient dimensions to allow the introduction of the radar antenna inside the radome and its extraction by the surface defined by the panel.
  • Figure 1 a side view of an integrated mast according to the invention installed on a warship
  • Figures 2 and 3 truncated views in three dimensions of an integrated mast according to the invention according to two different angles of view;
  • Figure 4 a top view of the radome of the integrated mast according to the invention.
  • FIGS. 5 to 7 side views of junctions between the removable panel and the fixed part of the radome according to the invention which extend along the extension of the wall of the radome;
  • Figure 8 a side view of a junction between the removable panel and the fixed part of the radome according to the invention which extends transversely to the wall of the radome.
  • the Figure 1 shows a war ship 1 on which is installed an integrated mast 2 according to the invention.
  • This integrated mast 2 is positioned above a technical room 3.
  • the references 1.1 and 1.2 respectively correspond to the front and the rear of the ship 1.
  • This mast 2 comprises a lower portion 2.1 formed by a radome 5 inside which is positioned a radar antenna 6 rotational monitoring for visibility 360 °.
  • This radar 6 parabolic antenna or plane which works for example in S-band or C-band, is intended to manage the threats of enemy attacks.
  • This radar 6 is generally connected to power supply and control equipment located in the technical room 3.
  • the mast 2 comprises a navigation radar 7 having a 360 ° visibility (rotating antenna) and allowing the location of obstacles on the sea during navigation.
  • This radar 7 usually operating in X-band is located in the upper part of the radome 5 or in a cylindrical radome positioned at the bottom of an upper part 2.2.
  • the radome 5 is adapted in its lower part in S or C band to be transparent throughout the operating frequency band of the radar 6.
  • the radome 5 is adapted in X band in its upper part for the radar 7 when the latter is installed inside the radome. If applicable, the radome 5 is reflective for the electromagnetic waves having frequencies outside the operating bands of the radars 6 and 7.
  • the radome 5 has a lower interface 5.1, an upper interface 5.2, and a lateral surface 5.3 positioned between the lower interface 5.1 and the upper interface 5.2.
  • the interfaces 5.1 and 5.2 correspond to flanges comprising fastening means, such as fixing screws, for fixing the radome 5 on the deck of the boat 1 at the bottom and for fixing the upper part 2.2 of the mast on the top of the radome. 5.
  • the radome 5 has a frustoconical shape having for example a lower interface 5.1 having a diameter of the order of 2 to 5 meters, an upper interface having a diameter of about 1 to 3 meters and a height of 1 to 3 meters. order of 3 to 6 meters.
  • the radome 5 may have other shapes, such as a cylindrical shape or truncated sphere.
  • the upper part 2.2 fixed on the upper interface 5.2 of the radome 5 comprises known electronic and / or optronic equipment, such as electronic countermeasure equipment such as for example a 8.1 equipment type CESM (Communication Electronic Support Measure ) which makes it possible to analyze the communications, an 8.2 IRST (Infra Red Search and Track) type optronic equipment, 8.3 RESM (Radar Electronic Support Measure) type equipment which makes it possible in particular to analyze the enemy radar signals, and equipment radio-communication such as a UHF receiving module 8.4, or navigation lights, and navigation sensors such as anemometers and wind vanes (not shown).
  • the list of equipment that can be carried by the mast 2 is not limiting.
  • the upper part 2.2 has a height of about 5 to 20 meters (the upper part 2.2 is truncated on the Figures 2 and 3 ).
  • the mast 2 further comprises chutes 10 containing the cables providing the connection between the electronic equipment of the upper part 2.2 and their control devices generally located in the technical room 3. These chutes 10 may also contain any optical fibers, conducted of fluid and lightning protection descents.
  • the troughs 10 here have a section of semicircular shape; however, in a variant, these troughs 10 could have a section of elliptical or semi-elliptic, rectangular, trapezoidal, drop-shaped or other shape.
  • the cables are distributed in the troughs 10 according to their type, the cables that are not very sensitive to electromagnetic disturbances (for example the cables conveying the power signals) being for example grouped together in the same trunking, while the more sensitive cables Electromagnetic disturbances (eg data cables) are grouped together in another trough separate from the first trunking.
  • these chutes 10 are made of a metal material optionally covered by a material absorbing radar waves.
  • the radome 5 comprises at least one removable panel 13 allowing access to the inside of the radome 5.
  • This panel 13 is preferably large enough to allow the installation and the removal of the radar 6 as well as its by the surface delimited by the panel 13.
  • the removable panel 13 formed in the lateral surface 5.3 has a surface delimited by two generatrices 5.4 and 5.5 of the lateral surface 5.3 of the frustum of the radome 5 and parts 13.1 and 13.2 respectively of the lower interface 5.1 and higher 5.2.
  • the radome 5 is formed by the removable panel 13 and a fixed part 5 'to which the removable panel 13 can be fixed.
  • this panel 13 is thus in the continuity of the surface of the fixed portion 5 'of the radome. This continuity between the surfaces of the panel 13 and the fixed part 5 'optimizes the stealth of the radome. For if there were roughness between the surface of the panel 13 and the surface of the fixed part 5 ', the stealth of the radome would be greatly degraded.
  • the generators 5.4, 5.5 which delimit the panel 13 extend over the entire height of the radome 5 which separates the lower interface 5.1 and the upper interface 5.2.
