WO2019101892A1

WO2019101892A1 - Floating platform for receiving aircraft, comprising a stabilization device

Info

Publication number: WO2019101892A1
Application number: PCT/EP2018/082281
Authority: WO
Inventors: Serge RYBAC; Alain Magnier
Original assignee: Rybac Serge; Alain Magnier
Priority date: 2017-11-22
Filing date: 2018-11-22
Publication date: 2019-05-31
Also published as: FR3073813B1; FR3073813A1

Abstract

The invention relates to a floating platform (1) for receiving aircraft (2), comprising: a structure that is able to be at least partially submerged and has a receiving deck (4) intended to accommodate the aircraft (2); floats secured to the structure in order to ensure the ability of the platform (1) to float; means for stabilizing the platform, characterized in that the stabilizing means comprise propellers secured to the structure and each mounted on a propeller shaft with an axis oriented such that the force exerted on the platform, on account of the rotation of each propeller, comprises a component perpendicular to the receiving deck.

Description

Floating platform for receiving aircraft comprising a stabilizing device

The field of the invention is that of the design and manufacture of floating platforms for the reception of aircraft. More specifically, the invention relates to a floating platform for receiving flying aircraft comprising a stabilization device.

Aircraft such as aircraft or helicopters primarily, are intended to carry passengers or goods from one place to a second remote location. However, the transport of passengers in particular can be carried out in closed loop having origin and arrival a single place. Generally, the first and second places are airports or land aerodromes built near cities.

However, some places are not accessible by land and the landing of a flying means of transportation is impossible. It was then developed aircraft that can land, that is to say, land on a lake such as a lake or an ocean. For example, seaplanes can be mentioned.

Tourism and certain professional activities have also called for changes to the conditions of transport. For example, some tourists or professionals want to discover islands or archipelagos, some places inaccessible by land or dangerous access such as volcanoes, disaster areas or water bodies. Others wish to reach certain nautical activities far from the coast, such as diving starting points for example.

For these activities, an efficient means of transportation is the helicopter. Indeed, a helicopter can take off and land or land vertically. The helicopter is therefore less restrictive than the airplane or the seaplane since it can land or land in a small space.

In addition, during a landing, a seaplane creates turbulence in the water such as waves or sound waves that can be harmful to wildlife, flora and tourists or professionals near the landing strip. This problem is nevertheless mitigated by the helicopters.

To avoid these nuisances, landing platforms have been developed. These platforms are either floating or anchored in the seabed.

These platforms therefore evolve in the marine environment and are subject to marine conditions such as swells or currents that can affect their stability and / or accessibility.

To meet the need for stability, means of stabilizing platforms have been developed.

Patent document GB317393 (Reno) describes an aircraft landing platform comprising:

a structure carrying a landing track for aircraft;

floats mounted sliding relative to the structure to ensure the buoyancy of the platform, and

- Stabilization means of the platform.

The stabilizing means comprise pipes that open into the floats to fill them with compressed air or water in order to immerse them or on the contrary to make them float. The stabilization means are therefore dynamic as a function of the swell.

The water or air filling of the floats is carried out according to the agitation of the water body so as to keep the reception track stable.

Such a platform stabilization technique is however not without inconvenience.

Indeed, the stabilization means of the platform require a large infrastructure including compressors and pumps, as well as pipes connecting the floats to the compressors and pumps.

All this infrastructure represents a significant weight whose distribution must be made so as not to impact the stability of the platform. In addition, pumps and compressors require a significant amount of energy to operate.

In the case of fossil fuel type liquid fuel, generally used at sea, fuel tanks must be used on the platform. These tanks cause liquid hull phenomena, which are highly detrimental to the stability of the platform, which increase as fuel consumption increases.

Moreover, the filling of air or water floats is long and unreactive, especially when the sea is agitated, or even unleashed. The stability of the platform is then affected which makes it difficult to receive the aircraft.

The invention particularly aims to provide a floating platform aircraft, providing good stability.

The invention also aims to provide such a platform that ensures the safety of aircraft passengers

The invention further aims to provide such a platform whose operation is energy independent and in operation.

These objectives, as well as others that will appear later, are achieved thanks to the invention which has for object a floating platform for receiving aircraft, comprising: a structure capable of being at least partially immersed and having a floor receiving area to accommodate aircraft;

- Floats integral with the structure to ensure the buoyancy of the platform;

means for stabilizing the platform,

characterized in that the stabilizing means comprise, propellers secured to the structure and each mounted on a propeller shaft axis oriented so that the force exerted on the platform, due to the rotation of each propeller, comprises a component perpendicular to the receiving floor.

The perpendicular component of the force exerted by the propellers on the platform makes it possible to ensure a substantially vertical movement of the platform, in favor of stability.

