DE411631C - Auxiliary propeller for gliders - Google Patents
Auxiliary propeller for glidersInfo
- Publication number
- DE411631C DE411631C DEH97551D DEH0097551D DE411631C DE 411631 C DE411631 C DE 411631C DE H97551 D DEH97551 D DE H97551D DE H0097551 D DEH0097551 D DE H0097551D DE 411631 C DE411631 C DE 411631C
- Authority
- DE
- Germany
- Prior art keywords
- propeller
- gliders
- wings
- auxiliary
- screw
- 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
Links
Classifications
-
- 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
- B64C11/28—Collapsible or foldable blades
Landscapes
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Eyeglasses (AREA)
Description
Hilfsluftschraube für Segelflugzeuge. Gegenstand der Erfindung ist eine Hilfsluftschraube für Segelflugzeuge, die für den motorlosen Flug selbsttätig eine solche Stellung einnehmen soll, daß sie möglichst wenig Luftwiderstand darbietet. Zu diesem Zweck sind die Flügel. der Luftschraube derart gelenkig an der. Schraubenwelle angeordnet, und der Wirkung einer Hilfskraft (z. B'. Feder) unterwerfen, daß sie dann, wenn der Motor abgestellt wird oder seine Drehzahl wesentlich vermindert wird, sich bis zu einer Grenzstellung zusammenfalten, bei der sie etwa der Schraubenwelle parallel sind.Auxiliary propeller for gliders. The subject of the invention is an auxiliary propeller for gliders, which is automatic for motorless flight should assume such a position that it presents as little air resistance as possible. To this end are the wings. the propeller so articulated on the. Screw shaft arranged, and subject to the action of an auxiliary force (e.g. spring) that they when the engine is switched off or its speed is significantly reduced, fold up to a limit position where they are about the screw shaft are parallel.
Zwei Ausführungsbeispiele sind in der Zeichnung schematisch dargestellt.Two exemplary embodiments are shown schematically in the drawing.
Alrb. i und z zeigen seine Druckschraube gemäß der Erfindung in Seiten- bzw. Vorderansicht. Abb. 3 und q. zeigen in derselben Darstellung eine Zugschraube.Alrb. i and z show his pressure screw according to the invention in side or front view. Fig. 3 and q. show a lag screw in the same illustration.
Die beiden Schraubenflügel a sind an der Schraubenwelle b mittels der Bolzen c gelenkig befestigt, derart, daß sie .bei der in vollen Linien gezeichneten Arbeitsstellung sich gegenentsprechende Anschläge in der Nähe der Gelenkbolzen c legen. Eine Druckfeder d wirkt mittels der beiden Zugstangen e auf die Flügel ein und sucht sie in der Drehrichtung entsprechend den beigezeichneten Pfeilen bis in die mit strichpunktierten Linien gezeichnete Stellung auszuschwingen, in welcher die Flügel der Schraubenachse parallel sind.The two screw wings a are on the screw shaft b by means the bolt c is articulated in such a way that it .below the drawn in full lines Working position counteracting stops in the vicinity of the hinge pin c place. A compression spring d acts on the wings by means of the two tie rods e and look for it in the direction of rotation according to the arrows drawn up to in to swing out the position drawn with dash-dotted lines in which the wings of the screw axis are parallel.
Der Wirkung der Feder d wirkt jedoch die Resultierende aus Fliehkraft und Luftwiderstand. entgegen, wenn die Schraubenwelle b vom Motor angetrieben wird, und zwar ist die Stärke der Feder und die Kraftübertragung von der Feder auf die Flügel derart be. messen,-=daß beim Motorlug die Federwirkung überwunden wird und die mit ausgezogenen, Linien dang stellte Lage der Flügeloder eine Zwischenlage zwischen dieser Lage und der strichpunktiert gezeichneten Ruhelage eingenommen wird, bei Gleitflug und ruhenden Schraubenwelle aber die Schraube die Stellung geringsten. Luftwiderstandes entsprechend den. strichpunktierten Linien einnimmt.The effect of the spring d, however, is the result of the centrifugal force and air resistance. contrary when the screw shaft b is driven by the motor, namely is the strength of the spring and the power transmission from the Feather on the wings in such a way. measure, - = that the spring action is overcome when the motor is running and the position of the wings or an intermediate layer indicated with solid lines is taken between this position and the rest position shown in dash-dotted lines, in gliding flight and stationary propeller shaft, however, the propeller has the lowest position. Air resistance according to the. dotted lines occupies.
