FR2261927A1 - Collective pitch control device for helicopters - primary and secondary compensators for manual control - Google Patents

Collective pitch control device for helicopters - primary and secondary compensators for manual control

Info

Publication number
FR2261927A1
FR2261927A1 FR7406351A FR7406351A FR2261927A1 FR 2261927 A1 FR2261927 A1 FR 2261927A1 FR 7406351 A FR7406351 A FR 7406351A FR 7406351 A FR7406351 A FR 7406351A FR 2261927 A1 FR2261927 A1 FR 2261927A1
Authority
FR
France
Prior art keywords
compensators
manual
collective pitch
control
pitch control
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.)
Granted
Application number
FR7406351A
Other languages
French (fr)
Other versions
FR2261927B1 (en
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.)
SCEMM
Original Assignee
SCEMM
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 SCEMM filed Critical SCEMM
Priority to FR7406351A priority Critical patent/FR2261927A1/en
Publication of FR2261927A1 publication Critical patent/FR2261927A1/en
Application granted granted Critical
Publication of FR2261927B1 publication Critical patent/FR2261927B1/fr
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C27/00—Rotorcraft; Rotors peculiar thereto
    • B64C27/54—Mechanisms for controlling blade adjustment or movement relative to rotor head, e.g. lag-lead movement
    • B64C27/78—Mechanisms for controlling blade adjustment or movement relative to rotor head, e.g. lag-lead movement in association with pitch adjustment of blades of anti-torque rotor

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

When a helicopter is in flight near the ground, the pilot may act upon the blade pitch and carry out corrections different to those which would be carried out by compensators, but when at altitude the pilot may safely abandon manual control in favour of automatic control by the compensators. These improvements are due to (1) a compensator actuator in which a hole is bored through the piston causing a loss in the force acting upon the piston which is connected to the manual control (2). A manual collective pitch control for both main and tail rotors, not dependent upon the aircraft engines (3). Primary compensators for assisting manual collective pitch control of the main rotor and secondary compensators for assisting manual tail rotor collective pitch control of the main rotor and secondary compensators for assisting manual tail rotor collective pitch control, both being sensitive to the pressure of a fluid from a pump driven by the helicopter engine.
FR7406351A 1974-02-25 1974-02-25 Collective pitch control device for helicopters - primary and secondary compensators for manual control Granted FR2261927A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7406351A FR2261927A1 (en) 1974-02-25 1974-02-25 Collective pitch control device for helicopters - primary and secondary compensators for manual control

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7406351A FR2261927A1 (en) 1974-02-25 1974-02-25 Collective pitch control device for helicopters - primary and secondary compensators for manual control

Publications (2)

Publication Number Publication Date
FR2261927A1 true FR2261927A1 (en) 1975-09-19
FR2261927B1 FR2261927B1 (en) 1976-06-25

Family

ID=9135411

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7406351A Granted FR2261927A1 (en) 1974-02-25 1974-02-25 Collective pitch control device for helicopters - primary and secondary compensators for manual control

Country Status (1)

Country Link
FR (1) FR2261927A1 (en)

Also Published As

Publication number Publication date
FR2261927B1 (en) 1976-06-25

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Legal Events

Date Code Title Description
ST Notification of lapse