SE8902616D0 - PROPELLER BLADE RETENTION SYSTEM - Google Patents

PROPELLER BLADE RETENTION SYSTEM

Info

Publication number
SE8902616D0
SE8902616D0 SE8902616A SE8902616A SE8902616D0 SE 8902616 D0 SE8902616 D0 SE 8902616D0 SE 8902616 A SE8902616 A SE 8902616A SE 8902616 A SE8902616 A SE 8902616A SE 8902616 D0 SE8902616 D0 SE 8902616D0
Authority
SE
Sweden
Prior art keywords
blade
secured
rotor
hole
shank
Prior art date
Application number
SE8902616A
Other languages
Swedish (sv)
Other versions
SE8902616L (en
Inventor
S B Elston
Original Assignee
Gen Electric
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 Gen Electric filed Critical Gen Electric
Publication of SE8902616D0 publication Critical patent/SE8902616D0/en
Publication of SE8902616L publication Critical patent/SE8902616L/en

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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
    • B64D27/00—Arrangement or mounting of power plants in aircraft; Aircraft characterised by the type or position of power plants
    • B64D27/02—Aircraft characterised by the type or position of power plants
    • B64D27/026—Aircraft characterised by the type or position of power plants comprising different types of power plants, e.g. combination of a piston engine and a gas-turbine

Landscapes

  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Support Of The Bearing (AREA)

Abstract

Variable pitch propeller blades 18 are mounted on a ring-shaped rotor 22 by means of the shank of each blade extending through a respective hole in the rotor. Each hole contains an annular shelf 58 which is fastened to the wall of the hole and surrounds each shank. Roller bearings 70, 75 sandwich the annular shelf 58 in order to connect the blade to the rotor. Pitch change movement is transmitted to a gear sector 230 via a bevel gear 235. In order to reduce pitch rigging error, sector 230 is secured to part 50 by means of a variable position key (270) (Fig 13 to 18) whereby the relative positions of parts 50 and 230 may be adjusted. An anti-clank spring (307) (Figs 20A to 20C) may be inserted in slot 308 (Fig 6) and the blade dovetail root 250 retained by a retainer 355 secured by bolts 370, 375. In an alternative arrangement (Fig. 22) the blade root is secured to the part 50 by means of a pin pass through aligned apertures in the blade and part 50. <IMAGE>
SE8902616A 1988-12-14 1989-07-28 DEVICE FOR FIXING OF PROPELLER SHEETS SE8902616L (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US28420188A 1988-12-14 1988-12-14

Publications (2)

Publication Number Publication Date
SE8902616D0 true SE8902616D0 (en) 1989-07-28
SE8902616L SE8902616L (en) 1990-06-15

Family

ID=23089270

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8902616A SE8902616L (en) 1988-12-14 1989-07-28 DEVICE FOR FIXING OF PROPELLER SHEETS

Country Status (9)

Country Link
JP (1) JPH02179598A (en)
KR (1) KR900009391A (en)
CN (1) CN1043479A (en)
BE (1) BE1003122A5 (en)
DE (1) DE3926247A1 (en)
FR (1) FR2640227A1 (en)
GB (1) GB2226087A (en)
IT (1) IT1231048B (en)
SE (1) SE8902616L (en)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE502207C2 (en) * 1992-10-14 1995-09-18 Flaekt Ab Angle adjustable paddle suspension
FR2862609B1 (en) * 2003-11-21 2007-03-09 Roulements Soc Nouvelle DEVICE FOR MOUNTING A BLADE WITH VARIABLE INCIDENCE ANGLE
CA2706068A1 (en) * 2007-11-01 2009-05-07 Windurance Llc System and method for controlling a turbine blade
FR2933955B1 (en) * 2008-07-18 2010-09-03 Snecma DEVICE FOR ATTACHING A VARIABLE SHIFT BLADE
FR2951435B1 (en) * 2009-10-15 2012-02-03 Snecma DEVICE ADAPTED TO BE PROVIDED WITH PROPELLER BLADES
FR2953487B1 (en) * 2009-12-07 2011-11-18 Snecma PROPELLER HUB WITH REINFORCED POLYGON RING AND TURBOMACHINE EQUIPPED WITH SUCH HUB.
WO2011069981A1 (en) * 2009-12-07 2011-06-16 Snecma Propeller hub having a reinforced polygonal ring and turbine engine provided with such a hub
FR2953486B1 (en) * 2009-12-07 2011-11-18 Snecma PROPELLER HUB WITH FULL POLYGON RING AND TURBOMACHINE EQUIPPED WITH SUCH HUB
FR2958621B1 (en) * 2010-04-09 2012-03-23 Snecma NON-CARRIED PROPELLER FOR TURBOMACHINE.
FR2996592B1 (en) * 2012-10-10 2014-12-19 Snecma PROPELLER COMPRISING A DYNAMIC MOBILE ECOPE
US9869190B2 (en) 2014-05-30 2018-01-16 General Electric Company Variable-pitch rotor with remote counterweights
US10072510B2 (en) 2014-11-21 2018-09-11 General Electric Company Variable pitch fan for gas turbine engine and method of assembling the same
US20160290228A1 (en) * 2015-04-06 2016-10-06 General Electric Company Fan bearings for a turbine engine
JP6285500B2 (en) * 2015-07-08 2018-02-28 ジーイー・アビエイション・システムズ・エルエルシー Pitch control assembly, propeller assembly and method for adjusting pitch
US10100653B2 (en) 2015-10-08 2018-10-16 General Electric Company Variable pitch fan blade retention system
US11674435B2 (en) 2021-06-29 2023-06-13 General Electric Company Levered counterweight feathering system
US11795964B2 (en) 2021-07-16 2023-10-24 General Electric Company Levered counterweight feathering system

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB426696A (en) * 1933-10-20 1935-04-08 An Alfa Romeo Soc Improvements in or relating to variable pitch screw-propellers
GB451518A (en) * 1935-03-08 1936-08-07 Albert George Elliott Improvements in variable pitch airscrews
GB485102A (en) * 1936-11-13 1938-05-13 Arthur Frederick Evans Improvements in variable-pitch airscrews for aircraft
GB485982A (en) * 1937-01-06 1938-05-27 Ver Deutsche Metallwerke Ag Improvements in or relating to mountings for the blade roots of variable pitch propellers
GB485978A (en) * 1937-01-09 1938-05-27 Ver Deutsche Metallwerke Ag Improvements in or relating to variable pitch propellers
GB825303A (en) * 1957-04-15 1959-12-16 Rotol Ltd Improvements in or relating to variable pitch propellers
US4863352A (en) * 1984-11-02 1989-09-05 General Electric Company Blade carrying means
GB2192943A (en) * 1986-07-26 1988-01-27 Rolls Royce Plc A variable pitch blade assembly

Also Published As

Publication number Publication date
JPH02179598A (en) 1990-07-12
BE1003122A5 (en) 1991-12-03
SE8902616L (en) 1990-06-15
DE3926247A1 (en) 1990-06-21
GB2226087A (en) 1990-06-20
IT8921835A0 (en) 1989-09-26
FR2640227A1 (en) 1990-06-15
CN1043479A (en) 1990-07-04
IT1231048B (en) 1991-11-12
KR900009391A (en) 1990-07-04
GB8918334D0 (en) 1989-09-20

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Legal Events

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Effective date: 19930201