GB434567A - Improvements in or relating to the arrangement of propellers and more particularly of variable pitch propellers - Google Patents

Improvements in or relating to the arrangement of propellers and more particularly of variable pitch propellers

Info

Publication number
GB434567A
GB434567A GB2729334A GB2729334A GB434567A GB 434567 A GB434567 A GB 434567A GB 2729334 A GB2729334 A GB 2729334A GB 2729334 A GB2729334 A GB 2729334A GB 434567 A GB434567 A GB 434567A
Authority
GB
United Kingdom
Prior art keywords
propellers
blade
cams
engaging
cylinder
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
GB2729334A
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.)
AUGUSTE RENE BALLU
Original Assignee
AUGUSTE RENE BALLU
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 AUGUSTE RENE BALLU filed Critical AUGUSTE RENE BALLU
Priority to GB2729334A priority Critical patent/GB434567A/en
Publication of GB434567A publication Critical patent/GB434567A/en
Expired legal-status Critical Current

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
    • B64C11/30—Blade pitch-changing mechanisms
    • B64C11/32—Blade pitch-changing mechanisms mechanical
    • B64C11/34—Blade pitch-changing mechanisms mechanical automatic
    • B64C11/346—Blade pitch-changing mechanisms mechanical automatic actuated by the centrifugal force or the aerodynamic drag acting on auxiliary masses or surfaces

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Hydraulic Motors (AREA)

Abstract

434,567. Screw propellers. BALLU, A. R., 4, Avenue de Villars, Paris. Sept. 22, 1934, No. 27293. [Class 114] Each blade of an airscrew is connected to the boss by an aligned piston 2 and cylinder 1 with an interposed fluid F which takes the imposed centrifugal force. The fluid spaces of the blades may be connected by a channel 8 in which is a valve member 10 leading to a discharge duct 9 when the pressures are unbalanced. A multiple arrangement of pistons and cylinders may be provided for each blade by forming the cylinder 1 with partitions 4<a>, 4b and the piston with heads 2<a>, 2b, 2<c>, the rod 3 being hollow and having ports 6<a>, 6b, 6<c>. Each blade root has a worm wheel 22<c> engaging a worm 102 on a shaft carrying a planet wheel 99 engaging in turn sun-wheels 100<a>, 100b which are rigid with drums having locking brakes 104<a>, 104b. The brakes are two part members pivoted respectively at 105a, 105<b> and jaws 106<a>, 106<b> in which the cams 107a, 107b are disposed. These cams are carried by a shaft 108 to which the control rod 109 is secured.
GB2729334A 1934-09-22 1934-09-22 Improvements in or relating to the arrangement of propellers and more particularly of variable pitch propellers Expired GB434567A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2729334A GB434567A (en) 1934-09-22 1934-09-22 Improvements in or relating to the arrangement of propellers and more particularly of variable pitch propellers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2729334A GB434567A (en) 1934-09-22 1934-09-22 Improvements in or relating to the arrangement of propellers and more particularly of variable pitch propellers

Publications (1)

Publication Number Publication Date
GB434567A true GB434567A (en) 1935-09-04

Family

ID=10257223

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2729334A Expired GB434567A (en) 1934-09-22 1934-09-22 Improvements in or relating to the arrangement of propellers and more particularly of variable pitch propellers

Country Status (1)

Country Link
GB (1) GB434567A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2422966A (en) * 1941-03-14 1947-06-24 Hoover Walter Scott Propeller control
US2423400A (en) * 1941-06-06 1947-07-01 Harry J Nichols Propeller

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2422966A (en) * 1941-03-14 1947-06-24 Hoover Walter Scott Propeller control
US2423400A (en) * 1941-06-06 1947-07-01 Harry J Nichols Propeller

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