JP5160098B2 - Flying boat - Google Patents

Description

  The present invention relates to a flying boat, and more particularly to a flying boat that can fly over a short distance from water or land and can also hover.

Conventionally, an airplane is configured in accordance with Bernoulli's theorem, and the center of gravity is set on the main wing. The longitudinal side surface of the main wing of an airplane is a so-called wing shape in which the lower surface is flat, a front-up mounting angle is given, and the upper surface of the main wing is bulged at the leading edge. Naturally, the lower surface of the horizontal tail is not bulged.
By applying Bernoulli's theorem to this shape, the wind speed passing through the upper surface is faster than the wind speed passing through the lower surface of the main wing during flight, resulting in a lower air density on the upper surface of the main wing and negative pressure. It is said that the aircraft can fly because it is lifted by the pressure difference.
However, in the above explanation, when the airplane is flipped over, the aircraft will sink downward, resulting in a contradiction in theory.
In addition, if the aircraft tilts sideways during turning, the entire aircraft would actually slip sideways in a diagonally downward direction, although it would normally rise diagonally upward.
As a result, this flight theory has recently been questioned and the flight theory has been reviewed.
On the other hand, the main wing has a larger wing length that protrudes to the side than the chord length and has a large aspect ratio, and a small wing ratio has a high resistance and is difficult to fly.
In addition, large and thick aircraft side and front parts have high air resistance during flight, making it difficult to fly. In addition, if the airplane is not flying at high speed, there is no lift on the wings, so it cannot hover.

Conventional airplanes require a long runway when taking off and landing due to the large aspect ratio of the main wing.
An object of the present invention is to provide a flying boat that floats on a short distance from water or land, can perform low-speed glide and hover in the air, and can descend slowly even when the engine is stopped.

The present invention does not include a main wing having a large aspect ratio, causes the wing to act on the entire lower surface of the fuselage, and causes the lower surface of the horizontal tail to swell into an inverted wing shape, thereby generating a high-speed airflow passing through the upper surface of the side wing. A normal pressure is applied on the upper surface of the horizontal tail, and the airflow passing along the lower surface of the side wing is allowed to pass at a higher negative pressure on the lower surface of the horizontal tail. It is characterized by the fact that it is designed to be The specific contents of the invention are as follows.

(1) Main body of provided on the right and left outer side faces, each wingtip shorter side wing than the blade length is the chord length, each side body provided, the horizontal stabilizer between the rear inner faces of both side carcass, side wing trailing The horizontal core of the horizontal tail is positioned at the same level as the horizontal core of the main fuselage at the position beyond the vent hole from the front, and the front end of the side wing is retracted from the front end of the main fuselage. matched to the rear surface, the front end of the side body is retracted from the main body of the front end, and located in front of the front end of the side wings, also the rear end protrudes rearward from the main body of the rear end, a longitudinal tailplane A flying boat with a side face that has a flat upper surface, a reverse wing cross-sectional shape with the tip edge of the lower surface bulging downward, and a propulsion device at the rear of the upper surface of the main fuselage.

(2) the main body is thinned rear thicker leading edge in plan view, in a side view, a larger upper than the horizontal center line passing through the top and bottom center of the flying boat, bottom, and the bottom surface of the side wing The flight as described in (1) above, wherein the side fuselage is substantially the same height, the lower part is larger than the upper part of the horizontal core, the bottom part is located below the bottom part of the main fuselage, and the rear lower part is also the top. Boat.

(3) A lateral tail wing having a chord length larger than the wing length from the rear end to the middle portion is fixed to the outer side surfaces of the left and right side fuselage, the upper surface is flat, and the lower surface is the front edge in a side view. The flying boat according to the above (1) or (2), which has a reverse wing cross-sectional shape in which a portion bulges downward.

(4) On the upper surface of the horizontal tail, the upper surface of the auxiliary horizontal tail provided on the upper surface of the vertical tail is made flat, and the lower surface is also a reverse blade cross-sectional shape with the leading edge bulging downward, and both side ends are upper and outer The flying boat according to any one of (1) to (3), which is inclined obliquely.

