GB774396A - Improvements in or relating to helicopter rotor propulsion means - Google Patents
Improvements in or relating to helicopter rotor propulsion meansInfo
- Publication number
- GB774396A GB774396A GB11789/54A GB1178954A GB774396A GB 774396 A GB774396 A GB 774396A GB 11789/54 A GB11789/54 A GB 11789/54A GB 1178954 A GB1178954 A GB 1178954A GB 774396 A GB774396 A GB 774396A
- Authority
- GB
- United Kingdom
- Prior art keywords
- nozzles
- nozzle
- april
- duct
- rotor blade
- 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
- B64C27/04—Helicopters
- B64C27/12—Rotor drives
- B64C27/16—Drive of rotors by means, e.g. propellers, mounted on rotor blades
- B64C27/18—Drive of rotors by means, e.g. propellers, mounted on rotor blades the means being jet-reaction apparatus
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Branch Pipes, Bends, And The Like (AREA)
Abstract
774,396. Jet propelled helicopter rotors. RICHARDS, E. J. April 1, 1955 [April 23, 1954], No. 11789/54. Class 4. [Also in Groups XXVI and XXVII] A helicopter rotor blade is provided at or adjacent the trailing edge of the tip portion of the blade with an elongated narrow nozzle of fixed configuration in the form of a generally linear slot or other closed figure and means for emitting a propulsive jet from that nozzle. A rotor blade is formed with a spanwise duct 10 formed with chord wise branches 11 which terminate in nozzles 12 collectively arranged to emit a long narrow propulsive jet generated by the combustion of air from the duct 10 and fuel supplied to pipes 14 which inter-connect the nozzles. The nozzle outlets may be deflected downwardly to provide a lift component and the outlet edges of the nozzles may be corrugated to reduce noise. It is stated in the Provisional Specification that rods placed across the outlet of the nozzle assist in reducing noise. In other embodiments the nozzles have the form of circular or elliptical annular outlets from combustion chambers mounted at the tips of the rotor blades.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB11789/54A GB774396A (en) | 1954-04-23 | 1954-04-23 | Improvements in or relating to helicopter rotor propulsion means |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB11789/54A GB774396A (en) | 1954-04-23 | 1954-04-23 | Improvements in or relating to helicopter rotor propulsion means |
Publications (1)
Publication Number | Publication Date |
---|---|
GB774396A true GB774396A (en) | 1957-05-08 |
Family
ID=9992733
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB11789/54A Expired GB774396A (en) | 1954-04-23 | 1954-04-23 | Improvements in or relating to helicopter rotor propulsion means |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB774396A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3385374A (en) * | 1967-01-23 | 1968-05-28 | Oceanics Inc | Marine propeller |
US4089618A (en) * | 1974-07-02 | 1978-05-16 | Rotron Incorporated | Fan with noise reduction |
RU2748769C1 (en) * | 2020-11-09 | 2021-05-31 | Олег Леонидович Федоров | Device for jet drive of the main rotor |
WO2022112616A1 (en) * | 2020-11-30 | 2022-06-02 | Genesis Aerotech Limited | A rotor blade and pressure regulating arrangement |
-
1954
- 1954-04-23 GB GB11789/54A patent/GB774396A/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3385374A (en) * | 1967-01-23 | 1968-05-28 | Oceanics Inc | Marine propeller |
US4089618A (en) * | 1974-07-02 | 1978-05-16 | Rotron Incorporated | Fan with noise reduction |
RU2748769C1 (en) * | 2020-11-09 | 2021-05-31 | Олег Леонидович Федоров | Device for jet drive of the main rotor |
WO2022112616A1 (en) * | 2020-11-30 | 2022-06-02 | Genesis Aerotech Limited | A rotor blade and pressure regulating arrangement |
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