GB496502A - Improvements in helicopters - Google Patents

Improvements in helicopters

Info

Publication number
GB496502A
GB496502A GB17488/37A GB1748837A GB496502A GB 496502 A GB496502 A GB 496502A GB 17488/37 A GB17488/37 A GB 17488/37A GB 1748837 A GB1748837 A GB 1748837A GB 496502 A GB496502 A GB 496502A
Authority
GB
United Kingdom
Prior art keywords
rotor
hub
pitch angle
sleeves
driven
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
GB17488/37A
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 GB17488/37A priority Critical patent/GB496502A/en
Publication of GB496502A publication Critical patent/GB496502A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C39/00—Aircraft not otherwise provided for
    • B64C39/02—Aircraft not otherwise provided for characterised by special use
    • B64C39/022—Tethered aircraft
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64U—UNMANNED AERIAL VEHICLES [UAV]; EQUIPMENT THEREFOR
    • B64U10/00—Type of UAV
    • B64U10/10—Rotorcrafts
    • B64U10/17—Helicopters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64U—UNMANNED AERIAL VEHICLES [UAV]; EQUIPMENT THEREFOR
    • B64U10/00—Type of UAV
    • B64U10/60—Tethered aircraft
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64U—UNMANNED AERIAL VEHICLES [UAV]; EQUIPMENT THEREFOR
    • B64U2101/00—UAVs specially adapted for particular uses or applications
    • B64U2101/15—UAVs specially adapted for particular uses or applications for conventional or electronic warfare
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64U—UNMANNED AERIAL VEHICLES [UAV]; EQUIPMENT THEREFOR
    • B64U2101/00—UAVs specially adapted for particular uses or applications
    • B64U2101/30—UAVs specially adapted for particular uses or applications for imaging, photography or videography
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64U—UNMANNED AERIAL VEHICLES [UAV]; EQUIPMENT THEREFOR
    • B64U30/00—Means for producing lift; Empennages; Arrangements thereof
    • B64U30/20—Rotors; Rotor supports
    • B64U30/29—Constructional aspects of rotors or rotor supports; Arrangements thereof
    • B64U30/291—Detachable rotors or rotor supports
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64U—UNMANNED AERIAL VEHICLES [UAV]; EQUIPMENT THEREFOR
    • B64U50/00—Propulsion; Power supply
    • B64U50/10—Propulsion
    • B64U50/11—Propulsion using internal combustion piston engines

Landscapes

  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Remote Sensing (AREA)
  • Toys (AREA)

Abstract

496,502. Helicopters. HAMMOND, E. V. June 23, 1937, No. 17488. [Class 4] Relates to driving means for helicopters of the kind in which vanishing of the torque impressed on the rotor causes reduction in rotor blade pitch angle. A helicopter is fitted with a single rotor comprising blades m, Fig. 1, connected by flapping pivots to sleeve members k carried by a hub i either of spoke or of disc form freely rotatable on a shaft c. The rotor hub is driven by links n, Fig. 5, pivotally connected at one end to lever arms k<3> formed on the members k, which members are rotatably secured to the hub, and at the other end to a gear wheel d freely rotatable on shaft c and adapted to be driven by engine n through a free-wheel device and if desired a clutch. Rotation of sleeves k is limited by stops j<2>, j<3> on the hub i which co-operate with abutments k<4>, k5 on the sleeve. The stops define the maximum and minimum pitch angle positions of the blades. The arrangement is such that when gear d is driven by the engine sleeves k are rotated to maximum pitch angle position whilst when the rotor over-runs the gear d the sleeves k are forced by links n to the dotted line position of Fig. 5 corresponding to an autorotational valve of pitch angle. The lenth of link n and the positions of the stops may be adjustable. A fin b and tail-plane s incorporating trimming flaps are provided. The helicopter described is primarily intended to be flown anchored and to carry out the functions of a kite balloon. The machine need not carry a crew and may be used to carry a television camera to permit an observer on the ground to scan enemy country in time of war. Anchoring and stabilizing means comprise a cable q, Fig. 8, connected to a winding drum r and divided at the upper end into wires q<1> connected to the ends of laterally extending outriggers p and a wire q<2> (not shown) connected to the tail of the machine and adjustable in length. An electric motor may be employed for driving the rotor, receiving energy from a source on the ground.
GB17488/37A 1937-06-23 1937-06-23 Improvements in helicopters Expired GB496502A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB17488/37A GB496502A (en) 1937-06-23 1937-06-23 Improvements in helicopters

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB17488/37A GB496502A (en) 1937-06-23 1937-06-23 Improvements in helicopters

Publications (1)

Publication Number Publication Date
GB496502A true GB496502A (en) 1938-12-01

Family

ID=10096042

Family Applications (1)

Application Number Title Priority Date Filing Date
GB17488/37A Expired GB496502A (en) 1937-06-23 1937-06-23 Improvements in helicopters

Country Status (1)

Country Link
GB (1) GB496502A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2433344A (en) * 1943-05-29 1947-12-30 Rca Corp Aeronautic positioning device
US2471544A (en) * 1945-03-30 1949-05-31 United Aircraft Corp Means for connecting mooring cables to rotary winged aircraft
US3176288A (en) * 1957-08-29 1965-03-30 Wyatt Theodore System for extending the range of a search radar
FR3031498A1 (en) * 2015-01-12 2016-07-15 Mircher Charles Henry SYSTEM OF BLADES FOR HELICOPTER AND CIVIL AND MILITARY DRONE

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2433344A (en) * 1943-05-29 1947-12-30 Rca Corp Aeronautic positioning device
US2471544A (en) * 1945-03-30 1949-05-31 United Aircraft Corp Means for connecting mooring cables to rotary winged aircraft
US3176288A (en) * 1957-08-29 1965-03-30 Wyatt Theodore System for extending the range of a search radar
FR3031498A1 (en) * 2015-01-12 2016-07-15 Mircher Charles Henry SYSTEM OF BLADES FOR HELICOPTER AND CIVIL AND MILITARY DRONE

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