  • the angle A formed by the radii 14 and 15 from the axis 17 of symmetry of the radome 5 to the generatrices 5.4, 5.5 delimiting the surface of the panel 13 and which faces the fixed part 5 'of the radome is about 270 degrees .
  • the angle B formed by the spokes 14 and 15 from the axis 17 to the generatrices 5.4 and 5.5 and facing the panel 13 is 90 degrees.
  • the fixed portion 5 'of the radome and the removable panel 13 are made of a multilayer material having a number of superimposed layers of different dielectric materials.
  • this multilayer material may for example be formed by a material 18 having a dielectric constant of 4 sandwiching a material 19 (often of foam or honeycomb type) having a dielectric constant close to 1 (for example 1.1) , the thickness of these materials being adapted according to the frequency band of the radar 6 and where appropriate 7 according to techniques known to those skilled in the art.
  • the radome wall 5 may further contain metal circuitry to provide radome filtering properties to improve radar stealth and / or EMC shielding performance.
  • the removable panel 13 and the fixed part 5 'of the radome are preferably made of a monolithic material which has more robust mechanical characteristics than the multilayer material, which makes it possible to clamp one against the other the removable panel 13 and the fixed part 5 'of the radome with the aid of clamping means 23, such as screw-nut systems.
  • the junctions 21 between the panel 13 and the fixed part 5 'of the radome are positioned behind the chutes 10 which extend, like the junctions 21, along a generatrix 5.4, 5.5 of the lateral surface 5.3 of the radome and have a width L1 at least equal to the width L2 of the junction 21.
  • the junctions 21 are masked by the chutes 10. Consequently, the physical characteristics of the junctions 21 (in particular of the monolithic material which forms them) are not important because the radar waves do not cross the junctions 21 hidden by the troughs 10.
  • the monolithic material used at the junctions 21 may for example have a dielectric constant equal to 4, any other value being conceivable.
  • FIGS. 5 to 7 show junctions 21 formed by a portion of the panel 13 and the fixed part 5 'of the radome positioned one against the other following the extension of the wall of the radome 5 and secured together by means of clamping means 23.
  • the panel 13 and the fixed part 5 'of the radome comprise openings 25 inside which are introduced screws 23.1 screwed inside tapped holes 23.2 formed in the part 10.1 of the chute 10 pressed against the wall of the radome 5, so that the panel 13 and the fixed part 5 'of the radome are sandwiched between the screw heads and the chute 10 at the junction 21.
  • the screws 23.1 are introduced inside the openings 25 as well as into smooth through holes 25 'formed in the trough 10.
  • Nuts 23.3 perform the clamping, so that the panel 13 and the fixed part 5' of the radome are sandwiched between the head of the screws 23.1 and the nuts 23.3 at the junction 21.
  • the Figure 7 shows an alternative embodiment of the Figure 6 in which the nuts 23.3 are crimped into the wall of the panel 13 or the fixed part 5 'of the radome.
  • the Figure 8 shows a junction 21 formed by a portion of the panel 13 and the fixed part 5 'of the radome positioned against one another which extend transversely to the wall of the radome 5.
  • openings 25 are arranged in the panel 13 and in the fixed part 5 'of the radome inside which are introduced screws 23.1.
  • Nuts 23.2 perform the tightening on the screws 23.1, so that the panel 13 and the fixed part 5 'of the radome are sandwiched between the head of the screws 23.1 and the nut 23.2 at the junction 21.
  • chute 10 is made integral with the junction 21 by means of a flat portion 10.2 positioned between the panel 13 and the fixed part 5 '.
  • This flat portion 10.2 takes the form of a substantially constant thickness plate sandwiched between the panel 13 and the fixed part 5 'at the junction 21.
  • This plate 10.2 thus extends in the direction of extension of the junction 21 between the panel 13 and the fixed part 5 ', that is to say in a direction parallel to a generator 5.4, 5.5.
  • junctions 21 oriented in the extension or transversely to the wall of the radome 5 will be performed depending on the mechanical properties of the junction 21 sought.
  • the openings 25 work in tearing, while in the realization of the Figure 8 , the square formed by the panel 13 and the fixed part of the radome 5 at the junction 21 undergoes bending forces.
  • the chutes 10 and the junctions 21 between the panel 13 and the fixed part 5 create, even if they are very minimal, electromagnetic disturbances.
  • the panel 13 and the chutes 10 are therefore oriented towards the rear of the ship in order to degrade the radar coverage in the least useful observation area.
  • the angles C and D between the longitudinal axis of the ship 1 and the spokes 14 and 15 are more or less 45 degrees.
  • the radome 5 is made by means of several identical panels (4, 6, 8 or more) some or all of which can be dismounted.
  • the junctions 21 between the panels which are not hidden by a chute 10 will have to be transparent to produce the minimum disturbance in the field that passes through the radome 5.
  • a thickness of the material of the radome 5 is chosen at the junctions 21 such that the phase and the amplitude at the crossing at the junctions 21 are substantially the same. the phase and the amplitude at the crossing of the remainder of the radome 5.
  • the wall of the radome 5 and the panel 13 being made of a compensated skin type material formed by a monolithic material optionally comprising matching circuits, the junctions 21 are made at mid-thickness, so that there is no physical difference between the junctions 21 and the rest of the radome 5. The thickness at the junction 21 is then equal to the thickness of the rest of the wall of the radome 5.

