GB774396A - Improvements in or relating to helicopter rotor propulsion means - Google Patents

Improvements in or relating to helicopter rotor propulsion means

Info

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
Application number
GB11789/54A
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 GB11789/54A priority Critical patent/GB774396A/en
Publication of GB774396A publication Critical patent/GB774396A/en
Expired legal-status Critical Current

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.
GB11789/54A 1954-04-23 1954-04-23 Improvements in or relating to helicopter rotor propulsion means Expired GB774396A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (4)

* Cited by examiner, † Cited by third party
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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