DE893892C - Aircraft wing, propeller wing or the like with a cavity extending inside to the wing end and provided with inlet openings - Google Patents

Aircraft wing, propeller wing or the like with a cavity extending inside to the wing end and provided with inlet openings

Info

Publication number
DE893892C
DE893892C DEL12665A DEL0012665A DE893892C DE 893892 C DE893892 C DE 893892C DE L12665 A DEL12665 A DE L12665A DE L0012665 A DEL0012665 A DE L0012665A DE 893892 C DE893892 C DE 893892C
Authority
DE
Germany
Prior art keywords
wing
inlet openings
propeller
aircraft
cavity
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
Application number
DEL12665A
Other languages
German (de)
Inventor
Gerhard Lassmann
Karl Leschhorn
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 DEL12665A priority Critical patent/DE893892C/en
Application granted granted Critical
Publication of DE893892C publication Critical patent/DE893892C/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C23/00—Influencing air flow over aircraft surfaces, not otherwise provided for

Landscapes

  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Toys (AREA)

Description

Es ist bekannt, daß beim fliegenden Luftfahrzeug am äußeren Ende des Tragflügels ein Wirbelgebiet vorhanden ist, das der Geschwindigkeit des Luftfahrzeuges einen erheblichen Widerstand entgegensetzt. Von der unterenTragflügelseite(Druckseite) wirbelt Luft um das äußere Ende des Tragflügels auf seine Oberseite (Sogseite) und bildet dabei den sogenannten Wirbelzopf oder induzierten Widerstand.It is known that when flying aircraft at the outer end of the Wing there is a vortex area that corresponds to the speed of the aircraft opposed considerable resistance. From the lower wing side (pressure side) swirls air around the outer end of the wing onto its top (suction side) and forms the so-called vortex braid or induced drag.

Die Erfindung bezweckt die Herabsetzung des induzierten Widerstandes dadurch, daß Luft durch Einlaßöffnungen, die an der unteren, vorderen Seite des Flügels :angebracht sind, in einen im Innern des Flügels befindlichen, bis an das Flügelende sich erstreckenden Hohlraum eintritt und in diesem so geführt wird, daß eine kreisende Bewegung im Sinne einer vorwärts rollenden Walze entsteht und am Flügelende zwecks Unterdrückung des Randwirbels austritt.The invention aims to reduce the induced drag by letting air through inlet openings on the lower, front side of the Wing: are attached, in one located inside the wing, up to the Wing tip extending cavity enters and is guided in this so that a circular movement in the sense of a forward rolling roller is created and on Wing tip emerges for the purpose of suppressing the tip vortex.

Vorteilhaft liegen die Einlaßöffnungen auf der Druckseite des Flügels und `haben eine solche Form, daß sie luftfangend wirken.The inlet openings are advantageously on the pressure side of the wing and `have such a shape that they have an air-catching effect.

Der Hohlraum bildet zweckmäßig eine Röhre von möglichst großem Durchmesser und liegt im Vorderteil des Flügels.The cavity expediently forms a tube with the largest possible diameter and lies in the front part of the wing.

Die Erfindung ist in .der Zeichnung beispielsweise und schematisch dargestellt und zeigt die Einrichtung mit dem Verlauf der Strömung an einem Tragflügelstück.The invention is in .der drawing example and schematically shown and shows the device with the course of the flow on a wing piece.

Am Tragflügel r ist ein Schlitz 2 an der unteren vorderen Seite so ausgebildet, daß er in Fluglage die benötigte Luft fängt. Im Rohr 3 wird die eintretende Luft in Drehrichtung der Pfeile 4 in Drehung gebracht und zum Flügelende abgeleitet. Dort tritt sie am offenen Rohrende aus und trifft mit dem Wirbelzopf zusammen, der durch punh tierte Pfeile 5 gekennzeichnet ist. Da beide Wirbelstraßen entgegengesetzte Drohrichtung haben, heben sie sich auf. Die rotierende Luftwalze in den Flügeln übt durch ihre Kreiselwirkung eine stabilisierende Wirkung auf das Flugzeug aus.On the wing r there is a slot 2 on the lower front side trained that it catches the required air in flight. In the pipe 3 is the incoming Air brought into rotation in the direction of rotation of arrows 4 and diverted to the wing tip. There it emerges at the open end of the pipe and meets the pigtail of the vortex, the is indicated by dotted arrows 5. Since both vortex streets are opposite Have a threatening direction, they cancel each other out. The rotating air cylinder in the wings has a stabilizing effect on the aircraft due to its gyroscopic effect.

