RU2250179C1 - Aerodynamic anti-surge belt - Google Patents

Abstract

FIELD: designing flying vehicles.

SUBSTANCE: controllable aerodynamic surfaces are made in form of modules of twin trapezoidal lugs provided with axial rods fitted in bushes articulated on module body. Axial rods of lugs are articulated with guide slide blocks mounted in guide slots of module body. Opposite ends of slide blocks are connected at one point to axle reciprocating in horizontal bushes. Rigidly secured on said axle are inertial mass and piston. Modules are secured over periphery of disk frame of flying vehicle forming continuous circular clearance over perimeter of frame. Above-piston cavities of modules are cross-connected and are provided with pipe union for emergency delivery and relief of pressure. Trapezoidal lugs have holes which are inclined towards flying vehicle case.

EFFECT: high speed of response; enhanced efficiency of control of aerodynamic surfaces.

5 dwg

Description

The invention relates to the field of mechanical engineering, namely to the design of aircraft, and in particular, to a device for controlling the aerodynamic surfaces of an aircraft Cheremushkina OV

Known command post foot control of the aircraft, containing the main steps, levers of the steps, traction pedals, thrust to the steering wheel (see M. Shulzhenko, Aircraft Design, M., Mechanical Engineering, 1971, p. 244, Fig. 5-20).

The closest in technical essence to the proposed technical solution is a device for the foot control of the aerodynamic steering surfaces of a vehicle according to the patent of the Russian Federation No. 2090447, where the steering aerodynamic surfaces through the thrust from the output rocking chair simultaneously turn right or left, depending on whether the right or press the left pedal.

However, like other known devices, this is unsuitable and cannot be used to control the aerodynamic surfaces of the anti-surge belt of the aircraft O. Cheryomushkina

The claimed invention is aimed at solving the problem of creating, developing a device that provides high-speed and efficient control of the aerodynamic surfaces of the anti-surge belt of the aircraft Cheryomushkina OV

This result is achieved due to the fact that the controlled aerodynamic surfaces are made in the form of a pair of trapezoidal petals installed in the same type of blocks, fixed and placed on the disk frame of the aircraft so that they form a uniform uniform annular gap around its perimeter in the initial position, and the controls are made in the form of an inertial mass and a piston mounted on each block, while they are rigidly mounted on an axis movable in horizontal bushings of the block, one point of which is articulated and connected to guide sliders installed in the guide grooves of the block and the opposite ends of which are pivotally mounted on the axial rods of the aerodynamic petals, the free ends of the rods are pivotally mounted on the block body, the over-piston cavities of the piston cylinders are looped and the loopback is equipped with an extra fitting supply and pressure relief, and the piston cavity is equipped with a check valve with a dose for pressure relief and a check valve to relieve vacuum I.

The combination of interconnected inertial mass, piston and aerodynamic petals as controls provides speed and automation control.

The drawings schematically shows the device aerodynamic anti-surge belt:

figure 1 - aircraft with an aerodynamic belt in a neutral, open position,

figure 2 is the same in acceleration mode;

figure 3 - aerodynamic lobe;

figure 4 - block device in a neutral, open position,

figure 5 is the same in a closed, closed position.

The aerodynamic anti-surge belt 1 of the aircraft 2 is a set of blocks 3 with a pair of aerodynamic surfaces - petals 4, mounted on the periphery of the disk frame 5 of the apparatus 2 so that their petals 4 in the neutral position form a continuous uniform annular gap 6 for RD 7 nozzles.

The controlled aerodynamic surface is a trapezoidal petal with an axial cylindrical rod 8, which is mounted at its end in a sleeve 9 pivotally mounted on the block body 10. The axial rods 8 of the petals 4 with sliders 11 and rods 12 with the axis 14 connected in the horizontal bushings 13 of the body 10 are connected articulated at one point. The controls are made in the form of an inertial mass 15 and a piston 16 rigidly fixed on the axis 14, while the over-piston cavities 17 are looped, and the loop 18 is equipped with an emergency supply and pressure relief fitting 19 from onboard sources.

