DE2449932A1 - Lightweight strong structural element - has aluminium sheeting combined with hard foam plastics material - Google Patents

Lightweight strong structural element - has aluminium sheeting combined with hard foam plastics material

Info

Publication number
DE2449932A1
DE2449932A1 DE19742449932 DE2449932A DE2449932A1 DE 2449932 A1 DE2449932 A1 DE 2449932A1 DE 19742449932 DE19742449932 DE 19742449932 DE 2449932 A DE2449932 A DE 2449932A DE 2449932 A1 DE2449932 A1 DE 2449932A1
Authority
DE
Germany
Prior art keywords
sheet
combined
structural element
plastics material
hard foam
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.)
Pending
Application number
DE19742449932
Other languages
German (de)
Inventor
Gerd Berchtold
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE19742449932 priority Critical patent/DE2449932A1/en
Publication of DE2449932A1 publication Critical patent/DE2449932A1/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/046—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of foam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/18—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C3/00—Wings
    • B64C3/20—Integral or sandwich constructions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/544—Torsion strength; Torsion stiffness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/718—Weight, e.g. weight per square meter
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2605/00—Vehicles
    • B32B2605/18—Aircraft

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Toys (AREA)
  • Laminated Bodies (AREA)

Abstract

The composite structural member suitable for aircraft wings of over 4 metres long, vehicles, etc. consists of thin cladding sheet enclosing a hard plastics foam to give a strong, light member giving optimum resistance to bending, torsion or buckling, due to the distance of the sheet from the torsional or bending axis when suitably designed. The sheet may be 0.5mm thick aluminium alloy, and the plastics filler can be moulded onto it without requiring an adhesive, giving a speedy manufacturing method, where the metal requires no further treatment or working. The cladding sheet may have overlapping edges secured by adhesive, and strengthening inserts may be moulded in position.

Description

Dünnblech-Kunststoffschaum-Sauweise Es hanaelt sich hier um eine ibeichtbauweise bestehend aus festen Leichtmetallblechen in Kombination mit harten Kunststoffschäumen.Dabei werden die optimalen Widerstandsmomente der Bleche (möglichst große Entfernung von der Biege- bzw. Torsionsachse -hauptsächlich Außentragend ) voll amsgenutzt.Thin sheet plastic foam method of construction It is a case of a lightweight construction Consists of solid light metal sheets in combination with hard plastic foams the optimum moments of resistance of the sheets (as large as possible from the bending or torsion axis - mainly external load-bearing) is fully utilized.

Mit dem dazwischenliegenden bzw. umgebenden Kunststoffschaum wird die Knicksteifigkeit des Dünnbleches erhöht.With the intermediate or surrounding plastic foam the buckling resistance of the thin sheet is increased.

Beispiel: Flugzeugleitwerk 4 m Spannweite Zugeschnittenes 0,5 mm Blech ( Al-Legierung) wird in eine zweiteilige Form gelegt und zugleich mit dem Schließen um die Nasenkante gebogen (die Endseiten des Profils werden dabei mit einem Metallkleber zusammengeklebt).Mit hartem Tolyurethan-Leichtschaum wird die Form ausgegossen.Dabei wird das @lech in die Form gepreßt. (siehe Zeichnung Abb.3) Die Vorteile dieser Bauweise gegenüber den entsprechenden jetzigen technischen Stand (Schaum mit GfK umgeben) liegt hauptsächlich in der schnellen Fertigung.Example: Aircraft tail unit 4 m span Cut 0.5 mm sheet metal (Al alloy) is placed in a two-part mold and at the same time as it is closed bent around the edge of the nose (the end sides of the profile are attached with a metal adhesive The mold is filled with hard polyurethane lightweight foam the @lech is pressed into the mold. (see drawing Fig.3) The advantages of this Construction method compared to the corresponding current technical status (foam with GRP surrounded) is mainly due to the fast production.

-3ei Einzelanfertigung oder großen Teilen kann auf die Form verzichtet werden,wenn durch innere Stützbleche ein Ausbeulen des bleches verhindert wird (siehe Abb.4).- In the case of one-off production or large parts, the shape can be dispensed with if the inner support plates prevent the plate from buckling (see Fig.4).

Für genügende Verbindung zwischen Schaum und Blech sorgt meistens der Jchaurm selbst. Oberflächenbearbeitungen sind nicht mehr nötig. An höher beanspruchten Teilen können zusätzlich Versteifurgen eingebracht werden oder der Schaum verdichtst werden.A sufficient connection between foam and sheet metal is usually provided the Jchaurm itself. Surface treatments are no longer necessary. At higher stressed Parts can also be stiffened or the foam can be compressed will.

Anwendungsgebiete: Flugzeugbau,Fahrzeugbau,allgemeiner Bausektor usw.Areas of application: aircraft construction, vehicle construction, general construction sector, etc.

Claims (1)

Dünnblech-Kunststoffschaum-BauweiseThin sheet plastic foam construction Patentansprüche: Die Ansprüche beziehen sich auf die Bauweise,die dadurch gekennzeichnet ist,daß Dünnbleche mit kunststoffschäumen kombiniert werden.Claims: The claims relate to the construction that is characterized in that thin sheets are combined with plastic foams. Ausführungsbeispiele sieht beiliegende Zeichnungen! Erfindung: Dünnblech-Kunststoffschaum-BauweiseFor example, see attached drawings! Invention: thin sheet plastic foam construction
DE19742449932 1974-10-21 1974-10-21 Lightweight strong structural element - has aluminium sheeting combined with hard foam plastics material Pending DE2449932A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19742449932 DE2449932A1 (en) 1974-10-21 1974-10-21 Lightweight strong structural element - has aluminium sheeting combined with hard foam plastics material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19742449932 DE2449932A1 (en) 1974-10-21 1974-10-21 Lightweight strong structural element - has aluminium sheeting combined with hard foam plastics material

Publications (1)

Publication Number Publication Date
DE2449932A1 true DE2449932A1 (en) 1976-04-29

Family

ID=5928758

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19742449932 Pending DE2449932A1 (en) 1974-10-21 1974-10-21 Lightweight strong structural element - has aluminium sheeting combined with hard foam plastics material

Country Status (1)

Country Link
DE (1) DE2449932A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2814166A1 (en) * 1978-04-01 1979-10-04 Focke & Co PARTITION WALL, IN PARTICULAR MANHOLE WALL FOR CIGARETTE MAGAZINE AND PROCESS AND DEVICE FOR PRODUCING THE SAME
EP2377757A1 (en) * 2010-04-19 2011-10-19 Gatewing NV A wing for an unmanned aircraft

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2814166A1 (en) * 1978-04-01 1979-10-04 Focke & Co PARTITION WALL, IN PARTICULAR MANHOLE WALL FOR CIGARETTE MAGAZINE AND PROCESS AND DEVICE FOR PRODUCING THE SAME
EP2377757A1 (en) * 2010-04-19 2011-10-19 Gatewing NV A wing for an unmanned aircraft
WO2011131382A1 (en) * 2010-04-19 2011-10-27 Gatewing Nv A wing for an unmanned aircraft
CN102858630A (en) * 2010-04-19 2013-01-02 加特温股份有限公司 A wing for an unmanned aircraft
US8827206B2 (en) 2010-04-19 2014-09-09 Gatewing Nv Wing for an unmanned aircraft
CN102858630B (en) * 2010-04-19 2015-09-09 加特温股份有限公司 For the unmanned plane of image acquisition or supervision

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