JP4555313B2 - Underwater high-speed flying object - Google Patents

Description

  The present invention relates to an underwater high-speed flying object, and more particularly to a novel improvement for obtaining stable flying characteristics by contacting a blade with the inner surface of a cavity generated by a cavitation generator at the tip of a housing. .

As this type of underwater high-speed flying body used heretofore, the configuration disclosed in Patent Document 1 can be listed in FIG.
That is, what is indicated by reference numeral 22 in FIG. 3 is a housing of the underwater high-speed flying body 20, and a conical cavitation generator 26 is provided at the tip of the housing 22, and gas is supplied to its circumferential side surface. A gap 24 is provided for jetting into the water.

  A balloon skirt 30 is provided at the rear of the housing 22, and a wing 42 for controlling the stability or direction of the housing 22 is provided at the rear of the balloon skirt 30. An underwater jet propulsion device 45 for generating the airflow 28 is provided.

  Next, the operation will be described. The underwater high-speed flying object 20 propelled underwater at high speed with the jet airflow 28 formed by the underwater jet propulsion device 45 is covered with the cavity 36 by the cavitation generator 26 attached to the tip of the underwater high-speed flying object 20. Promote Since the cavity 36 is made of water vapor generated by the cavitation generator 26 and gas supplied from the gap 24 on the side surface of the housing 22, friction generated between the water 60 and the housing 22 without the cavity 36. Compared with the force, the frictional force of the water / cavity boundary 38 between the water 60 and the cavity 36 can be remarkably reduced, and high-speed flight in the water 60 becomes possible. At this time, in order to prevent the gas in the cavity 36 from being rapidly sucked out by the jet airflow 28 formed at the rear part of the underwater high-speed flying body 20 and disappearing, the balloon-type skirt 30 attached around the housing 22 sucks the air. Since the high-speed airflow is expanded and the high-speed airflow region is narrowed, the gas flows out from the thin airflow layer 40, the gas outflow in the cavity 36 is prevented, and the cavity 36 is held for a longer time. The high-speed flight time was long.

US Pat. No. 6,739,266

Since the conventional underwater high-speed flying object is configured as described above, the following problems exist.
That is, when a conventional underwater high-speed flying object is driven into the water with a gun or a gun and applied to a small underwater high-speed flying object that cannot be loaded with an underwater jet thruster, there is no jet airflow at the rear of the flying object. The high-speed outflow portion disappears, and the entire flying object is taken into the cavity starting from the flying object tip. For this reason, there has been a problem that the flight becomes unstable because the effect of the wing for stabilizing the flight and controlling the direction is lost, and the force acting on the rear part of the flying object is significantly smaller than that of the tip part.

An underwater high-speed flying body according to the present invention is provided with a casing having a longitudinal shape and a circular cross section, a cavitation generator provided at a tip of the casing, and a rear position of the cavitation generator of the casing. comprising a closable plurality of blades, and an inner surface of the cavity caused by cavitation generator, in water fast projectile which is adapted the vane is in contact, and the blade switching mechanism provided in the prior SL housing, the vane A support body provided in the opening / closing mechanism section and having the blade at an end thereof, a drive mechanism provided in the housing for rotating the support body, and a control mechanism for controlling the operation of the drive mechanism; comprising a, by controlling the force which the blade is in contact with the inner surface of the cavity in the drive mechanism, a structure for controlling the flight direction of the housing, also the Roots are at least three from consisting configuration.

Since the underwater high-speed flying object according to the present invention is configured as described above, the following effects can be obtained.
In other words, a plurality of blades that can be freely opened and closed are provided in a part of the housing, and each blade is configured to contact the water / cavity boundary of the cavity. The spread of the flight can be easily adjusted according to the diameter of the cavity that changes depending on the performance of the aircraft, the underwater high-speed flying object can be stabilized, and the direction of the flying object can be controlled easily and reliably.

  An object of the present invention is to provide an underwater high-speed flying object capable of obtaining stable flying characteristics by contacting a blade with an inner surface of a cavity generated by a cavitation generator at the tip of a housing.

Hereinafter, preferred embodiments of an underwater high-speed flying object according to the present invention will be described with reference to the drawings.
In addition, the same code | symbol is attached | subjected and demonstrated to a part the same as that of a prior art example, or an equivalent part.
In FIG. 1, what is indicated by reference numeral 22 is a housing having a circular cross section of the underwater high-speed flying body 20. It has been.

