JPS63163799A - Steering gear for guided missile - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] This invention relates to an improvement in a steering device for a guided flying vehicle.

[Conventional technology]

FIG. 5 is a schematic diagram of the guidance and steering unit and the steering blade of a conventional guided flying vehicle, where (1) is the guidance and steering unit, (21 is the steering blade,
(3) is the steering axis.

A conventional windsock blade steering device is constructed as described above, and when initially flying, the steering blade (2) is a windsock blade, the leading edge rudder blade (2), and the steering shaft (3) are aligned along the air flow. It rotates and does not generate lift for the two aircraft.

Also, at this time, the steering shaft (3) is free to rotate.

No control is added. Next, after the windsock has finished, if you want to apply control and steer to change the direction of movement of the flying object, rotate the steering shaft (31) and attach the steering blade (2) fixed to this steering shaft (3). It controlled the rudder angle and used the aerodynamic force exerted on the wings.

[Problem that the invention seeks to solve]

In the conventional windsock wing steering system as described above.

During windsocking, it is an absolute condition that the point of application of the aerodynamic force (aerodynamic center) on the steering blade (2) is located behind the steering axis (31). Figure 6 illustrates the air flow and the force applied to the windsock. (A) is the air flow, is the aerodynamic force applied to the steering blade (2), is the aerodynamic center, (6) is the moment applied to the steering shaft, and the flow (A) is the force applied to the steering blade (2). 2) When there is an angle with respect to K, an air force is generated on the steering blade (2), and a moment (6) is generated on the steering shaft (3). During windsocking, the steering axis (31) is free, so the blade rotates together with the steering axis (3) due to the moment (') and follows the air flow body.

On the other hand, the aerodynamic center moves significantly due to changes in the angle of attack of one aircraft, the rudder angle of the steering wing (2), etc. Therefore, when steering after the windsock is completed, the moment (hinge moment) to the steering axis (3) is smaller than that of the steering axis (31 is the aerodynamic center body in all cases) compared to a steering device that is not a windsock wing. Since it has to be in the front, it has to be large. If this hinge moment is large, the torque required for the steering shaft (3) is also large], which poses a problem in that the steering mechanism inevitably becomes larger.

This invention was made in order to improve this problem.The hinge moment during steering of the steering blade of the steering device which becomes a windsock blade during initial flight? The purpose is to obtain a device that reduces

[Means for solving problems]

The steering device according to the present invention is provided with a strake blade that slides toward the blade base along a slide groove in the root of the steering blade,
At the time of the windsock when trying to fly initially.

A strake blade is positioned at the rear of the system slide in the lock bin and integrated with the steering blade, and the steering blade and slide blade are free to rotate with respect to the steering axis.After the windsock is finished, the lock bin is connected to the arming wire from the steering unit. , and the restoring force of the spring between the steering blade and sliding blade causes the strake blade to slide forward, and steering is performed as a steering blade with a new true planar shape.

[Effect]

In this invention, when the windsock is used for initial flight,! Fix the strake A to the rudder blade at the rear position of slide ζ4 using a lock bin, position the hinge center forward of any aerodynamic center to create a streamer blade, and when the streamer blade is finished, fix the strake blade. Remove the lock bottle that was attached to it, and use the spring to release the system rake.
By sliding it forward and using the steering wing with strakes attached, the aerodynamic center moves forward to perform steering.

Reduces twisting moment during steering.

〔Example〕

FIG. 1 is a diagram showing an embodiment of the present invention.

(1) to (3) are completely the same as the conventional device described above.

(4) is a strake blade attached to the front part of the steering blade (2), (5) is a slide m installed inside the steering blade (2) and on which the strake blade (4) slides, and +6) is a windsock. At the same time, a lock bin is used to fix the strake blade (4!) to the steering wing [2] at the rear of the slide shaft (5), and (7) is an arming wire from the steering unit to remove the lock bin (6) when the winding is completed. Reference numeral 81 denotes a spring that slides the strake blade (4) fully forward at the end of the windsock and presses the strake blade (4) against the front end of the slide groove (5). A/
FIG.

FIG. 3 shows an example of a steering device configured as described above.

It is shown in Figure 4. Figure 3 shows an example of the operation of the present invention during windsock operation, in which the strake blade (4) is
), the steering blade (2) is fixed to the rear of the sliding groove (5) on the leading edge, and together with the steering blade (2), it has a true planar shape similar to the conventional one. or is established.

FIG. 4 is a diagram showing the operation when the lock bottle (6) is removed by the arming wire (7) after the windsock is finished. When the lock bin (6) is removed, the tip spring (
81) The strake wing (4) slides forward into the groove fi.
+ [moves along the slide groove 15) due to the pushing force of the spring (81), and is fixed to the front part of the slide groove (5) by the pushing force of the spring 18), and the steering blade (2) Along with this, it becomes possible to steer around the steering axis (31).
! By sliding forward, the aerodynamic center of the entire steering wing (2) and strake wing (4) moves forward.

As this aerodynamic center position approaches the steering axis (31),
The hinge moment applied to the steering shaft (3) is reduced compared to the conventional one.

〔Effect of the invention〕

This invention has been described above. During the windsock, the strake blade is housed in the steering blade, and when steering after the windsock is finished, the strake blade slides forward, and steering is performed with the aerodynamic center moved forward of the 1r blade. This has the effect of reducing the hinge moment during steering.

In addition, during steering, the strake blade slides forward and the steering blade becomes in a state where the strakes are attached, thereby achieving an effect of increasing the lift due to the strakes.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing an embodiment of the present invention, FIG. 2 is a sectional view taken along the line AA' in FIG. 1, FIGS. 3 and 4 are operational diagrams of an embodiment of the invention, and FIG. 6 is a schematic diagram of a conventional steering device having windsock blades, and FIG. 6 is an operational diagram of the conventional steering device. In p, [1] is the guidance control section, (2) is the steering blade, (
3) is the steering shaft, (41 is the strake blade, (5) is next to the slide, (6) is the lock bin, (7) is the arming wire, (8)
) is a spring, (A) is air flow, (F) is aerodynamic force, (
3) focuses on aerodynamics. (b) is a moment. Note that the same reference numerals in each figure indicate the same or corresponding parts.

Claims (1)

[Claims] a steering wing for changing the direction of movement of the guided flying body;
a steering shaft to which the steering blade is fixed and for controlling the steering angle;
In the steering device for a guided flying object, the steering device includes a guiding steering section that moves the steering shaft, and the steering wing is configured to act as a windsock wing during the initial flight of the guided flying object. A slide groove provided in the root of the wing and extending in the direction of the blade root, a strake blade that can move back and forth on the slide groove, a lock pin for fixing the strake blade to the slide groove of the root of the steering blade, and An arming wire is tied to the lock pin and is compressed and attached between the steering wing and the sliding wing, and the arming wire is connected to the guiding steering unit for removing the lock pin, and is attached to the arming wire to move the strakes forward of the steering wing when the lock pin is removed. A steering device for a guided flying body, characterized in that it is equipped with a spring for extension.