GB619694A - Improvements in or relating to rotor blades - Google Patents

Improvements in or relating to rotor blades

Info

Publication number
GB619694A
GB619694A GB21269/46A GB2126946A GB619694A GB 619694 A GB619694 A GB 619694A GB 21269/46 A GB21269/46 A GB 21269/46A GB 2126946 A GB2126946 A GB 2126946A GB 619694 A GB619694 A GB 619694A
Authority
GB
United Kingdom
Prior art keywords
leading edge
matter
subject
spar
wooden
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
GB21269/46A
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.)
Raytheon Technologies Corp
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 GB619694A publication Critical patent/GB619694A/en
Expired legal-status Critical Current

Links

Classifications

    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Wind Motors (AREA)

Abstract

619,694. Helicopters. UNITED AIRCRAFT CORPORATION. July 16, 1946, No. 21269. Convention date, Dec. 4, 1945. Addition to 586,443. [Class 4] The hollow leading edge member 102 of the helicopter rotor blade described in the parent Specification is so proportioned that its centre of gravity lies on the feathering axis 113 disposed near the quarter-chord point. The nose portion 112 of the member 102 is thickened to provide additional strength. In order to fix the blade tip in position a wooden spar 160, Fig. 7, projects into the space between the webs 110 and is secured by rivets. A wooden shaping block 167 may be provided for the leading edge portion of the blade tip. Fig. 9 shows a form of spar having a groove 202 in the leading edge for the reception of a de-icing heater wire. The Specification as open to inspection under Sect. 91 describes also the subject-matter of the parent Specification. This subject-matter does not appear in the Specification as accepted.
GB21269/46A 1945-12-04 1946-07-16 Improvements in or relating to rotor blades Expired GB619694A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US619694XA 1945-12-04 1945-12-04

Publications (1)

Publication Number Publication Date
GB619694A true GB619694A (en) 1949-03-14

Family

ID=22039361

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21269/46A Expired GB619694A (en) 1945-12-04 1946-07-16 Improvements in or relating to rotor blades

Country Status (1)

Country Link
GB (1) GB619694A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2754918A (en) * 1950-09-21 1956-07-17 United Aircraft Corp Weighted blade for rotary wing aircraft
DE955113C (en) * 1952-12-14 1956-12-27 United Aircraft Corp Rotor wing spar with an extruded tubular part
DE976603C (en) * 1952-12-14 1964-04-09 United Aircraft Corp A wing designed for a rotary wing aircraft
US3219123A (en) * 1963-03-29 1965-11-23 Bolkow Gmbh Airfoil construction and method of making an airfoil
EP3360778A1 (en) * 2017-02-08 2018-08-15 The Boeing Company Aerodynamic control surface and associated trailing edge close-out method

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2754918A (en) * 1950-09-21 1956-07-17 United Aircraft Corp Weighted blade for rotary wing aircraft
DE955113C (en) * 1952-12-14 1956-12-27 United Aircraft Corp Rotor wing spar with an extruded tubular part
DE976603C (en) * 1952-12-14 1964-04-09 United Aircraft Corp A wing designed for a rotary wing aircraft
US3219123A (en) * 1963-03-29 1965-11-23 Bolkow Gmbh Airfoil construction and method of making an airfoil
EP3360778A1 (en) * 2017-02-08 2018-08-15 The Boeing Company Aerodynamic control surface and associated trailing edge close-out method
US10532804B2 (en) 2017-02-08 2020-01-14 The Boeing Company Aerodynamic control surface and associated trailing edge close-out method

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