IL46508A - Rotor blade for helicopters - Google Patents

Rotor blade for helicopters

Info

Publication number
IL46508A
IL46508A IL46508A IL4650875A IL46508A IL 46508 A IL46508 A IL 46508A IL 46508 A IL46508 A IL 46508A IL 4650875 A IL4650875 A IL 4650875A IL 46508 A IL46508 A IL 46508A
Authority
IL
Israel
Prior art keywords
blade
spar
rotor blade
angle
major axis
Prior art date
Application number
IL46508A
Other languages
English (en)
Other versions
IL46508A0 (en
Original Assignee
United Aircraft Corp
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 United Aircraft Corp filed Critical United Aircraft Corp
Publication of IL46508A0 publication Critical patent/IL46508A0/xx
Publication of IL46508A publication Critical patent/IL46508A/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C27/00—Rotorcraft; Rotors peculiar thereto
    • B64C27/32—Rotors
    • B64C27/33—Rotors having flexing arms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C27/00—Rotorcraft; Rotors peculiar thereto
    • B64C27/32—Rotors
    • B64C27/46—Blades
    • B64C27/473—Constructional features
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S416/00—Fluid reaction surfaces, i.e. impellers
    • Y10S416/02—Formulas of curves

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Wind Motors (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Hydraulic Turbines (AREA)
  • Toys (AREA)
IL46508A 1974-04-08 1975-01-26 Rotor blade for helicopters IL46508A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US458926A US3874820A (en) 1974-04-08 1974-04-08 Hingeless in-plane rotor blade design

Publications (2)

Publication Number Publication Date
IL46508A0 IL46508A0 (en) 1975-06-25
IL46508A true IL46508A (en) 1977-07-31

Family

ID=23822654

Family Applications (1)

Application Number Title Priority Date Filing Date
IL46508A IL46508A (en) 1974-04-08 1975-01-26 Rotor blade for helicopters

Country Status (9)

Country Link
US (1) US3874820A (ref)
JP (1) JPS5828160B2 (ref)
BR (1) BR7501444A (ref)
CA (1) CA1013332A (ref)
DE (1) DE2502004C2 (ref)
FR (1) FR2266632B1 (ref)
GB (1) GB1485683A (ref)
IL (1) IL46508A (ref)
IT (1) IT1034426B (ref)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3999886A (en) * 1974-10-10 1976-12-28 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Hingeless helicopter rotor with improved stability
US4037988A (en) * 1974-11-25 1977-07-26 The Boeing Company Flexure having pitch flap coupling
US4008980A (en) * 1975-06-26 1977-02-22 United Technologies Corporation Composite helicopter spar and means to alleviate stress concentration
US4028003A (en) * 1976-04-12 1977-06-07 United Technologies Corporation Torsionally compliant helicopter rotor blade with improved stability and performance characteristics
US4087203A (en) * 1977-01-07 1978-05-02 United Technologies Corporation Cross beam rotor
US4275994A (en) * 1978-04-03 1981-06-30 Textron, Inc. Roll formed blade structure
FR2430354A1 (fr) * 1978-07-07 1980-02-01 Aerospatiale Helice multipale a pas variable d'un type simplifie
US4244677A (en) * 1978-07-12 1981-01-13 United Technologies Corporation Cross-beam helicopter rotor with readily replaceable snubber
US4349316A (en) * 1979-04-24 1982-09-14 Textron, Inc. Twist control for helicopter tail rotor pitch change
US4366387A (en) * 1979-05-10 1982-12-28 Carter Wind Power Wind-driven generator apparatus and method of making blade supports _therefor
US4304694A (en) * 1979-12-03 1981-12-08 United Technologies Corporation High damping epoxy resin composite
US4332525A (en) * 1979-12-03 1982-06-01 United Technologies Corporation Matched stiffness rotor flexbeam and blade system
US4323332A (en) * 1979-12-21 1982-04-06 United Technologies Corporation Hingeless helicopter rotor with elastic gimbal hub
DE69332527T2 (de) * 1992-06-22 2003-08-21 United Technologies Corp., Stratford Antriebsstranganordnung für unbemanntes Fluggerät
US5364230A (en) * 1992-06-22 1994-11-15 United Technologies Corporation Rotor blade subassembly for a rotor assembly having ducted, coaxial counter-rotating rotors
US5320494A (en) * 1992-12-22 1994-06-14 United Technologies Corporation Helicopter rotor blade having a replaceable anhedral tip
US6024325A (en) * 1997-01-09 2000-02-15 Cartercopters, Llc Rotor for rotary wing aircraft
US6659722B2 (en) * 2001-05-07 2003-12-09 Bell Helicopter Textron, Inc. Composite rotor blade and method of manufacture
US8360721B2 (en) * 2008-01-08 2013-01-29 The Boeing Company Low maintenance stiff in plane gimbaled rotor head
US10442531B2 (en) 2015-08-18 2019-10-15 Sikorsky Aircraft Corporation Rotor damping

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2152861A (en) * 1934-05-16 1939-04-04 Autogiro Co Of America Blade construction for aircraft sustaining rotors
US2111975A (en) * 1935-12-19 1938-03-22 Autogiro Co Of America Rotative-winged aircraft
US2272439A (en) * 1939-12-16 1942-02-10 Autogiro Co Of America Aircraft sustaining rotor blade
US3232349A (en) * 1964-12-02 1966-02-01 Enstrom Corp Rotor system utilizing centrifugal deflection of non-radial blades
US3310117A (en) * 1966-04-08 1967-03-21 Parsons Corp Helicopter spar having integral mass and stiffness control provisions
US3494424A (en) * 1967-12-11 1970-02-10 Autogiro Co Of America Aircraft sustaining rotor system and rotor blade therefor
US3484174A (en) * 1968-04-08 1969-12-16 Kaman Corp Rotary wing system
GB1214858A (en) * 1968-05-20 1970-12-09 Westland Aircraft Ltd Improvements in or relating to the construction of rotor blades for rotary wing aircraft
US3647317A (en) * 1970-03-19 1972-03-07 Fluor Prod Co Inc Fiberglass fan assembly
CA951301A (en) * 1971-04-08 1974-07-16 United Aircraft Corporation Helicopter rotor system
US3813186A (en) * 1972-10-10 1974-05-28 Textron Inc Rotor blade shear reinforcement

Also Published As

Publication number Publication date
JPS5828160B2 (ja) 1983-06-14
FR2266632B1 (ref) 1978-07-13
DE2502004A1 (de) 1975-10-16
IL46508A0 (en) 1975-06-25
BR7501444A (pt) 1976-11-30
IT1034426B (it) 1979-09-10
DE2502004C2 (de) 1984-05-10
JPS50154999A (ref) 1975-12-13
AU7750775A (en) 1976-07-22
US3874820A (en) 1975-04-01
FR2266632A1 (ref) 1975-10-31
GB1485683A (en) 1977-09-14
CA1013332A (en) 1977-07-05

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