JP6471893B2 - Amphibious aircraft with sandy land travel device - Google Patents

Description

  The present invention mainly relates to a seaplane that is detached from a surface of a water and a maintained airfield, and more particularly to an amphibious airplane provided with a sandy traveling device that can easily move from the shore to the land.

Conventional amphibious airplanes are designed to be able to take off and land on the water or from an airfield, but are not designed to land on a sandy beach such as a remote island or reversely launch.
As shown in Patent Document 1, seaplanes that take off and land on the surface of water such as seas, rivers, or lakes are known, and these seaplanes are mounted on flying boats that use the buoyancy of the airplane body or on the airplane body The floats are classified into float seaplanes that use the buoyancy of the floats, and each take off and landing from the water surface using the buoyancy of the airplane body and the buoyancy of the floats.

By the way, there is a case where it is necessary to unload a cargo on land from such a seaplane or park it.
In order to cope with such a situation, an amphibious airplane in which wheels for taking off and landing on an airfield are attached to the above-described seaplane has been proposed.

JP 2006-224686A

  In the above-mentioned seaplane equipped with take-off and landing wheels, after landing, it is possible to get on the land by the above-mentioned wheel for running on land. However, the following problems to be improved remain.

  That is, the above-described take-off and landing wheels to the airfield are premised on traveling on the ground leveled by concrete, asphalt or the like, and are not suitable for traveling on dry sand.

  If the above-described take-off / landing wheel travels on dry sand, the take-off / landing wheel is immediately buried in the sand, making it impossible to travel.

  Therefore, conventional seaplanes equipped with take-off and landing wheels can perform their functions only in specific places, such as fishing ports, equipped with slopes for pulling up vessels, etc. There are many common beaches that cannot be landed.

  And, as mentioned above, on many coasts where land is located across the beach from dry beaches, there are few facilities for mooring seaplanes, so it is difficult to park a seaplane. There is also a problem that the operational range of seaplanes is limited.

  The present invention has been made in view of the problems remaining in the prior art as described above, and it is a problem to be solved to provide an amphibious airplane equipped with a sand traveling device capable of traveling on a dry sand beach. To do.

  In order to solve the above-mentioned problems, an amphibious aircraft provided with the sand traveling device of the present invention is characterized by providing water spraying means for spraying water in the vicinity of the wheels constituting the sand traveling device.

  With such a configuration, when the seaplane travels on a dry sand beach, water is sprayed in the vicinity of the wheel by the water spraying means.

  Thus, the water sprayed in the vicinity of the wheel is sprayed on the dry sand in front of the wheel and absorbed by the dry sand as the wheel rotates.

  As described above, the sand that has absorbed the water is hardened by narrowing the space between the particles, so that the sand in the traveling direction of the wheel is hardened.

  On the other hand, the wheel runs on the sand that has been hardened as described above, and the wheel can be prevented from sinking into the sand.

  By continuously spraying such water, the sand ahead of the wheels in the running direction is continuously hardened to prevent the wheels from sinking, thereby enabling the sand to run.

  The present invention is applicable regardless of whether the amphibious airplane is a float seaplane having a float or a flying boat.

  Further, the water spraying means may be provided on the main body of the amphibious airplane or on the float.

  The water spraying means may be constituted by a tank that stores the water and a nozzle that is connected to the tank via a water supply pipe and sprays the water stored in the tank in the vicinity of the wheel. preferable.

  With such a configuration, the water can be reliably ensured, and the water can be efficiently sprayed in the vicinity of the wheel.

  Further, the tank is preferably provided with a water absorption means for taking water into the tank, whereby necessary water can be stored in the tank at an appropriate time.

  And the water storage means can be ensured by comprising the water absorption means by a water absorption pump.

  On the other hand, the tank may be provided so that at least a part thereof is positioned below the water line of the amphibious airplane, and the water absorbing means may be configured by an on-off valve positioned below the water line. It is.

With such a configuration, water can be naturally taken into the tank by opening the on-off valve when the amphibious airplane is on the water.
Further, when it is not necessary to store water in the tank, unnecessary water can be easily discharged by opening the on-off valve.

  In this invention, the water supply pump which supplies the water in the said tank to the said nozzle can be provided in the middle of the said water supply pipe | tube.

  By setting it as such a structure, it becomes possible to adjust the spreading | diffusion amount of the water from the said nozzle by adjusting the differential amount of the said water supply pump, and to adjust the hardening degree of sand.