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  • Details Of Aerials (AREA)
EP10305663A 2009-06-23 2010-06-21 Zwei stockiger, integrierter Mast mit einem einer abnehmbaren Öffnungsplatte aufweisenden Radom Withdrawn EP2267837A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0954249A FR2947101B1 (fr) 2009-06-23 2009-06-23 Mat integre a deux etages comportant un radome a panneau demontable et radome associe

Publications (1)

Publication Number Publication Date
EP2267837A1 true EP2267837A1 (de) 2010-12-29

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP10305663A Withdrawn EP2267837A1 (de) 2009-06-23 2010-06-21 Zwei stockiger, integrierter Mast mit einem einer abnehmbaren Öffnungsplatte aufweisenden Radom

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EP (1) EP2267837A1 (de)
FR (1) FR2947101B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013045231A1 (fr) * 2011-09-30 2013-04-04 Thales Dispositif de detection et de localisation de mobiles equipes de radars et procede associe
GB2557629A (en) * 2016-12-13 2018-06-27 Bae Systems Plc Antenna arrangement

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU188279U1 (ru) * 2018-12-09 2019-04-04 Виталий Алексеевич Пелешенко Мачта судна

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0495792A (ja) * 1990-08-07 1992-03-27 Tech Res & Dev Inst Of Japan Def Agency アンテナ装置
GB2337538A (en) * 1998-05-21 1999-11-24 Richard Paul Wilkinson Tubular mast
EP1198024A1 (de) * 2000-10-16 2002-04-17 Simexgroup AG Antennenmast
FR2871579A1 (fr) 2004-06-11 2005-12-16 Dcn Sa Mature multifonctions integree
GB2427077A (en) * 2005-06-10 2006-12-13 Alan Dick & Company Ltd Antenna housing suitable for stacking multiple cellular telecoms base-station antennas

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0495792A (ja) * 1990-08-07 1992-03-27 Tech Res & Dev Inst Of Japan Def Agency アンテナ装置
GB2337538A (en) * 1998-05-21 1999-11-24 Richard Paul Wilkinson Tubular mast
EP1198024A1 (de) * 2000-10-16 2002-04-17 Simexgroup AG Antennenmast
FR2871579A1 (fr) 2004-06-11 2005-12-16 Dcn Sa Mature multifonctions integree
EP1607762A1 (de) * 2004-06-11 2005-12-21 Dcn Integrierter Multifunktionsmast
GB2427077A (en) * 2005-06-10 2006-12-13 Alan Dick & Company Ltd Antenna housing suitable for stacking multiple cellular telecoms base-station antennas

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013045231A1 (fr) * 2011-09-30 2013-04-04 Thales Dispositif de detection et de localisation de mobiles equipes de radars et procede associe
FR2980853A1 (fr) * 2011-09-30 2013-04-05 Thales Sa Dispositif de detection et de localisation de mobiles equipes de radars et procede associe
GB2557629A (en) * 2016-12-13 2018-06-27 Bae Systems Plc Antenna arrangement

Also Published As

Publication number Publication date
FR2947101A1 (fr) 2010-12-24
FR2947101B1 (fr) 2013-01-04

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