(5) The propeller is intended to include a propeller, the total air flow by pulp propeller be inclined toward the rear direction front end portion of its is, that to pass through the upper surface of the horizontal stabilizer (1) - ( 4) A flying boat described in any of the above.

  According to the present invention, the following effects can be obtained.

In the flying boat described in the above (1), a side wing having a chord length larger than the wing length is fixed to the side of the main fuselage, the side fuselage is fixed to the wing tip, and the rear side of the side fuselage is opposed to the inner surface. Unlike the conventional aircraft's horizontal tail, the upper surface is flat, but the lower surface is formed with a cross section of a reverse wing type as if the lower surface of the aircraft was reversed. since it has, along the upper surface of the side wings in flight, the negative pressure of the air flow flowing at high speed backward, exit the rear direction becomes atmospheric pressure along the upper surface of the horizontal stabilizer, along the lower surface of the side wing The passing airflow becomes high speed on the bulging surface of the lower surface of the horizontal tail, and a strong negative pressure is generated in the lower surface area. By pulling down the rear part of the aircraft, the horizontal stability of this aircraft, which tends to fall forward, is maintained.
In other words, this flying boat has the nose lowered while it is in progress, but in order to adjust the nose down, the lower surface of the horizontal tail is adjusted to create a negative pressure on the lower surface of the horizontal tail. It bulges larger than.
When the propulsion speed is slow and the speed of the airflow flowing along the fuselage is slow, the speed of the airflow passing along the upper surface of the side wing is slow, so the normal atmospheric airflow below moves upward from the draft hole to the negative pressure . Supported by the updraft, the aircraft can hover.
When hovering, lift the nose and rotate the propeller, and the airflow passing through the top of the side wings in front of the propeller becomes high speed and negative pressure. At the rear of the propeller, the top of the horizontal tail is Since the positive pressure and the lower part become negative pressure, and the propulsive force works backward in the upper part and forward in the lower part, the airframe can be kept stationary.
When the propeller stops in the air, the air under the side wings surrounded by the left and right side fuselages and the air below the horizontal tail escapes upward from the draft hole, so the aircraft gently rolls while slightly rolling. You can descend.
In this case, when the airframe is light, the size of the air vent hole may be large, but when the airframe is heavy, it is preferable that the air vent hole is small in order to reduce the amount of air passing upward from the air vent hole.

In the flying boat described in (2) above, the front of the main fuselage is thick and the rear is thin, so the airflow passing from the front to the back of the main body is high-speed due to the Coanda effect, and the airflow is not turbulent. And it has excellent progress. The bottom surface of the main fuselage and the bottom surface of the side wing are at the same level, and the lower part of the side fuselage is set below the bottom surface of the side wing. When the nose is turned upward, the surface effect is enhanced, and the rolling and pitching of the fuselage does not occur, and the steering stability is improved. Since the lower rear part of the side fuselage is formed on the top, it is suitable for navigating on the water.

The flying boat described in the above (3) has a side wing formed on the rear outer surface of the side fuselage, the upper surface thereof is flat, and the lower surface has a reverse wing cross-sectional shape in which the front edge portion bulges greatly. The lower surface of the side wing does not have an angle of attack with respect to the relative flow, and the nose looks down, but negative pressure is generated in the lower surface area of the side tail during the flight, The nose is raised, and stability in the direction of travel is maintained.

  The flying boat described in (4) above is provided with a sub horizontal tail on the upper end surface of the vertical tail above the horizontal tail, the upper surface is flat, and the lower surface is an inverted airfoil with the front edge bulging downward. Since the tip of the wing is tilted upward, negative pressure is generated in the lower surface area of the side tail during flight, and the nose that tries to descend as it moves forward is raised to stabilize in the direction of travel, rolling and pitching Is less likely to occur and has excellent maneuverability.

