GB2319117B - Improvements in or relating to materials which absorb electromagnetic energy - Google Patents

Improvements in or relating to materials which absorb electromagnetic energy

Info

Publication number
GB2319117B
GB2319117B GB7906287A GB7906287A GB2319117B GB 2319117 B GB2319117 B GB 2319117B GB 7906287 A GB7906287 A GB 7906287A GB 7906287 A GB7906287 A GB 7906287A GB 2319117 B GB2319117 B GB 2319117B
Authority
GB
United Kingdom
Prior art keywords
relating
materials
electromagnetic energy
absorb electromagnetic
absorb
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
Application number
GB7906287A
Other versions
GB2319117A (en
GB7906287D0 (en
Inventor
Sydney Clifford Woolcock
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.)
EMI Ltd
Original Assignee
EMI Ltd
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 EMI Ltd filed Critical EMI Ltd
Publication of GB7906287D0 publication Critical patent/GB7906287D0/en
Publication of GB2319117A publication Critical patent/GB2319117A/en
Application granted granted Critical
Publication of GB2319117B publication Critical patent/GB2319117B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
    • F01D25/005—Selecting particular materials
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
    • F02C7/04—Air intakes for gas-turbine plants or jet-propulsion plants
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q17/00—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q17/00—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems
    • H01Q17/004—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems using non-directional dissipative particles, e.g. ferrite powders
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q17/00—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems
    • H01Q17/005—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems using woven or wound filaments; impregnated nets or clothes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q17/00—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems
    • H01Q17/007—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems with means for controlling the absorption
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2300/00—Materials; Properties thereof
    • F05D2300/50—Intrinsic material properties or characteristics
    • F05D2300/504—Reflective properties
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2300/00—Materials; Properties thereof
    • F05D2300/60—Properties or characteristics given to material by treatment or manufacturing
    • F05D2300/603—Composites; e.g. fibre-reinforced
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T50/00—Aeronautics or air transport
    • Y02T50/60—Efficient propulsion technologies, e.g. for aircraft

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Aerials With Secondary Devices (AREA)
GB7906287A 1978-02-22 1979-02-22 Improvements in or relating to materials which absorb electromagnetic energy Expired - Fee Related GB2319117B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB713678 1978-02-22

Publications (3)

Publication Number Publication Date
GB7906287D0 GB7906287D0 (en) 1998-03-18
GB2319117A GB2319117A (en) 1998-05-13
GB2319117B true GB2319117B (en) 1998-09-02

Family

ID=9827304

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7906287A Expired - Fee Related GB2319117B (en) 1978-02-22 1979-02-22 Improvements in or relating to materials which absorb electromagnetic energy

Country Status (1)

Country Link
GB (1) GB2319117B (en)

Citations (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB795510A (en) * 1954-06-11 1958-05-21 Siemens Ag Improvements in or relating to arrangements for reducing or preventing the reflection of electromagnetic waves
GB965517A (en) * 1962-02-05 1964-07-29 Ibm Pressure-sensitive transfer media
GB1001814A (en) * 1961-03-20 1965-08-18 Edward Bellamy Mcmillan Absorber for radio waves
GB1043125A (en) * 1963-03-01 1966-09-21 Csf Housing for microwave receivers and transmitters
GB1049588A (en) * 1962-03-21 1966-11-30 Union Carbide Corp A graphite material and process for producing same
GB1060830A (en) * 1954-05-10 1967-03-08 Eltro Gmbh Improvements in materials with electromagnetic wave reflection properties
GB1074892A (en) * 1956-08-27 1967-07-05 Eltro Gmbh Roofing boards having high frequency electro-magnetic absorbing properties
GB1163442A (en) * 1965-09-07 1969-09-04 Scott Paper Co Pyrolytic Graphite Structures
GB1194907A (en) * 1966-11-08 1970-06-17 Atlantic Res Corp Improvements in or relating to Pyrolytic Graphite Composite Materials
GB1214413A (en) * 1968-07-31 1970-12-02 Standard Oil Co Carbon electrode
GB1311537A (en) * 1969-10-08 1973-03-28 Bendix Corp All carbon composite disc structures
GB1312929A (en) * 1969-08-27 1973-04-11 Lorraine Carbone Method of manufacturing a carbon material resilient and or resustabt
GB1331350A (en) * 1970-03-11 1973-09-26 Sigri Elektrographit Gmbh Flame protections
GB1358869A (en) * 1970-06-22 1974-07-03 Carborundum Co Reinforced carbon bodies
GB1410107A (en) * 1972-10-06 1975-10-15 Mitsubishi Paper Mills Ltd Process for manufacturing an electroconductive polyolefin material
GB1426077A (en) * 1972-02-25 1976-02-25 Union Carbide Corp Calendering of laminated polymeric materials
GB1475237A (en) * 1974-03-29 1977-06-01 Bendix Corp Carbon friction disc for a multiple disc brake

Patent Citations (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1060830A (en) * 1954-05-10 1967-03-08 Eltro Gmbh Improvements in materials with electromagnetic wave reflection properties
GB795510A (en) * 1954-06-11 1958-05-21 Siemens Ag Improvements in or relating to arrangements for reducing or preventing the reflection of electromagnetic waves
GB1074892A (en) * 1956-08-27 1967-07-05 Eltro Gmbh Roofing boards having high frequency electro-magnetic absorbing properties
GB1001814A (en) * 1961-03-20 1965-08-18 Edward Bellamy Mcmillan Absorber for radio waves
GB965517A (en) * 1962-02-05 1964-07-29 Ibm Pressure-sensitive transfer media
GB1049588A (en) * 1962-03-21 1966-11-30 Union Carbide Corp A graphite material and process for producing same
GB1043125A (en) * 1963-03-01 1966-09-21 Csf Housing for microwave receivers and transmitters
GB1163442A (en) * 1965-09-07 1969-09-04 Scott Paper Co Pyrolytic Graphite Structures
GB1194907A (en) * 1966-11-08 1970-06-17 Atlantic Res Corp Improvements in or relating to Pyrolytic Graphite Composite Materials
GB1214413A (en) * 1968-07-31 1970-12-02 Standard Oil Co Carbon electrode
GB1312929A (en) * 1969-08-27 1973-04-11 Lorraine Carbone Method of manufacturing a carbon material resilient and or resustabt
GB1311537A (en) * 1969-10-08 1973-03-28 Bendix Corp All carbon composite disc structures
GB1331350A (en) * 1970-03-11 1973-09-26 Sigri Elektrographit Gmbh Flame protections
GB1358869A (en) * 1970-06-22 1974-07-03 Carborundum Co Reinforced carbon bodies
GB1426077A (en) * 1972-02-25 1976-02-25 Union Carbide Corp Calendering of laminated polymeric materials
GB1410107A (en) * 1972-10-06 1975-10-15 Mitsubishi Paper Mills Ltd Process for manufacturing an electroconductive polyolefin material
GB1475237A (en) * 1974-03-29 1977-06-01 Bendix Corp Carbon friction disc for a multiple disc brake

Also Published As

Publication number Publication date
GB2319117A (en) 1998-05-13
GB7906287D0 (en) 1998-03-18

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19981202