Claims (5)

PATENTANSPRÜCHE: 1. Flugzeugtragflügel, Schraubenflügel ad. d@l. mit im. Innern bis an das Flügelende sich erstreckendem und mit Einlaßöffnungen versehenem Hohlraum, gekennzeichnet durch eine solche Luftführung im Hohlraum, daß die Luft in diesem eine kreisende Bewegung im Sinne einer vorwärts rollenden Walze ausführt und am Flügelende zwecks Unterdrückung des Randwirbels austritt. PATENT CLAIMS: 1. Airplane wing, propeller wing ad. d @ l. with im. Inside up to the wing tip and provided with inlet openings cavity, characterized by such an air duct in the cavity that the air in this executes a circular movement in the sense of a forward rolling roller and exits at the wing end for the purpose of suppressing the tip vortex. 2. Flugzeugtragflügel, Schraubenflügel ad. dgl. nach Anspruch 1, dadurch gekennzeichnet, daß die Einlaßöffnungen auf der Druckseite des Flügels liegen. 2. Aircraft wing, propeller wing ad. Like. According to claim 1, characterized characterized in that the inlet openings are on the pressure side of the wing. 3. Flugzeugtragflügel, Schraubenflügel ad. dgl. nach Anspruch 1 und 2, gekennzeichnet durch solche Form der Einläßöffnungen, daß sie luftfangend wirken. q,. 3. Airplane wing, propeller wing ad. Like. According to claim 1 and 2, characterized by such a shape of the inlet openings that they act to trap air. q ,. Flugzeugtragflügel, Schraubenflügel ad. dgl. nach Anspruch 1 bis 3, dadurch gekennzeichnet, daß der Hohlraum im Innern des Flügels eine die Einlaßöffnungen in der Mantelfläche enthaltende, sich längs des Flügels erstreckende Röhre von möglichst großem Durchmesser bildet. Aircraft wing, Screw wing ad. Like. According to claim 1 to 3, characterized in that the Cavity inside the wing one containing the inlet openings in the lateral surface, along the wing extending tube of the largest possible diameter. 5. Flugzeugtragflügel, Schraubenflügel ad. dgl. nach Anspruch 1 bis 4, dadurch gekennzeichnet, daß der Hohlraum im Vorderteil des Flügels liegt. ' Angezogene Druckschriften: USA.-Patentschrift Nr. 2 075 817; französische Patentschriften Nr.g71 g92, 7298:21.5. Aircraft wing, propeller wing ad. Like. According to claim 1 to 4, characterized in that that the cavity is in the front part of the wing. References: United States Patent Specification No. 2,075,817; French patents nos. g71, g92, 7298: 21.
DEL12665A 1952-06-22 1952-06-22 Aircraft wing, propeller wing or the like with a cavity extending inside to the wing end and provided with inlet openings Expired DE893892C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEL12665A DE893892C (en) 1952-06-22 1952-06-22 Aircraft wing, propeller wing or the like with a cavity extending inside to the wing end and provided with inlet openings

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEL12665A DE893892C (en) 1952-06-22 1952-06-22 Aircraft wing, propeller wing or the like with a cavity extending inside to the wing end and provided with inlet openings

Publications (1)

Publication Number Publication Date
DE893892C true DE893892C (en) 1953-10-19

Family

ID=7259258

Family Applications (1)

Application Number Title Priority Date Filing Date
DEL12665A Expired DE893892C (en) 1952-06-22 1952-06-22 Aircraft wing, propeller wing or the like with a cavity extending inside to the wing end and provided with inlet openings

Country Status (1)

Country Link
DE (1) DE893892C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3836673A1 (en) * 1988-10-28 1990-05-03 Michael Harriehausen Method and arrangement for reducing the induced drag of a wing
US5054720A (en) * 1989-09-18 1991-10-08 Mcdonnell Douglas Corporation Trapped vortex cavity

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR729821A (en) * 1931-01-16 1932-08-01 Improvements made to devices comprising surfaces which must coact with a fluid. especially to airplanes
US2075817A (en) * 1934-08-17 1937-04-06 Arthur W Loerke Wing vortex reducer
FR971992A (en) * 1940-12-07 1951-01-24 Jet-propelled aerial vehicles improvements

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR729821A (en) * 1931-01-16 1932-08-01 Improvements made to devices comprising surfaces which must coact with a fluid. especially to airplanes
US2075817A (en) * 1934-08-17 1937-04-06 Arthur W Loerke Wing vortex reducer
FR971992A (en) * 1940-12-07 1951-01-24 Jet-propelled aerial vehicles improvements

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3836673A1 (en) * 1988-10-28 1990-05-03 Michael Harriehausen Method and arrangement for reducing the induced drag of a wing
US5054720A (en) * 1989-09-18 1991-10-08 Mcdonnell Douglas Corporation Trapped vortex cavity

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