In the flying boat described in (5) above, since the propeller is arranged so as to face the wind vent at the rear side of the side wing, the high-speed airflow generated by the propeller passes through the upper surface of the horizontal tail, and stable maneuvering is performed. Excellent in properties. Since the propeller blade tip is inclined backwards, the airflow is not diffused in the propeller centrifugal direction.

  Examples of the present invention will be described below.

1 is a plan view of a flying boat according to a first embodiment of the present invention, FIG. 2 is a side view, FIG. 3 is a bottom view, FIG. 4 is a sectional view taken along line AA in FIG.
In the figure, the main body 2 of the flying boat 1 has a fish shape that approximates a tuna in both a plan view and a side view.

In the rear half of the left and right sides of the main body 2, side wings 3 having a long chord length and a short blade length have their front ends retracted from the front ends of the main body 2 and their rear ends aligned with the rear ends of the main body 2. Is fixed. The lower surface of the main body 2 is equal to or higher than the lower surface of the side wing 3. Reference numeral 1a denotes a cockpit.

As shown in FIG. 4, the longitudinal side shape of the side wing 3 has a wing cross-sectional shape above the horizontal core L of the flying boat 1, and the front of the horizontal core L bulges slightly downward below the horizontal core L, It is horizontal at the same position as the lower surface of the main body 2.
Therefore, the lower surface of the side wing 3 does not have a front-upward mounting angle unlike a conventional airplane. The side wing 3 is loaded with small luggage, fuel and the like.

A side fuselage 4 is provided at the outer end of each side wing 3. The side body 4 is longer than the main body 2 and has a substantially tuna shape both in plan view and side view.
In plan view, the front end portion of the side body 4, in the succeeding from the front end portion of the main body 2, projecting forwardly from the side wings 3, the rear portion of the side fuselage 4, longer rearward of the rear end of the side wing 3 It protrudes.

In the side fuselage 4, the upper side from the horizontal core L is the same level as the upper end of the side wing 3 in the side view, and the bulge portion closer to the front is below the horizontal core L from the main body L. The lower part of the fuselage 2 is greatly lowered downward, and the rear part is raised.

The inner bottom part of the side body 4 is a float, and the upper part is a guest room or a luggage room. As a result, as shown in FIG. 5, in the front view, the side fuselage 4 is a boat having buoyancy like a catamaran type ship.
The side fuselage 4 as a float of a boat ensures stability even in the water or in the water, and exhibits excellent running performance associated with the Coanda effect.

Since the main body 2 and the side body 4 are both large and thick at the front, in general, it is considered that the air resistance is large and the speed is not increased, so that it is not suitable for flight.
However, since the main body 2 and the side body 4 are set in a substantially tuna shape, the Coanda effect acts greatly.

That is, when a force is applied by the propulsion device 8 directed from the rear toward the front of the flying boat 1, the relative flow at the front is compressed at the front of the main fuselage 2 and the side fuselage 4 so that mucus is applied to the surface. And flow backward at high speed, and no turbulence is generated.
The main fuselage 2 and the side fuselage 4 repel and move forward with the passage of the relative flow that has been speeded up as a reaction that pushes the front part.

This is because the pressurized airflow applied to the front part passes at high speed so that the wooden piece jumps up when the pushing force is removed from the piece of wood submerged in the water by applying the pushing force. As a reaction, the main body 2 and the side body 4 jump forward and continuously move forward.
The reason why tuna can swim at high speed in the water is due to the Coanda effect caused by the high-speed flow that passes backward along the tuna body as the tuna advances.

A horizontal tail 5 is horizontally installed between the rear facing portions of the left and right side fuselage 4 at a position separated from the rear end of the side wing 3 rearward and across the air vent hole 1b. As shown in FIG. 4, the vertical side profile of the horizontal tail 5 is thin and flat above the horizontal core L, and the lower surface has a downward bulge at the front edge, which is almost the same level as the lower position of the side wing 3. In position.