  On the other hand, the nozzle may be installed below the tank, and an open / close valve may be provided in the middle of the water supply pipe.

  By setting it as such a structure, the water spray from the said nozzle can be performed by the natural fall of water, and the structure of the said water spraying means can be simplified.

  According to the present invention, when an amphibious aircraft equipped with a sandy land traveling device needs to travel on dry sandy land, the wheel is dispersed by spraying water in the vicinity of the wheels constituting the sandy land traveling device. Water can be sprayed on dry sand located in front of the vehicle to harden the sand, thereby preventing the wheels from sinking and allowing the amphibious airplane to run on sand.

1 is a side view of a seaplane to which a first embodiment of the present invention is applied. 1 is a front view of a seaplane to which a first embodiment of the present invention is applied. It is a longitudinal cross-sectional side view of the principal part of the 1st Embodiment of this invention. FIG. 4 shows the first embodiment of the present invention and is a cross-sectional view taken along line IV-IV in FIG. 3. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic side view showing a water spraying direction by a nozzle, showing a first embodiment of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic side view showing a water spraying direction by a nozzle, showing a first embodiment of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic side view showing a water spraying direction by a nozzle, showing a first embodiment of the present invention.

A first embodiment of the present invention will be described below with reference to the drawings.
In FIG. 1, reference numeral 1 denotes an amphibious airplane to which the present embodiment is applied. The amphibious airplane 1 includes an airplane body 2 and a pair of floats 3 mounted below both sides of the airplane body 2. It has.

  Each float 3 is provided with a pair of sandy traveling wheels (hereinafter abbreviated as wheels) 4, and these wheels 4 are spaced apart in the length direction of the float 3 and a part thereof. Is mounted so as to be exposed from the lower surface of the float 3.

  In this embodiment, the wheel 4 is supported via a shock absorber in a wheel storage portion formed in the float 3 and can be stored in the wheel storage portion together with the shock absorber by a storage mechanism (not shown). It has a configuration.

  And in each said float 3, the water spraying means A which sprays water in the vicinity of the said wheel 4 is integrated.

  The water spraying means A includes a tank 5 for storing water, and a nozzle 7 connected to the tank 5 via a water supply pipe 6 and spraying the water stored in the tank 5 to the vicinity of the wheel 4. ing.

  The tank 5 is formed so as to be located along the length of the float 3 and at the bottom of the float 3 by partitioning the inside of the float 3 in a watertight manner.

  In the present embodiment, the nozzle 7 is fixed to the shock absorber and is installed toward the upper front portion of the wheel 4 as shown in FIGS. 3 to 5.

  As shown in FIG. 3, one end of the water supply pipe 6 is positioned at the bottom of the tank 5, piped through the upper wall of the tank 5, and the other end of the nozzle 6. It is connected to the.

  In the present embodiment, a water supply pump 8 that supplies water in the tank 5 to the nozzle 7 is provided in the middle of the water supply pipe 6, and is fixed to the upper portion of the tank 5.

  Further, in the present embodiment, a water absorption pipe 9 having one end opened to the inside of the tank 5 and the other end penetrating below the float 3 and opened to the outside is provided. A water absorption pump 10 for taking external water into the tank 5 is provided in the middle of the pipe 9, and the water absorption pipe 9 and the water absorption pump 10 constitute water absorption means.

  The water supply pump 8 and the water absorption pump 10 are electrically connected to a control unit U installed in the airplane main body 2. The water supply pump 8 and the water absorption pump 10 are individually operated by the operation of the operator. The drive is controlled.

  In FIG. 3, reference numeral 12 denotes an air vent, which is provided to suppress a pressure change in the tank 5 when water is poured into the tank 5 or when water is supplied to the nozzle 7.

  The amphibious airplane 1 equipped with the sand traveling apparatus according to the present embodiment configured as described above is moved from the beach to the land via the sandy beach as necessary after landing.

  In such movement, first, the amphibious airplane 1 is moved to the undulation and the water absorption pump 10 is operated to inject a predetermined amount of water into the tank 5.

  Then, it is made to travel from the surface of the water to the sandy beach, but the sand at the beach of the sandy beach is hardened by containing sufficient water, so that the wheel 4 can travel without sinking. The amphibious aircraft 1 can run from the water to the sandy beach.

  If such traveling is continued, the amphibious airplane 1 reaches from the hard sandy land to the dry sandy land. At that time, the water supply pump 8 is operated to drain the water in the tank 5. , Spraying toward the wheel 4 through the nozzle 7.