When the movable axis 14 moves to the left, the rods 12 move the sliders 11 and, behind the axial rods 8, unfold them with the bushings 9 towards each other until the petals 4 close. When the axis 14 moves from the leftmost position to the right, the petals 4 open to any intermediate position, depending on the amount of displacement axis 14. Aerodynamic petals 4 are provided with inclined openings 20 with an inclination towards the body of the aircraft 2 and serve for partial unloading from the pressure created by the engines 7 operating in the standby mode of the cavity, would be formed with closed petals 4.

The piston cavity of the cylinders is equipped with a check valve with a dose of 21 and a check valve 22.

Works aerodynamic anti-surge belt as follows.

In the absence of control forces (movement without acceleration) in the neutral position of all blocks 3 under the influence of the initial working pressure in the piston cavities 17, the movable axis 14 is shifted to the extreme right position, and through the rods 12 and sliders 11, the petals 4 are installed in a horizontal position and form the perimeter of the aircraft 2 continuous uniform annular gap 6.

At the beginning of movement (acceleration) in the selected direction, the corresponding part of the engines 7 is transferred to the operating modes. Under the influence of inertial forces, inertial masses 15 displace the movable axes 14 at half of blocks 3 to the left, at the other half - to the right. Together with the axis 14, the pistons 16 are displaced, increasing the pressure in the over-piston cavities 17 at the part of the blocks, increasing the efforts to hold the petals 4 in the open open position. Moreover, the extreme side blocks 3, the movable axis 14 of which are perpendicular to the direction of movement, the inertial mass displacement will not occur. For the remaining blocks 3 of the front in the direction of movement of half of the engines 3, the displacement of the axes 14 will depend on the angle at which inertial forces will act on them. With an increase in the speed of movement, the effect of the oncoming flow on the forward motioned closed petals 4 will significantly affect, holding them in the closed position.

Gases from the front-moving engines 7, operating in standby mode, partially flow out through the inclined openings 20, and partially through the lateral in the direction of movement, a gap of variable cross section formed by the petals 4, due to different effects of inertial forces.

When the direction of movement is changed, the operating modes of the engines 7 are redistributed, the direction of inertial forces changes, and as a result, the displacements of the moving axes 14 are redistributed, and ultimately, the petals 4 will occupy the positions corresponding to the new direction of movement. When moving in a rarefied atmosphere or airless space, the incident flow is insignificant or absent and the position of the aerodynamic surfaces does not affect the movement of the aircraft 2.

In the braking mode, to ensure the operation of the engines 7, it is necessary that the petals 4, closed in the normal mode, be open. To do this, pressure is urgently supplied through the nozzle 19 to the loopback 18 and all the pistons 16 displace the axis 14 in the position when all the pairs of petals 4 are open.

At the end of the braking mode, the pressure is urgently discharged through the fitting 19 to the working pressure from the over-piston cavities 17 and the incoming flow, depending on the direction of movement, will close the front lobes. The aerodynamic belt goes into normal flight or acceleration mode.

The use of combinations of inertial mass 15, piston 16 and aerodynamic lobes 4 as control elements makes it possible to automate and increase the speed of control.

Claims (1)

Aerodynamic anti-surge belt of an aircraft containing controllable aerodynamic surfaces pivotally connected by levers and rods to controls, characterized in that the controllable aerodynamic surfaces are made in the form of blocks of paired trapezoidal lobes with axial rods mounted in each block in bushings pivotally mounted on the block body while the axial rods of the petals are pivotally connected to the guide sliders installed in the guide grooves of the block body, and opposite ends of the sliders with articulated rods are attached at one point to the reciprocating axis in horizontal bushings on the axle block body, on which the inertial mass and piston are rigidly fixed, the blocks are fixed around the periphery of the disk frame of the aircraft and placed with the possibility of pairs of petals along the perimeter of the solid frame annular gap, the over-piston cavities of the blocks are looped, the loopback is equipped with an emergency supply and pressure relief fitting from the onboard source, and trapezoid the bottom petals are made with inclined holes with an inclination towards the aircraft body.

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