DE888959C - Jack screw - Google Patents
Jack screwInfo
- Publication number
- DE888959C DE888959C DEL12158A DEL0012158A DE888959C DE 888959 C DE888959 C DE 888959C DE L12158 A DEL12158 A DE L12158A DE L0012158 A DEL0012158 A DE L0012158A DE 888959 C DE888959 C DE 888959C
- Authority
- DE
- Germany
- Prior art keywords
- screw
- propulsion
- pivoting
- propeller
- plane
- 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
- B64C27/00—Rotorcraft; Rotors peculiar thereto
- B64C27/32—Rotors
- B64C27/46—Blades
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C27/00—Rotorcraft; Rotors peculiar thereto
- B64C27/22—Compound rotorcraft, i.e. aircraft using in flight the features of both aeroplane and rotorcraft
- B64C27/28—Compound rotorcraft, i.e. aircraft using in flight the features of both aeroplane and rotorcraft with forward-propulsion propellers pivotable to act as lifting rotors
Description
Bei Hubschraubern erfolgt die- Erzeugung- eines Vortriebes bekanntlich durch Vorwärtsneigen der Hubschraube, durch zyklische B:lattwinkelsteuerung oder durch eine besondere Vortriebs,schraube. Diese Vortriebsarten sind umständlich in ihrer Einrichtung und kostspielig im Betrieb. .As is known, propulsion is generated in helicopters by tilting the lifting screw forward, by cyclic B: lath angle control or by a special jacking screw. These types of tunneling are cumbersome in their establishment and costly to operate. .
Wie aus der Zeichnung ersichtlich, werden zur Beseitigung dieser Nachteile erfindungsgemäß an den Flügeln r der Hubschraube besondere Vortriebsflächen 2 .angebracht, die senkrecht zur Hubschraubenebene stehen und um zur Hubschraubenebene senkrecht stehende Achsen schwenkbar sind. Diese Vortriebsflächen werden von ,der - Hubschraubennabe 3 so gesteuert; daß sie beim Rücklauf des betreffenden Schraubenflügels eine radiale und beim Vorlauf eine tangenti,ale, quer zur Längsachse q. des Schraubenflügels gerichtete Lage einnehmen. Es ist zweckmäßig, die Vörtriebsflächen während ihres Rücklaufes nur innerhalb eines beschränkten Sektors S, der etwa 3o° nach denn vorderen Umkehrpunkt beginnt und etwa 3;d° vor dem hinteren Umkehrpunkt endet, die radiale Lage einnehmen zu lassen. Der Luftwiderstand der Vortriebsflächen auf ihrem Umlaufweg ist in radialer Lage größer als bei tangentialer Lage, und dadurch entsteht ein Schub in - Flugrichtung F, der sich über die Luftschraubenbefestigung 3B dem Flugkörper K mitteilt. Wird nicht der volle Vortrieb benötigt, -so werden. die Vortriebsflächen nur bis zu einer mittleren-Lage ausgeschwenkt.As can be seen from the drawing, to eliminate these disadvantages, according to the invention, special propulsion surfaces 2 are attached to the wings r of the lifting screw, which are perpendicular to the lifting screw plane and can be pivoted about axes perpendicular to the lifting screw plane. These propulsion surfaces are controlled by the - helicopter hub 3; that they have a radial and a tangenti, ale, transverse to the longitudinal axis q during the return of the respective helical wing. take up position facing the screw wing. It is advisable to allow the advancing surfaces to assume the radial position during their return movement only within a restricted sector S, which begins about 30 ° after the front reversal point and ends about 3; d ° before the rear reversal point. The air resistance of the propulsion surfaces on their orbital path is greater in the radial position than in the tangential position, and this creates a thrust in the direction of flight F, which is communicated to the missile K via the propeller attachment 3B. If the full advance is not required, - so will. the jacking surfaces are only swung out to a central position.
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEL12158A DE888959C (en) | 1952-04-22 | 1952-04-22 | Jack screw |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEL12158A DE888959C (en) | 1952-04-22 | 1952-04-22 | Jack screw |
Publications (1)
Publication Number | Publication Date |
---|---|
DE888959C true DE888959C (en) | 1953-09-07 |
Family
ID=7259090
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEL12158A Expired DE888959C (en) | 1952-04-22 | 1952-04-22 | Jack screw |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE888959C (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1134593B (en) * | 1960-11-14 | 1962-08-09 | Boelkow Entwicklungen Kg | Rotor for rotary wing aircraft |
EP0018114A1 (en) * | 1979-04-03 | 1980-10-29 | The Secretary of State for Defence in Her Britannic Majesty's Government of the United Kingdom of Great Britain and | Thrust devices |
WO2004067956A1 (en) * | 2003-01-30 | 2004-08-12 | Josef Moser | Rotor blade for a wind power station |
-
1952
- 1952-04-22 DE DEL12158A patent/DE888959C/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1134593B (en) * | 1960-11-14 | 1962-08-09 | Boelkow Entwicklungen Kg | Rotor for rotary wing aircraft |
EP0018114A1 (en) * | 1979-04-03 | 1980-10-29 | The Secretary of State for Defence in Her Britannic Majesty's Government of the United Kingdom of Great Britain and | Thrust devices |
WO2004067956A1 (en) * | 2003-01-30 | 2004-08-12 | Josef Moser | Rotor blade for a wind power station |
US7566203B2 (en) | 2003-01-30 | 2009-07-28 | Josef Moser | Rotor blade |
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