  A plurality of blades 50 are provided so as to be openable and closable along the direction of the arrow A at the rear side of the cavitation generator 26 of the housing 22, that is, at a substantially central position in the longitudinal direction of the housing 22.

Each blade 50 is attached to the blade opening / closing mechanism 51 in the housing 22 at the end of an arm-like support body 52 rotatably provided via a shaft support 52a. It is formed so as to have a wide surface with respect to the traveling direction of the high-speed flying object 20.
When viewed from the rear side of the housing 22, each blade 50 is arranged with four blades 50 with their surfaces orthogonal to each other as shown in FIG. 2, and each blade 50 is arcuate. It is formed by bending. Each blade 50 is configured to contact a water / cavity boundary 38 that is an inner surface of the cavity 36.

A support 52 supported by a blade opening / closing mechanism 51 provided in the housing 22 is rotated in the direction of arrow A by a drive mechanism 53 including a linear actuator provided in the housing 22 to perform an opening / closing operation. The drive mechanism 53 is configured such that the opening / closing operation is controlled by a control mechanism 54.
Note that the rear end of the housing 22 is not provided with the underwater jet propulsion device in FIG. 3, and the housing 22 is configured to be launched into water by a gun or a gun not shown.

  Next, the operation will be described. When the underwater high-speed flying object 20 is driven into the water 60 by the above-described gun or gun, water vapor generated by the cavitation generator 26 at the tip of the casing 22 uniformly covers the casing 22 from the front to the rear, thereby forming a cavity. 36 is formed, the frictional force with water is remarkably reduced, and high-speed flight in the water 60 becomes possible.

  In the above-described case, the blades 50 provided in the housing 22 are spread outward by the operation of the driving mechanism 53 to control the force contacting the inner surface of the cavity 36, that is, the water / cavity boundary 38, Each blade 50 receives a force from the water / cavity boundary 38 of the cavity 36, that is, the water surface of the inner surface, and the underwater high-speed projectile 20 is stably held at the axial center position of the cavity 36.

As described above, the spreading state of the blade 50 is controlled by the control mechanism 54 via the drive mechanism 53 and the support body 52 under the state where the underwater high-speed flying body 20 is flying at high speed in the water 60. By doing so, the flying direction of the underwater high-speed flying object 20 can be controlled.
The flight direction of the underwater high-speed flying object 20 can be controlled by a program built in the control mechanism 54 in advance, or by remote control from the outside by radio (not shown).
Moreover, although the number of the said each blade | wing 50 has shown the case of 4 sheets in FIG. 2, at least 3 sheets are required and 3 or more sheets are suitable.
Further, as shown in FIG. 2, each of the blades 50 is configured by a surface bent in an arc shape, but a plane that does not bend is also possible. Furthermore, although the case where the submerged jet propulsion device having the conventional configuration shown in FIG.

It is sectional drawing which shows the principal part (rear part is abbreviate | omitted) of the underwater high-speed flying body by this invention. It is a right view of FIG. It is a block diagram which shows the conventional underwater high-speed flying body.

DESCRIPTION OF SYMBOLS 20 Underwater high-speed flying body 22 Housing 26 Cavitation generator 38 Water / cavity boundary 50 Blade 51 Blade opening / closing mechanism 52 Support body 53 Drive mechanism 54 Control mechanism 60 Water

Claims (2)

A casing (22) having a longitudinal shape and a circular cross section, a cavitation generator (26) provided at the tip of the casing (22), and the cavitation generator (26) of the casing (22) And a plurality of blades (50) that are provided in the rear position and can be freely opened and closed,
The inner surface of the cavity (36) generated by cavitation generator (26), in the water during high speed flying bodies as the vane (50) is in contact,
Before SL blade switching mechanism provided in the housing (22) and (51), support the formed in the vane opening and closing mechanism portion (51) having said blade (50) at its end (52), the housing (22) provided with a drive mechanism (53) for rotating the support (52), and a control mechanism (54) for controlling the operation of the drive mechanism (53),
By the blade (50) to control the force in contact with the inner surface of the cavity (36) in said drive mechanism (53), to control the flying direction to that of water in a high speed flight, wherein said housing (22) body. The underwater high-speed flying object according to claim 1, wherein the blade (50) comprises at least three.

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