GB114919A - - Google Patents

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Publication number
GB114919A
GB114919A GB114919DA GB114919A GB 114919 A GB114919 A GB 114919A GB 114919D A GB114919D A GB 114919DA GB 114919 A GB114919 A GB 114919A
Authority
GB
United Kingdom
Prior art keywords
propeller
propellers
machines
blades
belt
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.)
Active
Application number
Publication of GB114919A publication Critical patent/GB114919A/en
Active legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C27/00—Rotorcraft; Rotors peculiar thereto
    • B64C27/32—Rotors

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Retarders (AREA)
  • Non-Deflectable Wheels, Steering Of Trailers, Or Other Steering (AREA)

Abstract

114,919. Porter, J. R. May 9, 1917. Aerial machines without aerostats; steering.- Relates to aeronautical machines of the helicopter type and particularly to machines having upper and lower propellers which rotate in opposite directions, and consists in an improved construction of propellers and means for turning and controlling them. Viewed in plan, the blade of the propeller is annular. The upper propeller has two or three blades while the lower propeller has three or four blades. The two propellers are preferably driven by sun and planet gear in the manner described in Specificaticn 106,888. A hand brake n is arranged so that by braking the guided belt s, the rotation of the annular toothed wheel m and the lower propeller is retarded. By means of this belt and brake the pilot.may cause the machine to turn on its own axis. ,
GB114919D Active GB114919A (en)

Publications (1)

Publication Number Publication Date
GB114919A true GB114919A (en)

Family

ID=1709346

Family Applications (1)

Application Number Title Priority Date Filing Date
GB114919D Active GB114919A (en)

Country Status (1)

Country Link
GB (1) GB114919A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3603700A (en) * 1969-05-19 1971-09-07 Michael Eskeli Rotating circular wing

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3603700A (en) * 1969-05-19 1971-09-07 Michael Eskeli Rotating circular wing

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