CA1340376C - Weak radar signature blade - Google Patents
Weak radar signature bladeInfo
- Publication number
- CA1340376C CA1340376C CA000570166A CA570166A CA1340376C CA 1340376 C CA1340376 C CA 1340376C CA 000570166 A CA000570166 A CA 000570166A CA 570166 A CA570166 A CA 570166A CA 1340376 C CA1340376 C CA 1340376C
- Authority
- CA
- Canada
- Prior art keywords
- une
- pale
- est
- coque
- que
- 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.)
- Expired - Fee Related
Links
- 240000002228 Cynara humilis Species 0.000 claims description 81
- 235000005921 Cynara humilis Nutrition 0.000 claims description 81
- 235000011929 mousse Nutrition 0.000 claims description 27
- 239000002131 composite material Substances 0.000 claims description 16
- 230000004224 protection Effects 0.000 claims description 12
- 241000531908 Aramides Species 0.000 claims description 4
- 239000004760 aramid Substances 0.000 claims description 4
- 229920001296 polysiloxane Polymers 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 2
- 229920000728 polyester Polymers 0.000 claims description 2
- 239000003989 dielectric material Substances 0.000 abstract 2
- 239000000463 material Substances 0.000 abstract 2
- 230000002745 absorbent Effects 0.000 abstract 1
- 239000002250 absorbent Substances 0.000 abstract 1
- 229920002994 synthetic fiber Polymers 0.000 abstract 1
- 240000008042 Zea mays Species 0.000 description 14
- 238000010521 absorption reaction Methods 0.000 description 4
- 241000940835 Pales Species 0.000 description 3
- 241001080024 Telles Species 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 2
- 229940082150 encore Drugs 0.000 description 2
- 241000238876 Acari Species 0.000 description 1
- 241000195940 Bryophyta Species 0.000 description 1
- 229920000271 Kevlar® Polymers 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 241000287107 Passer Species 0.000 description 1
- 241000897276 Termes Species 0.000 description 1
- 239000004963 Torlon Substances 0.000 description 1
- 229920003997 Torlon® Polymers 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000004761 kevlar Substances 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D7/00—Arrangements of military equipment, e.g. armaments, armament accessories, or military shielding, in aircraft; Adaptations of armament mountings for aircraft
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C11/00—Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft
- B64C11/16—Blades
- B64C11/20—Constructional features
- B64C11/26—Fabricated blades
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C27/00—Rotorcraft; Rotors peculiar thereto
- B64C27/32—Rotors
- B64C27/46—Blades
- B64C27/473—Constructional features
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C3/00—Wings
- B64C3/20—Integral or sandwich constructions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C27/00—Rotorcraft; Rotors peculiar thereto
- B64C27/32—Rotors
- B64C27/46—Blades
- B64C27/473—Constructional features
- B64C2027/4733—Rotor blades substantially made from particular materials
- B64C2027/4736—Rotor blades substantially made from particular materials from composite materials
Landscapes
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
- Laminated Bodies (AREA)
- Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
- Aerials With Secondary Devices (AREA)
- Radar Systems Or Details Thereof (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Reinforced Plastic Materials (AREA)
Abstract
Pale à faible signature radar. La pale (10) à faible signature radar selon l'invention est telle que la coque travaillante (13) et chaque longeron (12) sont réalisés en matériaux diélectriques et le matériau de chaque élément de remplissage (17a, 17b) est un matériau absorbant les ondes électromagnétiques et/ou la coque travaillante (13), chaque longeron (12) et chaque élément de remplissage (17a, 17b) sont assemblés en un noyau structural (11), assurant la résistance structurale de la pale (10) et entouré d'un revêtement d'habillage (18) comprenant une coque externe (19a, 19b), rigide et profilée, en matériaux diélectriques, et une couche (20a, 20b) d'un matériau synthétique souple et léger, absorbant les ondes électromagnétiques et assurant le remplissage entre le noyau (11) et la coque externe (19a, 1l9b), de façon à former un écran radar.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA000617103A CA1341239C (fr) | 1987-06-26 | 1988-06-23 | Radar-evading propeller blade |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8709079A FR2748719B1 (fr) | 1987-06-26 | 1987-06-26 | Pale a faible signature radar |