  This is a feature that is different from the conventional airplane in which the position of the tail is different from that of the main wing. That is, the airflow passing from the front to the rear along the horizontal tail 5 has a lower passage speed than the upper surface area, and generates a negative pressure in the lower surface area. This is also a very different feature from the conventional airplane.

An elevator 6 is provided at the rear of the horizontal tail 5, and a side tail 7 aligned with the horizontal tail 5 is provided at the outer side of the side fuselage 4.
The side tail 7 has a substantially pentagonal shape with a sharp point in plan view, and has a long inner side protruding forward, and its front end is positioned forward of the position of the front end of the horizontal tail 5.

  The rear part of the side tail 7 projects more outward than the rear outer surface of the side fuselage 4. The side tail 7 is set at the same level position as the horizontal core L. The upper surface of the side tail 7 is flat and aligned with the upper surface of the horizontal tail 5, and the front and inner portions of the lower surface are also thick and gradually thinner toward the rear.

  A propulsion unit 8 is disposed at the upper rear portion of the main body 2. The propulsion unit 8 is of a propeller type, and is disposed in the air vent hole 1b with the propeller 9 facing rearward. If the propeller 9 is related to Japanese Patent Application No. 2005-268928, Japanese Patent Application No. 2005-318126, etc. with the blade tip inclined backward, the wind noise is low and the propulsion performance is excellent. Of course, the propulsion unit 8 can employ a jet type.

A vertical tail 10 is disposed at the center of the upper surface of the horizontal tail 5 in the width direction, and a rudder 11 is attached to the rear of the vertical tail 10.
In addition, the vertical tail 10 can be provided in a pair of left and right or three in parallel.

The flying boat 1 of the present invention configured as described above can float the side fuselage 4 on the water and can be advanced as a boat by driving the propulsion unit 8.
In this case, when the nose is directed upward by the elevator 6, the entire flying boat 1 is lifted by the airflow passing through the lower surface of the side wing 3 between the two fuselage bodies 4, and the water contact area is increased. Reduced and can be propelled at high speed.

  When the number of revolutions of the propulsion unit 8 is increased and the nose is turned upward, the surface effect on the lower surface of the flying boat 1 is increased, and the flying boat 1 can float and fly from the water surface. When flying, the rudder 11 and the elevator 6 can be operated and freely steered.

The flow of the airflow when the flying boat 1 glides will be described with reference to the drawings. Above the horizontal core L, the relative flow hitting the front of the main body 2 is divided into the left and right sides of the main body 2 and passes rearward at high speed so as to adhere to the surface of the main body 2.
As a result, the relative flow is compressed in the front portion of the main body 2, and the flying boat 1 moves forward as a reaction in which the branched airflow passes backward at high speed.

  That is, due to the Coanda effect, the airflow compressed in the surface area of the front edge portion of the main body 2 passes as a negative pressure backward at a high speed as the reaction. At this time, since the rear part of the main body 2 is thin, a normal-pressure airflow from the outside passes through the rear part of the main body 2 with respect to the negative pressure airflow that is high in the front part and passes backward at high speed. The flying boat 1 moves forward as its reaction.

Since the lower surface of the main body 2 is substantially flat, the airflow passing backward is normal pressure, and therefore the flying boat 1 is pushed upward. About the side wing | blade 3, the effect | action similar to a normal wing | wing arises. The high-speed airflow passing through the upper surface of the side wing 3 passes through the air vent hole 1b, hits the rear horizontal tail 5 and changes to normal pressure along the upper surface. The airflow flowing along the lower surface of the side wing 3 flows at a high speed along the bulging surface on the lower surface of the horizontal tail 5 and becomes negative pressure.

That is, as shown in FIG. 6, the relative flow hits the front of the side wing 3, birth to high air density high pressure to the front end of the side wings 3, the air flow is branched into upper and lower side wings 3, the upper surface The airflow flowing along the airflow becomes a high-speed airflow of negative pressure, passes through the upper surface of the horizontal tail 5 to the rear at a normal pressure at the portion of the air vent hole 1b. At this stage, the side wing 3 tries to rise as it moves forward as a reaction that releases the pressure caused by the high pressure at the front.

