DE2707317A1 - Resistance heating element for aircraft wings and helicopter blades - consists of mat of carbon or boron fibres and glass fibres - Google Patents

Resistance heating element for aircraft wings and helicopter blades - consists of mat of carbon or boron fibres and glass fibres

Info

Publication number
DE2707317A1
DE2707317A1 DE19772707317 DE2707317A DE2707317A1 DE 2707317 A1 DE2707317 A1 DE 2707317A1 DE 19772707317 DE19772707317 DE 19772707317 DE 2707317 A DE2707317 A DE 2707317A DE 2707317 A1 DE2707317 A1 DE 2707317A1
Authority
DE
Germany
Prior art keywords
heating element
fibres
mat
resistance heating
carbon
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Withdrawn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
DE19772707317
Other languages
German (de)
Inventor
Hellmuth Dipl Ing Schmedemann
Wolfgang Ing Grad Voelkner
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.)
Licentia Patent Verwaltungs GmbH
Original Assignee
Licentia Patent Verwaltungs 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 Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Priority to DE19772707317 priority Critical patent/DE2707317A1/en
Priority to FR7718939A priority patent/FR2356336A1/en
Publication of DE2707317A1 publication Critical patent/DE2707317A1/en
Withdrawn legal-status Critical Current

Links

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
    • B64D15/00—De-icing or preventing icing on exterior surfaces of aircraft
    • B64D15/12—De-icing or preventing icing on exterior surfaces of aircraft by electric heating
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/10—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor
    • H05B3/12—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material
    • H05B3/14—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material the material being non-metallic
    • H05B3/145—Carbon only, e.g. carbon black, graphite
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/20—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
    • H05B3/34—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater flexible, e.g. heating nets or webs
    • H05B3/36—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater flexible, e.g. heating nets or webs heating conductor embedded in insulating material
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/011—Heaters using laterally extending conductive material as connecting means
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/016—Heaters using particular connecting means
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/017—Manufacturing methods or apparatus for heaters
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/033—Heater including particular mechanical reinforcing means
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2214/00—Aspects relating to resistive heating, induction heating and heating using microwaves, covered by groups H05B3/00, H05B6/00
    • H05B2214/02—Heaters specially designed for de-icing or protection against icing

Landscapes

  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Resistance Heating (AREA)
  • Surface Heating Bodies (AREA)

Abstract

The resistance heating element is intended for aircraft wings and rotor blades of a helicopter. It has electrically conducting fibres embedded in an insulating fibrous structure. The structure is bent around the leading edge of the wing. The conducting fibres may be of boron or carbon and the fibres forming the main structure may be of glass. The conducting and insulating fibres may be woven into a mat. Connection may be made to the mat or fibrous structure by evaporating metal onto its edges or by a resin filled with metal particles.

Description

Die Erfindung bezieht sich auf ein elektrisches Widerstands-The invention relates to an electrical resistance

Heizelement, das von einem Träxermaterial nmzebene elektrische Heizwiderstände aufweist und vorzugsweise auf einer beliebig gekriimmten Fläche angeordnet ist, insbesondere zur Verwendung an Flugzeugprofilen oder Hubschraubermotorblittern als Bestandteil einer Enteisungsanlage für Flugzeuge hzw. Hubschraubej nach Patertanmeldung P 26 28 731.0-34 (Patent ........).Heating element made of a carrier material, electric heating resistors and is preferably arranged on any curved surface, especially for use on aircraft profiles or helicopter engine blitters as Part of a de-icing system for aircraft hzw. Lifting screwj according to patent application P 26 28 731.0-34 (patent ........).

Der Hauptanmeldung P 26 28 731.0-34 (dem Hauptpatent ) liegt die Aufgabe zugrunde, ein elektrisches Widerstands-Heizelement zu schaffen, dessen Herstellungskosten verhältnismäßig gering sind und das sich in sehr kurzer Zeit auf eine zu enteisende Fläche aufbringen läßt. Diese Aufgabe wird dadurch gelöst, daß die Heizwiderstände aus in glasfaserver stärktem Kunststoff oder in einem Kohlefaserverbllndwerkstoff eingebetteten Kohlefasern bestehen.The main application P 26 28 731.0-34 (the main patent) is the task based on creating an electrical resistance heating element, its manufacturing cost are relatively low and that can be de-iced in a very short time Can apply surface. This object is achieved in that the heating resistors made of fiberglass-reinforced plastic or a carbon fiber composite material embedded carbon fibers.

Der vorliegenden Erfindung liegt nun die Aufgabe zllgrunde, den egenstand der llauptanmeldllng (des Hauptpatentes ........) weiter zu verbessern und ein elektrisches Widerstands-Heizelement zu schaffen, das mittels besonderer Werkstoffe besonders wirtschaftlich hergestellt werden kann.The present invention is now based on the object zllgrunde of the main application (of the main patent ........) and an electrical To create resistance heating element that is special by means of special materials can be produced economically.

Die Aufgabe wird erfindungsgemäß dadurch gelost, daß die Heizwiderstände aus elektrisch leitenden Fasern bestehen, die in einer Faserverhundstruktur eingebettet sind.The object is achieved according to the invention in that the heating resistors consist of electrically conductive fibers embedded in a fiber interlocking structure are.