FR8709079 | 1989-06-30 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA000617103A Division CA1341239C (fr) | 1987-06-26 | 1988-06-23 | Radar-evading propeller blade |
Publications (1)
Publication Number | Publication Date |
---|---|
CA1340376C true CA1340376C (fr) | 1999-02-02 |
Family
ID=9352587
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA000617103A Expired - Fee Related CA1341239C (fr) | 1987-06-26 | 1988-06-23 | Radar-evading propeller blade |
CA000570166A Expired - Fee Related CA1340376C (fr) | 1987-06-26 | 1988-06-23 | Weak radar signature blade |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA000617103A Expired - Fee Related CA1341239C (fr) | 1987-06-26 | 1988-06-23 | Radar-evading propeller blade |
Country Status (6)
Country | Link |
---|---|
CA (2) | CA1341239C (fr) |
DE (1) | DE3821588C1 (fr) |
FR (1) | FR2748719B1 (fr) |
GB (1) | GB2327925B (fr) |
IT (1) | IT8867528A0 (fr) |
NL (1) | NL8801562A (fr) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008024644B4 (de) | 2008-05-21 | 2018-07-26 | Airbus Defence and Space GmbH | Rotorblatt mit darin integriertem Radarabsorber für eine Windkraftanlage |
DE102010039705B4 (de) | 2010-08-24 | 2020-02-27 | Airbus Operations Gmbh | Strukturelement für ein Luft- und Raumfahrzeug und Verfahren zum Herstellen eines derartigen Strukturelementes |
FR2964941B1 (fr) | 2010-09-16 | 2013-03-08 | Eurocopter France | Pale a vulnerabilite minimisee |
GB2485524A (en) * | 2010-10-26 | 2012-05-23 | Vestas Wind Sys As | Foam core containing radar absorbing materials for composite structures |
US9033672B2 (en) * | 2012-01-11 | 2015-05-19 | General Electric Company | Wind turbines and wind turbine rotor blades with reduced radar cross sections |
US9033671B2 (en) * | 2012-01-11 | 2015-05-19 | General Electric Company | Wind turbines and wind turbine rotor blades with reduced radar cross sections |
US9140234B2 (en) | 2012-01-11 | 2015-09-22 | General Electric Company | Wind turbine rotor blades with reduced radar cross sections |
FR3000463B1 (fr) * | 2012-12-27 | 2016-02-05 | Eads Europ Aeronautic Defence | Dispositif d'absorption d'energie pour element de structure d'aeronef |
CN106542079B (zh) * | 2016-11-25 | 2019-03-01 | 江西洪都航空工业集团有限责任公司 | 一种结构型吸波蒙皮设计方法 |
CN113687323B (zh) * | 2021-10-26 | 2022-03-08 | 中国航发四川燃气涡轮研究院 | 一种用于二元矢量发动机的低散射壳体及其应用 |
US11795827B1 (en) * | 2022-04-04 | 2023-10-24 | General Electric Company | Airfoil assembly with a structurally reinforced foam core |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4006479A (en) * | 1969-02-04 | 1977-02-01 | The United States Of America As Represented By The Secretary Of The Air Force | Method for dispersing metallic particles in a dielectric binder |
US4083656A (en) * | 1975-03-21 | 1978-04-11 | Textron, Inc. | Composite rotor blade |
FR2381662A1 (fr) * | 1977-02-28 | 1978-09-22 | Aerospatiale | Pale, notamment pour un rotor d'helicoptere, et son procede de fabrication |
US4316700A (en) * | 1979-04-03 | 1982-02-23 | Schramm Burford J | Unitary, bonded-together helicopter rotorblade |
DE3307066A1 (de) * | 1983-03-01 | 1984-09-13 | Dornier Gmbh, 7990 Friedrichshafen | Mehrschichtiger faserverbundwerkstoff |
-
1987
- 1987-06-26 FR FR8709079A patent/FR2748719B1/fr not_active Expired - Fee Related
-
1988
- 1988-06-07 IT IT8867528A patent/IT8867528A0/it unknown
- 1988-06-20 NL NL8801562A patent/NL8801562A/nl not_active Application Discontinuation
- 1988-06-22 GB GB8814781A patent/GB2327925B/en not_active Expired - Fee Related
- 1988-06-23 CA CA000617103A patent/CA1341239C/fr not_active Expired - Fee Related
- 1988-06-23 CA CA000570166A patent/CA1340376C/fr not_active Expired - Fee Related
- 1988-06-27 DE DE3821588A patent/DE3821588C1/de not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
NL8801562A (nl) | 1998-01-05 |
DE3821588C1 (de) | 1998-02-26 |
GB8814781D0 (en) | 1998-11-25 |
FR2748719A1 (fr) | 1997-11-21 |
GB2327925B (en) | 1999-06-02 |
FR2748719B1 (fr) | 1999-05-07 |
IT8867528A0 (it) | 1988-06-07 |
CA1341239C (fr) | 2001-05-22 |
GB2327925A (en) | 1999-02-10 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
MKLA | Lapsed |