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 controlInfo
- 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
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.
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) |
-
1974
- 1974-02-25 FR FR7406351A patent/FR2261927A1/en active Granted
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 |