In einer Ausgestaltung der Erfindung wird die Verwendung von Borfasern fiir die Heizwiderstände vorgeschlagen. Eine Weiterbildung der Erfindung geht dahin, das als Faserverbundstruktur glasfaserverstärkter Kunststoff, kohlenstoffaserverstärkter Kunststoff oder Kevlar vorgesehen ist.In one embodiment of the invention, the use of boron fibers suggested for the heating resistors. A further development of the invention is as follows: That as a fiber composite structure glass fiber reinforced plastic, carbon fiber reinforced Plastic or Kevlar is provided.

Der besondere Vorteil der Erfindung besteht neben einer kostengiinstigen Herstellung darin, daß das elektrische WiderstanAs-Heizelement als homogener Bestandteil eines Faserverhundkonstruktionsbauelement eines Flugzeuges hzw. Hubschraubers, beispielsweise eines Flugzeugflügelprofiles, hergestellt werden kann.The particular advantage of the invention consists in addition to an inexpensive one Manufactured in that the electrical resistance heating element as a homogeneous component a fiber-dog construction component of an aircraft hzw. Helicopter, for example an aircraft wing profile can be produced.

Claims (3)

"Elektrisches Widerstands-Heizelement" - Zusatzanmeldung zu P 26 28 731.0-34 (Patent ........) ) -P a t e n t a n 5 p r ii c h e 1. Elektrisches Widerstands~Heizelement, das von einem Trägermaterial umgebene elektrische Hei7,wideretände aufweist und vorzugsweise auf einer beliebig ,gekriimmten Fläche angeordnet ist, insbesondere zur Verwendung an Flugzeugprofilen oder Hubschraubermotorblättern als Bestandteil einer Enteisungsanlage für flugzeuge hzw."Electrical resistance heating element" - additional registration to P 26 28 731.0-34 (patent ........)) -P a t e n t a n 5 p r ii c h e 1. Electrical resistance heating element, the electrical heating element surrounded by a carrier material has resistance and is preferably arranged on any curved surface, in particular for use on aircraft profiles or helicopter engine blades as a component a de-icing system for aircraft hzw. Hubschrauber, nach Patentanmeldung P 26 28 731.0-34 Patent ), dadurch gekennzeichnet, daß die Heizwiderstände aus elektrisch leitenden Fasern hestehen, die in einer Faserverbundstruktur eingebettet sind. Helicopter, according to patent application P 26 28 731.0-34 patent), thereby characterized in that the heating resistors are made of electrically conductive fibers, which are embedded in a fiber composite structure. 2. Heizelement nach Anspruch 1, gekennzeichnet durch die Verwendung von Borfasern für die Heizwiderstande.2. Heating element according to claim 1, characterized by the use of boron fibers for the heating resistors. 3. Heizelement nach Anspruch 1, dadurch gekennzeichnet, daß als Faserverbundstruktur glasfaserverstarkter Kunststoff, kohlenstoffaserverstärkter Kunststoff oder Kevlar vorgesehen ist.3. Heating element according to claim 1, characterized in that the fiber composite structure glass fiber reinforced plastic, carbon fiber reinforced plastic or kevlar is provided.
DE19772707317 1976-06-25 1977-02-19 Resistance heating element for aircraft wings and helicopter blades - consists of mat of carbon or boron fibres and glass fibres Withdrawn DE2707317A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE19772707317 DE2707317A1 (en) 1977-02-19 1977-02-19 Resistance heating element for aircraft wings and helicopter blades - consists of mat of carbon or boron fibres and glass fibres
FR7718939A FR2356336A1 (en) 1976-06-25 1977-06-21 Resistance heating element for aircraft wings and helicopter blades - consists of mat of carbon or boron fibres and glass fibres

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19772707317 DE2707317A1 (en) 1977-02-19 1977-02-19 Resistance heating element for aircraft wings and helicopter blades - consists of mat of carbon or boron fibres and glass fibres

Publications (1)

Publication Number Publication Date
DE2707317A1 true DE2707317A1 (en) 1978-08-24

Family

ID=6001725

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19772707317 Withdrawn DE2707317A1 (en) 1976-06-25 1977-02-19 Resistance heating element for aircraft wings and helicopter blades - consists of mat of carbon or boron fibres and glass fibres

Country Status (1)

Country Link
DE (1) DE2707317A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2291575A (en) * 1994-07-21 1996-01-24 Dowty Aerospace Gloucester Heating element for aircraft surface.
WO2010074942A1 (en) * 2008-12-24 2010-07-01 Mra Systems, Inc. Anti-icing system and method for preventing ice accumulation

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2291575A (en) * 1994-07-21 1996-01-24 Dowty Aerospace Gloucester Heating element for aircraft surface.
WO2010074942A1 (en) * 2008-12-24 2010-07-01 Mra Systems, Inc. Anti-icing system and method for preventing ice accumulation
JP2012513934A (en) * 2008-12-24 2012-06-21 エムアールエイ・システムズ・インコーポレイテッド Anti-icing system and method for preventing ice accumulation
US9004407B2 (en) 2008-12-24 2015-04-14 Middle River Aircraft Systems Anti-icing system and method for preventing ice accumulation

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Legal Events

Date Code Title Description
8141 Disposal/no request for examination