The airflow passing rearward along the lower surface of the side wing 3 is prevented from diffusing outwardly by the left and right side fuselage 4 and is guided accurately rearward. When the airflow strikes the front part of the horizontal tail 5, Passes backward at high speed along the bulged lower surface, generating negative pressure.

  At this stage, the horizontal tail 5 descends as it advances. As a result, the rear part is lowered from the center of gravity of the airframe, so that the entire airframe has a slight angle of attack with respect to the relative flow, and a stable lift is obtained.

On the other hand, the lower surface of the side body 4 produces the Coanda effect similarly to the main body 2, and the high-speed airflow passes rearward along each side surface.
That is, when the flying boat 1 is gliding, the negative pressure airflow passing at high speed along the lower surface of the side fuselage 4 is faster than the flying speed of the flying boat 1.

  Therefore, the airflow compressed in the front part of the side fuselage 4 pressurizes the front part of the side fuselage 4, branches along the peripheral surface, passes at high speed to the rear part, and becomes negative pressure. Normal air is drawn into the rear part of 4 and the rear part of the side body 4 is pushed forward, so that the main body 2 is pushed forward and advances.

  Thus, in this flying boat 1, due to the overall three-dimensional shape, a change in atmospheric pressure is caused in each part, and the change in atmospheric pressure pushes the entire flying boat 1 forward and lifts it up. . In addition, it is possible to carry out glide safely even though there is no wing like a normal airplane.

As described above, the high-speed airflow along the surface of the side fuselage 4 passes between the side fuselage 4 at the lower surface portion of the side wing 3. Therefore, an air current strip having a different atmospheric pressure from the surroundings is formed in the space.

  Then, as long as the flying boat 1 glides, the air current strip will glide as a guide path such as a rail, and it is excellent in straightness, and in the state of riding on the air current strip, the left and right side fuselage No. 4 acts as a balance weight such as a heroine, and it is difficult to cause excessive rolling and pitching, and excellent steering stability can be obtained.

The front of the main fuselage 2 and the side fuselage 4 are thick and large like a tuna fuselage, so the center of gravity of the flying boat 1 is in the middle of the front and rear of the main fuselage 2, but the lower surface of the side wing 3 is relatively Since it does not have an attachment angle with respect to the flow, when it glides, it tends to be in a forward and downward posture when pushed forward by the propulsive force of the propulsion device 8. The flying boat 1 is levitated by the surface effect as a reaction against the pressing action.

On the land, the flying boat 1 can take off in a very short distance. That is, when the airflow is moved backward at high speed by the propulsion device 8, the airframe is pushed forward by the Coanda effect, and upward lift is generated in the side wing 3. Raise the nose.

  Even when the propulsion device 8 is in operation and the forward flight stops, as long as the airflow is flowing from the front to the rear along the upper and lower surfaces of the flying boat 1, the flying boat 1 has the elevator 6. With the above operation, the nose can be turned up and hovered at that position.

Even if forward flight is stopped, the propulsion device 8 is higher than the side wing 3 and the horizontal tail 5, so that the airflow generated by the propulsion device 8 is faster on the upper surface than the lower surface of the flying boat 1. Therefore, the atmospheric pressure in the upper surface area is lower than the lower surface area of the flying boat 1, and lift is generated.

At the same time, when the elevator 6 is raised and the nose is turned upward, the lower surface of the side wing 3 has an angle of attack with respect to the relative flow, and the airflow passing backward is against the lower surface of the flying boat 1. As a result, a head effect is generated and a surface effect is generated, and the descent of the flying boat 1 is suppressed.

When the elevator 6 is loosened so that the attitude of the flying boat 1 is leveled and the thrust of the propulsion unit 8 is lowered, the flying boat 1 can gradually descend due to the weight and land or land. In this case, since there is an air vent hole 1b between the side wing 3 and the horizontal tail 5, air escapes upward from the air vent hole 1b, and the flying boat 1 descends on the spot stably without swinging. can do.

