JPH0449038Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a power control device for an aircraft.
In particular, the present invention relates to a control sensation imparting device in a power control system of an aircraft.

[Prior art]

A power control system for an aircraft includes a hydraulic actuator for moving an aircraft control surface, and hydraulic pressure is supplied to the actuator from a hydraulic pump via a pressure line. Hydraulic pumps draw working fluid from a pressurized reservoir, increase the pressure, and send it to a pressure line. A manually operated member, such as a control culm, is coupled to a valve mechanism associated with the actuator and provides hydraulic pressure to the actuator in response to operation of the manually operated member. A return line leading to the reservoir is connected to the valve mechanism. In order to impart a steering sensation to the manual steering member, the steering member is provided with a steering sensation imparting device configured to hydraulically apply back pressure to the operation.

In the conventional configuration, the return line of this steering sensation imparting device is connected to the middle of the return line of the actuator. In this traditional configuration,
A problem arises in that when sudden steering is performed, the back pressure applied by the steering sensation imparting device appears to decrease. That is, when sudden steering is performed, a relatively large amount of hydraulic fluid is discharged from the actuator to the return line. For this reason,
The pressure in the return line increases instantaneously, and this pressure increase is transmitted to the steering sensation imparting device. This increase in pressure in the return line in the steering sensation imparting device causes a relative decrease in the back pressure provided by the steering sensation imparting device, and the imparted steering sensation is correspondingly weakened, leading to excessive steering. Such dangers may arise.

[The problem that the idea aims to solve]

An object of the present invention is to solve the above-mentioned problem that the control feeling is weakened during sudden steering in the conventional control sense imparting device for the power control system of an aircraft.

[Means to solve the problem]

In order to solve the above problems, in this invention,
The return line of the steering sensation imparting device is separated from the return line of the actuator and connected to the reservoir independently. That is, the control sensation imparting device of the present invention includes a pressure line for supplying liquid pressure for steering to an actuator provided in a flight control system of an aircraft, a pressurized reservoir, and a device for sucking liquid from the pressurized reservoir. a hydraulic pump that increases pressure and supplies the pressure to the pressure line; a manual control member that is manually operable and controls the actuator by its operation; and a manual control member that is provided on the manual control member to impart a sense of control to the manual control member. and an auxiliary hydraulic pressure system that provides a back pressure of Features.

[Effect]

According to the above configuration of the present invention, even when the amount of liquid discharged from the actuator increases due to sudden steering, an increase in pressure in the return line of the steering sensation imparting device can be prevented. Therefore, the back pressure applied to the manual control member by the control sensation imparting device is not relatively reduced;
Stable steering becomes possible.

〔Example〕

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
In the figure, a control rudder 1 of an aircraft is rotatably mounted around a hinge shaft 2, and a hydraulic actuator 3 is connected to the rudder 1. The actuator 3 is provided with a switching valve (not shown), and a pressure line 4 for supplying hydraulic pressure and a return line 5 are connected to this valve. pressure line 4
is provided with a hydraulic pump 6 which draws hydraulic fluid from a pressurized reservoir 8 via a suction line 7.

The pressurized reservoir 8 has a piston 9 inside,
A pressurized liquid chamber 10 is formed below the piston 9. Piston rod 11 downward from piston 9
The piston rod 11 extends downwardly through the liquid chamber 10 and is inserted into a pressurizing cylinder 12 provided below the liquid chamber 10. piston rod 11
A second piston 13 is provided at the lower end of the second piston 13.
Piston 13 slides within cylinder 12. A pressurizing liquid chamber 14 is formed in the cylinder 12 above the piston 13 . Pressure line 4 is connected to liquid chamber 14 via branch line 4a. With this configuration, the piston 9 is urged downward, and the liquid chamber 10
The hydraulic fluid inside is pre-pressurized.

In order to operate the valve of the actuator 3, a manual control member 15, such as a control culm, is provided. The manual operation member 15 is rotatably attached around a shaft 16, and is attached to the actuator 3 as shown by the dotted line in the figure.
connected to the valve. Therefore, the control member 1
5 controls the valve of the actuator 3. The crank arm 15 is attached to the lower end of the operating member 15.
A is provided. The steering sensation imparting device 17 is Q
It is composed of a fill cylinder 18. A piston 19 is disposed within the Q-feel cylinder 18, and a crank arm 15a of the manual operation member 15 is connected to a piston rod 20 of the piston 19. Inside the Q-feel cylinder 18, a hydraulic pressure chamber 21 is formed on the piston rod 20 side of the piston 19, and a low pressure chamber 22 is formed on the opposite side.

A hydraulic pressure generating device 23 is provided to generate the hydraulic pressure supplied to the hydraulic pressure chamber 21 of the Q-feel cylinder 18 . This hydraulic pressure generating device 23 is a device of a type that generates a hydraulic pressure according to the pitot pressure, and a branch line 4b branched from the pressure line 4 and a pitot pressure line 24 are connected to the device 23. Q
The hydraulic chamber 21 of the fill cylinder 18 is connected to a hydraulic pressure generating device 23 via a pressure line 25 . The low pressure chamber 22 is connected to a return line 26 of the steering sensation imparting device 17. As shown in the figure, the return line 5 of the actuator 3 connects directly to the reservoir 8.
It is connected to the liquid chamber 10 of. Similarly, the return line 26 of the steering sensation imparting device 17 is also directly connected to the liquid chamber 10 of the reservoir 8, independently of the return line 5.

When the manual control member 15 is operated, the arm 15
The piston rod 20 is drawn by the force a, and the piston 19 is moved to the left in the figure. At this time, the hydraulic pressure within the hydraulic pressure chamber 21 provides resistance to the movement of the piston 19, and this resistance is felt by the operator as a steering sensation. When steering is performed suddenly, a large amount of hydraulic fluid is discharged from the actuator 3, but the discharged hydraulic fluid is directly returned to the fluid chamber 10 of the reservoir 8 via the return line 5, so that the steering sensation is improved. The pressure in the return line 26 of the applicator 17 is not affected.

〔effect〕

As described above, in the present invention, since the return line of the steering sensation imparting device is provided independently of the return line of the steering actuator, even when sudden steering is performed, the steering sensation imparting device There is no pressure rise in the return line of
There is no change in the sense of control given.
Therefore, it becomes possible to stabilize the steering feeling, which can greatly contribute to improving flight characteristics.

[Brief explanation of the drawing]

The figure is a schematic diagram of an aircraft control system showing an embodiment of the present invention. 1... Control rudder blade, 3... Actuator, 4...
... Pressure line, 5 ... Return line, 6 ... Hydraulic pump, 8 ... Pressurized reservoir, 15 ... Manual control member, 17 ... Control sensation imparting device, 18 ...
Q feel cylinder, 26...Return line.

Claims (1)

[Scope of utility model registration request] A pressure line for supplying hydraulic pressure for steering to an actuator provided in the control system of an aircraft, a pressurized reservoir, and a hydraulic pump that sucks liquid from the pressurized reservoir, increases the pressure, and supplies it to the pressure line. a manual control member that is manually operable and controls the actuation of the actuator by its operation; and an auxiliary hydraulic system that is provided on the manual control member and applies back pressure to give a sense of control to the manual control member. In the control sensation imparting device for a power control system of an aircraft, the return liquid flow path of the auxiliary hydraulic pressure system is connected to the pressurized reservoir independently of the return liquid flow path of the actuator. , a control sensation imparting device for the power control system of an aircraft.