  The water sprayed on the wheels 4 is infiltrated into the dry sand ground in the traveling direction of the wheels 4 with the rotation of the wheels 4, so that the dry sand in front of the wheels 4 is It is compacted by the water.

  Such compaction of the sand is continuously performed in front of the wheels 4 in the traveling direction, whereby compacted sand is sequentially formed in front of the wheels 4 in the traveling state.

  As a result, the wheel 4 can travel in a dry sand area without sinking into the sand, and the amphibious airplane 1 can travel through the dry sand and travel to land.

Therefore, the amphibious aircraft 1 can be moved to the land on many coastlines where no special equipment such as a lifting slope is provided, and parking on land and loading / unloading of loads on land are possible. To do.
As a result, the operational range of the amphibious aircraft 1 is greatly expanded.

  On the other hand, when traveling from the land to the water, when traveling on dry sand is forced, water is poured into the tank 5 on land, and this water is operated by the same operation as described above. By spraying in the vicinity of the wheel 4, movement up to the water is possible.

  And when it moves to the hard sandy ground at the time of a wave, the buoyancy of the said float 3 can fully be ensured by moving to the water after discharging all the water in the said tank 5. FIG.

Note that the shapes, dimensions, and the like of the constituent members shown in the above embodiment are merely examples, and various changes can be made based on design requirements and the like.
For example, in the above-described embodiment, the example in which all the constituent members of the water spraying means A are provided in the float 3 has been described.

  Further, the direction of water spraying by the nozzle 7 is directed toward the upper part of the wheel 4 as shown in FIG. 6, directed toward the front of the wheel 4 as shown in FIG. 7, or a combination thereof. It can also be oriented.

  In the embodiment, a float seaplane is shown as the amphibious plane, but application to a flying boat is also possible.

  Further, the tank 5 is provided so that at least a part thereof is positioned below the waterline of the amphibious airplane 1 (the float 3), and the tank 5 is positioned below the waterline. As shown in FIG. 3, an on-off valve 11 is provided, whereby the water absorbing means can be used.

  With such a configuration, water can be poured into and discharged from the tank 5 by opening and closing the on-off valve, and the water absorption means can be simplified.

  Further, the water spraying means A can be configured by installing the nozzle 7 below the tank 5 and providing an open / close valve in the middle of the water supply pipe 6.

  By setting it as such a structure, it is possible to omit the water supply pump 8 used in the said embodiment.

1 Amphibious Airplane 2 Airplane Body 3 Float 4 Wheel (Wheel for Land Use)
5 Tank 6 Water supply pipe 7 Nozzle 8 Water supply pump 9 Water absorption pipe 10 Water absorption pump 11 On-off valve 12 Air vent A Water spray means U Control unit

Claims (10)

  An amphibious airplane equipped with a sandy land traveling device, comprising an amphibious airplane equipped with a sandy land traveling device, comprising water spraying means for spraying water in the vicinity of wheels constituting the sandy land traveling device.   2. The sandy land traveling device according to claim 1, wherein the amphibious airplane is a float seaplane provided with a float, and the water spraying means is provided in a main body of the amphibious airplane. Amphibious airplane.   The amphibious airplane provided with the sand traveling apparatus according to claim 1, wherein the amphibious airplane is a float seaplane provided with a float, and the water spraying means is provided in the float. .   The amphibious airplane provided with the sandy land traveling device according to claim 1, wherein the amphibious airplane is a flying boat, and the water spraying means is provided in a flying boat body.   The water spraying means includes a tank for storing the water, and a nozzle that is connected to the tank via a water supply pipe and sprays the water stored in the tank to the vicinity of the wheel. An amphibious airplane comprising the sandy land traveling device according to any one of claims 1 to 4.   The amphibious aircraft provided with the sand traveling device according to claim 5, wherein the tank is provided with water absorption means for taking water into the tank.   The amphibious aircraft provided with the sandy land traveling device according to claim 6, wherein the water absorption means is a water absorption pump. The tank is provided so that at least a part thereof is positioned below the waterline of the amphibious airplane, and the water absorbing means is constituted by an on-off valve positioned below the waterline. An amphibious aircraft comprising the sandy land traveling device according to claim 6.   A water supply pump for supplying water in the tank to the nozzle is provided in the middle of the water supply pipe. Amphibious airplane.   9. The sandy land traveling device according to claim 5, wherein the nozzle is installed below the tank, and an open / close valve is provided in the middle of the water supply pipe. Amphibious airplane.