When the propulsion device 8 stops, it can descend almost in the same manner. As shown in FIG. 7, when there is no wind draft hole 1b between the side wing 3 and the horizontal tail 5 of the flying boat 1, the gravity of the entire lower surface of the flying boat 1 acts on the air on the lower surface. When 1 tilts in one direction, the repulsive air in the lower region escapes diagonally upward, and the flying boat 1 suddenly accelerates diagonally downward and crashes.

  However, since the air blowing hole 1b is provided in the flying boat 1, the portion of the air blowing hole 1b is not pressurized by the weight of the flying boat 1 with respect to the lower air. Air with high air density flows upward from the portion of the air vent hole 1b without weight pressure.

  The airflow that flows upward from the portion of the air vent 1b is an upward airflow having a high air density and is linear, and the lateral movement of the flying boat 1 is suppressed, and if the air vent 1b is small, the flying boat Since the descent speed of 1 is suppressed, it is possible to descend slowly.

  For example, if you hold the paper horizontally with your hand and release it, the paper will sway and descend, and if you tilt it to one side, it will drop suddenly, but if you make a hole in the center of the paper, it will swing gently but keep it level and gently To descend. This is because the horizontal stability is maintained, there is no repulsion against the gravity only in the hole part, and even the air in the repulsive part diffuses upward from the hole, so that the airflow rises through the hole from the surroundings. Supported by an updraft like a column, the paper descends slowly without moving sideways.

  Note that the parachute can be stored in the airframe of the flying boat 1 by forming a parachute storage part (not shown) having an opening / closing lid on the upper part. In this case, the parachute can be configured to open when the opening / closing lid is opened and thrown out. Thus, if the parachute is opened during the descent, the impact can be landed gently.

At the time of gliding, the conventional airplane bulges outward and requires a large turning radius, and the aircraft slides sideways while tilting.
Even if the flying boat 1 of the present invention is inclined horizontally, the left and right side bodies 4 are positioned obliquely up and down, so that the side surfaces that are positioned below the side bodies 4 have surface effects. As a result, skidding does not occur.

  In addition, due to the Coanda effect, the forward movement of the flying boat 1 and the force to move up the aircraft work, and the maneuverability is excellent, so that it is difficult to bulge outward when turning, and it is possible to turn with a short radius. it can.

  FIG. 8 is a front view showing Example 2 of the flying boat. The same parts as those in the previous example are denoted by the same reference numerals, and description thereof is omitted. In the second embodiment, vertical tails 10 are erected on the rear upper parts of the left and right side bodies 4 of the flying boat 1, and a sub horizontal tail 12 is provided on the upper end surface thereof.

  The vertical side surface shape of the sub horizontal tail 12 is formed in the same manner as the horizontal tail 5. The auxiliary horizontal tail 12 is provided directly above the horizontal tail 5 or behind the horizontal tail 5. Although not shown, a rudder is disposed at the rear of each vertical tail 10.

In the second embodiment, since the pair of right and left vertical tails 10 are provided, it is difficult to roll, and the rudder is also a pair of left and right, so that the steering performance is improved. Further, since the auxiliary horizontal tail 12 is provided at a position higher than the side wing 3, pitching hardly occurs and steering stability is improved.

  The left and right ends of the auxiliary horizontal tail 12 are inclined portions 12a that are inclined upward. Therefore, the surface effect at the time of turning is enhanced, the maneuverability is improved, and the rapid ascent in short-distance running is excellent. Yes. Note that the inclined portion 12a can also face downward. Three vertical tails 10 may be provided.

  FIG. 9 is a longitudinal side view of the elevator. As with the horizontal tail 5, the elevator 6 has a flat upper surface, but the lower surface is formed in an inverted airfoil shape with a leading edge bulging downward. Thereby, at the time of water smooth sky, the high-speed airflow similar to the horizontal tail 5 passes through the lower surface.