Die Flugrichtung ist in den Abb. i und 3 je durch einen Pfeil angedeutet. Bei, geeigneter Ausbildung der Gelenkstellen können in der Ruhestellung die Flügel sich infolge des ' Zusammenpassens der Flügelschrägflächen fast vollständig aufeinanderlegen.The direction of flight is indicated in Figs. I and 3 by an arrow. With a suitable design of the hinge points, the wings can be in the rest position almost completely lie on top of one another as a result of the 'matching of the wing inclined surfaces.
Nur der Deutlichkeit wegen, sind in. den Abbildungen die Gelenkstellen der Flügel verhältnismäßig weit auseinander gezeichnet.Only for the sake of clarity are the joints in the illustrations the wings drawn relatively far apart.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEH97551D DE411631C (en) | 1924-06-13 | 1924-06-13 | Auxiliary propeller for gliders |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEH97551D DE411631C (en) | 1924-06-13 | 1924-06-13 | Auxiliary propeller for gliders |
Publications (1)
Publication Number | Publication Date |
---|---|
DE411631C true DE411631C (en) | 1925-03-28 |
Family
ID=7167840
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEH97551D Expired DE411631C (en) | 1924-06-13 | 1924-06-13 | Auxiliary propeller for gliders |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE411631C (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2500382A (en) * | 1945-07-20 | 1950-03-14 | Elton H Rowley | Folding propeller |
FR2429708A1 (en) * | 1978-06-27 | 1980-01-25 | Volvo Penta Ab | PROPELLER DEVICE FOR BOATS |
EP0011552A1 (en) * | 1978-11-08 | 1980-05-28 | France Helices | Marine propeller with foldable blades |
DE2854977A1 (en) * | 1978-12-20 | 1980-07-10 | Claus Dr Ing Oehler | Propeller with blades foldable upstream - has blades mounted on swivel bearing and aerodynamic and centrifugal loads are balanced in working position |
DE3217172A1 (en) * | 1982-05-07 | 1983-12-08 | Werner 5401 Rhens Kuffner | High-performance glider |
DE3240995A1 (en) * | 1982-11-03 | 1984-05-03 | Hoffmann Fluzeugbau Friesach GmbH, 9322 Friesach | Motor-glider |
DE3245011A1 (en) * | 1982-12-06 | 1984-06-07 | Thomas Dipl.-Ing. 8000 München Fischer | Glider with a removable auxiliary engine |
DE3246635A1 (en) * | 1982-12-16 | 1984-06-20 | Thomas Dipl.-Ing. 8000 München Fischer | Propeller having propeller blades which can be folded together |
-
1924
- 1924-06-13 DE DEH97551D patent/DE411631C/en not_active Expired
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2500382A (en) * | 1945-07-20 | 1950-03-14 | Elton H Rowley | Folding propeller |
FR2429708A1 (en) * | 1978-06-27 | 1980-01-25 | Volvo Penta Ab | PROPELLER DEVICE FOR BOATS |
US4275991A (en) * | 1978-06-27 | 1981-06-30 | Ab Volvo Penta | Boat propeller |
EP0011552A1 (en) * | 1978-11-08 | 1980-05-28 | France Helices | Marine propeller with foldable blades |
FR2440869A1 (en) * | 1978-11-08 | 1980-06-06 | Renault Marine Couach | IMPROVEMENTS TO MARINE PROPELLERS WITH FOLDABLE BLADES |
DE2854977A1 (en) * | 1978-12-20 | 1980-07-10 | Claus Dr Ing Oehler | Propeller with blades foldable upstream - has blades mounted on swivel bearing and aerodynamic and centrifugal loads are balanced in working position |
DE3217172A1 (en) * | 1982-05-07 | 1983-12-08 | Werner 5401 Rhens Kuffner | High-performance glider |
DE3240995A1 (en) * | 1982-11-03 | 1984-05-03 | Hoffmann Fluzeugbau Friesach GmbH, 9322 Friesach | Motor-glider |
DE3245011A1 (en) * | 1982-12-06 | 1984-06-07 | Thomas Dipl.-Ing. 8000 München Fischer | Glider with a removable auxiliary engine |
DE3246635A1 (en) * | 1982-12-16 | 1984-06-20 | Thomas Dipl.-Ing. 8000 München Fischer | Propeller having propeller blades which can be folded together |
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