JPH061920Y2 - Winged seaplane - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a winged seaplane, and more particularly to an improved structure of an ultralight aircraft having a wing attached to a boat.

(Prior art) Various ultra-light aircraft (ULTR) as sky sports in recent years
A LIGHT PLANE) [ULP] has become widespread, and winged seaplanes taking off and landing on the water have come into the spotlight.

In this winged seaplane, a horizontally long triangular wing with a pointed tip is installed substantially horizontally above a boat section having a propeller with an engine in the rear part of a cockpit through a strut to propel the propeller. It uses water to take off and land and fly.

By the way, in this type of light-weight seaplane, the laterally long wing portion is often tilted by the wind and waves during traveling on the water, and the side end of the wing is watered. In such a case, the attitude of the blade may be restored naturally, but depending on the condition of waves or wind, a phenomenon occurs in which the edge of the blade covers the water and the blade is drawn into the water from the portion.

This will be described with reference to the attached drawings. As shown in FIG. 10, when the lightweight airplane 90 tilts and the side end tip of the laterally long wing portion 92 lands on and is covered with water w, the airplane itself is light and the wing Being long, the wing is drawn into the water from the side edge of the wing. Then, due to the propelling force of the propeller of the boat portion 91, a force that rotates diagonally forward acts as indicated by an arrow mark a in the figure.

FIG. 11 is a schematic view of the airplane as viewed from above. As described above, the airplane 90 is slanted from the wing 92, and as a result, the airplane 90 is overturned in an upside down state. Such a slipping phenomenon occurs instantly on the sea where wind and waves are strong, and poses a safety problem for passengers.

(Problems to be Solved by the Invention) The present invention has been proposed mainly for the purpose of providing a so-called floating / sinking structure for preventing the capsizing of an airplane due to such landing of wings.

(Means for Solving the Problem) The present invention is directed to a sheet-shaped or plate-shaped wing portion having a horizontally long, generally triangular shape with a sharp tip through a column above a boat portion having a propeller with an engine at the rear of the cockpit. A winged seaplane characterized in that, when provided substantially horizontally, the front center part including the tip of the wing part is configured as a floating structure part having buoyancy.

(Embodiment) An embodiment of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is an overall perspective view of a winged seaplane showing an embodiment of the present invention, and FIG. 2 is a boat portion in which the wing portion is omitted. FIG. 3 is a side view of the wing portion, FIG. 3 is a rear view of the wing portion, FIG. 4 is a top view of a main portion showing the float portion, FIG. 5 is a partial sectional view of the wing portion front end portion, and FIG.
FIG. 7 is a sectional view showing another embodiment of the front end portion of the wing portion,
FIG. 8 is a sectional view of a pipe, FIG. 8 is a front view showing a state of inclination of an airplane according to the present invention on the water, and FIG. 9 is a side view of the same.

As shown in FIG. 1 and FIG. 2, the winged seaplane 20 of the present invention includes a boat portion 21, a post 22, 23,
2 is an ultralight aircraft having a wing portion 40 attached thereto via a watercraft 24, and as will be better understood from FIG. 2, a propeller 25 with an engine 26 provided at the rear of the cockpit 29 of the boat portion 21 It is configured to be able to run and fly.

Reference numeral 25A in the drawing is a safety cover of the propeller 25, 27 is a fuel tank, 28 is a control bar for operating the inclination of the blade, and 30 is a horizontal bar for attaching the blade.

In addition, in the embodiment, the boat portion 21 is illustrated as an inflatable rubber boat, but the boat portion 21 is not necessarily limited to this type. The same applies to other configurations.

FIG. 3 is a back view of the wing portion 40. The wing portion 40 is formed in a laterally long triangular shape having a sharp tip as shown in the drawing, and the front central portion including the tip of the wing portion 40. 45 has buoyancy and is configured as a floating structure. In FIG. 3, the floating body structure portion 45 is indicated by diagonal lines.

Reference numerals 41, 42 and 43 in FIG. 3 are pipe members that support the wing portion 40.

Generally, as shown in FIG. 5, the front portion of the wing portion 40 has a double structure (so-called double surface structure) by the sheet-shaped wing members 40A and 40B, so that the floating structure is as shown in FIG. Advantageously, by the air chamber 46. Alternatively, if necessary, or if the wing member is plate-shaped, as shown in FIG.
It is also possible to realize a floating structure by using a filler 47 of closed-cell plastic foam such as polyurethane resin.

The floating structure portion may be formed by being divided into small sections, as shown by the broken line in FIG.

As described above, when the front central portion 45 of the wing portion 40 is configured by the floating body structure portion having buoyancy, the wing portion 40 should be slid forward to the water, as will be understood from FIG. Even when it comes into contact with, the wings themselves are prevented from being instantly and easily submerged in water.

Further, in this embodiment, the floats 50, 50 are provided at both side ends of the wing portion 40. This float 5
0 may be, for example, an air bag type as used in the embodiment, a plastic hollow molding, or various floating bodies such as plastic foam. Float 5
As shown in FIG. 4, 0 has an arm 51 having a mounting portion 53 and is detachably attached to the front pipe 41 of the wing portion 40.

FIG. 8 shows a state in which a seaplane in which the floats 50, 50 are provided at both ends of the wing portion 40 is inclined on the water. As can be understood from the figure, the buoyancy of the float 50 causes the wing portion 40 It is possible to prevent the edge from being submerged.

Further, as shown in FIG. 7, the wing portion 4 of this embodiment is
0, each pipe member 41, 42, 4 supporting the wing
A lightweight filler 48 is filled in the inside of 3 with a closed-cell plastic foam such as a polyurethane resin, so that water does not enter. In a normal hollow pipe structure, water inevitably intrudes from the joint J or the like even if plug members are inserted into both ends. Therefore, if a lightweight plastic foam having a small specific gravity is filled, water can be prevented from entering even if the wing portion 40 is submerged in water, and troublesome draining of water after the fact becomes unnecessary. .

(Operation / Effect) As shown and described above, according to the present invention, in a seaplane in which a horizontally elongated wing portion having a sharp tip is attached to a boat portion having a propeller with an engine, the wing portion is provided. Since the center part of the front part including the tip of the wing has a floating structure, the front end of the wing part has buoyancy even if the side end of the wing part gets wet, so it is possible to prevent rapid overturning of the airplane. It is possible and contributes greatly to the safety of so-called ultra-light aircraft of this type.

[Brief description of drawings]

FIG. 1 is an overall perspective view of a winged seaplane showing an embodiment of the present invention, FIG. 2 is a side view of a boat section without the wing section, FIG. 3 is a rear view of the wing section, and FIG. FIG. 5 is a partial cross-sectional view of the front end of the wing, FIG. 6 is a cross-sectional view showing another embodiment of the front end of the wing, and FIG. 7 is a cross-sectional view of a pipe. FIG. 8 is a front view showing an inclining state of the airplane on the water according to the present invention, FIG. 9 is a side view of the same, FIG. 10 is a front view showing an inclining state of the airplane on the water, and FIG. 11 is the same. It is the top view. 20 ... Seaplane with wings, 21 ... Boat part, 25 ... Propeller, 40 ... Wing part, 45 ... Front central part (floating body structure part),
50 ... Float.

Claims (1)

[Scope of utility model registration request] 1. A sheet-like or plate-shaped wing portion having a horizontally long, generally triangular shape with a pointed tip is provided substantially horizontally above a boat portion having a propeller with an engine at a rear portion of a cockpit via a column. A winged seaplane, characterized in that the front center portion including the tip of the wing portion is configured as a floating body structure portion having buoyancy.