  When the elevator 6 is lifted, its upper surface is pressurized with airflow from the front, and on the lower surface, the high-speed airflow escapes upward and negative pressure is generated, so the rear part of the fuselage is lowered and the steering performance is excellent. When the elevator 6 is lowered, the lower surface of the elevator 6 bulges, so that a rapid descent does not occur and maneuvering is easy.

  In addition, this invention is not limited to the said Example, A design change can be suitably performed according to the objective. In addition to the practical aircraft, it can be an unmanned radio controller. In that case, a solar power generation panel (not shown) can be attached to the upper surface of the flying boat 1 to provide a power source.

The flying boat 1 of the present invention can travel freely on the water, and can also fly on land at short distances. In addition, it can hover in the air, land on land, and can be detached from the garden and ship deck.
Because of its high performance, disaster rescue, emergency rescue activities, traffic between isolated islands, traffic on mountainous areas, traffic on plains and deserts, expansive pasture and site movement, spraying of agricultural chemicals and fire extinguishing agents, complicated land It can be used for shooting, fish detection with a fish detector, underwater terrain exploration with sonar, radio-controlled danger area photography, police / defense activities, fishing, other registrars, and other fields. .

It is a top view of Example 1 of a flying boat concerning the present invention. It is a side view of the flying boat in FIG. It is a bottom view of the flying boat in FIG. It is an AA line vertical side view in FIG. It is a front view of the flying boat in FIG. It is a longitudinal side view of the main wing and horizontal tail It is a vertical side view of a main wing and a horizontal tail during descending. It is a front view of Example 2 of the flying boat of the present invention. It is a vertical side view of an elevator.

1. Flying boat 1a. Pilot seat 1b. Ventilation hole Main fuselage Side wings4. 4. Side fuselage Horizontal tail 6. Elevator 7 Lateral wing 7a. Aileron 8. Propeller 9. Propeller 10. Vertical tail 11. Rudder 12. Secondary horizontal tail 12a. Inclined portion L. Horizontal centerline

Claims (5)

Provided on the right and left outer side faces of the main body, each wingtip shorter side wing than the blade length is the chord length, each side body provided, the horizontal stabilizer between the rear inner faces of both side carcass, wind from side wing rear vent hole The horizontal core of the horizontal tail is positioned at the same level as the horizontal core of the main fuselage, and the front end of the side wing is retracted from the front end of the main fuselage, and the rear end is aligned with the rear surface of the main fuselage. is, the front end of the side body is retracted from the main body of the front end, and located in front of the front end of the side wings, also the rear end protrudes rearward from the main body of the rear end, a longitudinal side forms the tailplane A flying boat characterized in that the upper surface is flat, the tip end of the lower surface has a large inverted wing cross section, and a propelling device is provided at the rear of the upper surface of the main fuselage. The main fuselage has a thick tip edge in plan view and a narrow rear part.In side view, the upper part is larger than the horizontal core passing through the vertical center of the flying boat, and the bottom surface is substantially the same height as the bottom surface of the side wing. The side body is configured such that the lower side is larger than the upper part of the horizontal core, the bottom surface is positioned lower than the bottom surface of the main body, and the rear lower part is also ascending. Flying boat. Side tail wings having a chord length larger than the wing length from the rear end to the middle part are fixed to the outer side surfaces of the left and right side fuselage, the upper surface thereof is flat, and the lower surface has a leading edge portion in the side view. The flying boat according to claim 1, wherein the flying boat has a reverse wing cross-sectional shape bulging in a direction. In the upper surface of the horizontal tail, the upper surface of the sub horizontal tail provided on the upper surface of the vertical tail is made flat, and the lower surface is also the reverse blade cross-sectional shape with the leading edge bulging downward, and both side ends obliquely upward and outward. flying boat according to any one of claims 1 to 3, characterized that you have inclined. The propeller is intended to include a propeller, total air flow by pulp propeller be inclined toward the rear direction front end portion of its is, claims, characterized in that it has to pass through the upper surface of the horizontal stabilizer 1 4. A flying boat according to any one of 4 above.

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