GB546621A - Improvements in or relating to variable-pitch airscrews - Google Patents

Improvements in or relating to variable-pitch airscrews

Info

Publication number
GB546621A
GB546621A GB1789340A GB1789340A GB546621A GB 546621 A GB546621 A GB 546621A GB 1789340 A GB1789340 A GB 1789340A GB 1789340 A GB1789340 A GB 1789340A GB 546621 A GB546621 A GB 546621A
Authority
GB
United Kingdom
Prior art keywords
ring
blade
pitch
sleeve
variable
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
GB1789340A
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 GB1789340A priority Critical patent/GB546621A/en
Publication of GB546621A publication Critical patent/GB546621A/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
    • B64C11/02—Hub construction
    • B64C11/04—Blade mountings
    • B64C11/06—Blade mountings for variable-pitch blades

Abstract

546,621. Screw propellers. FAIRHURST, L. G. Dec. 19, 1940, No. 17893. [Class 114] In a blade-mounting for a variable-pitch airscrew, the blade-root 10 is formed with conical and cylindrical portions 12, 11 engaging corresponding portions of a two-part sleeve 13 which is clamped to the portion 11, the arrangement enabling the sleeve to carry the centrifugal and bending loads on the blade. The portion 12 may be formed by an upsetting operation. Preferably, the sleeve is formed with a longitudinal slit 14 having serrations 21, and is bound at the top by a divided ring 18 provided with a tightening-bolt 19, and at the bottom by a flanged ring 16. The surfaces 12, 15 are held in tight engagement by a ring 22 which is screwed into the ring 16. The ring 16 may be provided with a pin 25 in connection with a pitch-changing motor. The pitch can be initially adjusted, without disturbing the motor-connections, by slackening the ring 18 and turning the blade.
GB1789340A 1940-12-19 1940-12-19 Improvements in or relating to variable-pitch airscrews Expired GB546621A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1789340A GB546621A (en) 1940-12-19 1940-12-19 Improvements in or relating to variable-pitch airscrews

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1789340A GB546621A (en) 1940-12-19 1940-12-19 Improvements in or relating to variable-pitch airscrews

Publications (1)

Publication Number Publication Date
GB546621A true GB546621A (en) 1942-07-22

Family

ID=10103078

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1789340A Expired GB546621A (en) 1940-12-19 1940-12-19 Improvements in or relating to variable-pitch airscrews

Country Status (1)

Country Link
GB (1) GB546621A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4705454A (en) * 1983-06-09 1987-11-10 Societe Nationale D'etude Et De Construction De Moteurs D'aviation Turbomachine casing with containment structure intended to contain fractured rotating parts
US5015150A (en) * 1988-05-31 1991-05-14 Mtu Munchen Gmbh Arrangement for mounting a pivotable propfan blade
JP2013001394A (en) * 2011-06-14 2013-01-07 Rolls Royce Plc Mounting system
FR3046403A1 (en) * 2016-01-05 2017-07-07 Snecma ADJUSTABLE ORIENTATION BLADE PIVOT FOR TURBOMACHINE BLOWER HUB
WO2021116566A1 (en) * 2019-12-11 2021-06-17 Safran Aircraft Engines Improvement in the radial locking of a blade pivot with adjustable orientation for a turbomachine fan hub

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4705454A (en) * 1983-06-09 1987-11-10 Societe Nationale D'etude Et De Construction De Moteurs D'aviation Turbomachine casing with containment structure intended to contain fractured rotating parts
US5015150A (en) * 1988-05-31 1991-05-14 Mtu Munchen Gmbh Arrangement for mounting a pivotable propfan blade
JP2013001394A (en) * 2011-06-14 2013-01-07 Rolls Royce Plc Mounting system
EP2535518A3 (en) * 2011-06-14 2014-11-12 Rolls-Royce plc Blade mounting system
US8985946B2 (en) 2011-06-14 2015-03-24 Rolls-Royce Plc Mounting system
FR3046403A1 (en) * 2016-01-05 2017-07-07 Snecma ADJUSTABLE ORIENTATION BLADE PIVOT FOR TURBOMACHINE BLOWER HUB
WO2017118808A1 (en) * 2016-01-05 2017-07-13 Safran Aircraft Engines Pivot for blade with adjustable orientation for hub of a turbomachine fan
CN108473193A (en) * 2016-01-05 2018-08-31 赛峰飞机发动机公司 The pivot of variable orientation blade for turbogenerator fan hub
US10730608B2 (en) 2016-01-05 2020-08-04 Safran Aircraft Engines Variable pitch blade pivot for a turbine engine fan hub
CN108473193B (en) * 2016-01-05 2021-09-21 赛峰飞机发动机公司 Pivot for variable orientation blades of a turbine engine fan hub
WO2021116566A1 (en) * 2019-12-11 2021-06-17 Safran Aircraft Engines Improvement in the radial locking of a blade pivot with adjustable orientation for a turbomachine fan hub
FR3104540A1 (en) * 2019-12-11 2021-06-18 Safran Aircraft Engines Improvement in the radial locking of an adjustable orientation blade pivot for a turbomachine fan hub

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