Advantageously, each propeller is mounted within a water pipe gun extending around the propeller shaft. Such stabilization means ensure a better stabilization of the platform according to the hollows and peaks of the swell while limiting the energy consumption of the stabilizing means. When the swell forms a ridge, the platform follows the movement of the water with its floats to reach a high position above the water level and, when the swell forms a hollow, the stabilizing means are actuated for that the water sucked into the barrels by the propellers sees its power increased, especially by venturi effect, so as to maintain the platform substantially in the high position. The platform does not fall into a low position at the bottom of a hollow, which guarantees a better stability of the platform, in all circumstances or almost.

According to a particular embodiment, the structure is of polygonal shape and comprises as many water pipe guns as angles of the polygon, a gun being present under each vertex of the polygon. Advantageously and preferably the polygon is a hexagon or an octagon.

The regularly distributed guns make it possible to ensure a good distribution of the thrust generated by the flows of water created in the pipeline guns.

Preferably, the platform comprises means for controlling the stabilization means. Such control means make it possible to ensure an operating autonomy of the platform, which can thus be adapted to the meteorological conditions so as to maintain its stability and in particular the horizontality of the reception floor to favor the reception of aircraft.

Advantageously, the structure comprises legs extending substantially perpendicularly to the receiving floor.

The legs can support the platform when it is out of the water for maintenance reasons for example. Wheels can also be provided on the legs to facilitate the movement of the platform on a floor. Preferably, the wheels are rotatably mounted on a lower end of the legs. Preferably at least one and preferably several and preferably each of the legs carry at least one axis. This axis extends on either side of the leg in a direction perpendicular to the main direction of extension of the leg. This axis carries at least two wheels, so that the wheels are arranged on either side of the leg.

According to one embodiment, the shaft is rotatably mounted on the leg.

According to another embodiment, the axis is fixed to the leg and the wheels are mounted in rotation on the axis. In this case, the axis may for example be composed of two portions of axes distant from each other, each attached to the leg. In this embodiment, the leg may have a tubing extending predominantly vertically. Each axis has an end fixed to the pipe and extends towards the wheel. This makes it possible to have no axis passing through the inside of the tubing. If it is expected that the propellers and the tube have their axes aligned, it allows not to disturb the propellers. The control of the attitude of the platform is thus improved.

Advantageously, the legs when immersed allow to have a keel effect which improves the stabilization of the platform. The legs being multiple, it allows to further increase the stabilization.

According to a particular embodiment, the water pipe guns of the stabilizing means are mounted on the legs.

The particular positioning of the water pipe guns allows the stabilization means to be constantly in the water to ensure the stability of the platform.

Preferably, the structure is made of wire mesh girders and comprises a concentric outer ring and inner ring, as well as spokes extending from the outer ring to a center of reinforcement.

The use of metal mesh beams allows the structure to offer a good compromise between lightness and strength.

According to an advantageous embodiment, the platform comprises security means comprising a railing.

The security means prevent the users of the platform can not fall from it and fall into the water. Moreover, the railing can be used as a handrail to facilitate the movement of users on the platform.

According to one particular aspect, the railing comprises movably mounted panels on the structure between:

an access position in which the panels are substantially parallel to the receiving floor, and

a protective position in which the panels are substantially perpendicular to the receiving floor.

The mobility of the panels favors:

receiving the aircraft by limiting the effect of turbulence on the platform by creating a confined space, in their access configuration, and the safety of the users of the platform, in their protective position.

Preferably, the guardrail carries solar panels.

Solar panels allow the creation of electrical energy on the platform, the energy thus created participating in autonomy, particularly in terms of energy independence, the platform.

Advantageously, the floats define a sealed volume and are made of a flexible material so as to be deformable depending on the pressure in the sealed volume. Advantageously, the floats comprise at least two compartments and preferably three watertight compartments. This in particular to secure the buoyancy in case of drilling a float.

In this case, the platform also comprises a compression and / or air extraction assembly for injecting or sucking air into the sealed volume of each of the floats.

It is thus possible to adapt the pressure prevailing in the floats to adapt to the weight of the flying transport means that must be received on the platform.

Thus, the platform can be used for a wide variety of aircraft. In other words, it is possible to adapt the waterline of the platform to the weight of the aircraft it receives.

One of the embodiments of the invention advantageously relates to a floating platform for receiving aircraft, comprising:

a structure adapted to be at least partially immersed and having a receiving floor for receiving the aircraft;

- Floats integral with the structure to ensure the buoyancy of the platform;

- Stabilization means of the platform.

Advantageously, the structure comprises a plurality of legs, configured to extend substantially perpendicularly to the receiving floor, each of the plurality of legs comprising at least one wheel configured to allow the platform to move on a solid surface, in which the means stabilizers are configured to be mounted on the legs and comprise, propellers secured to the structure and each mounted on a shaft shaft) oriented so that the force exerted on the platform, due to the rotation of each propeller, comprises a component perpendicular to the receiving floor and in which the floats define a sealed volume and are made of a flexible material so as to be deformable according to the pressure prevailing in the volume waterproof, and in that it also comprises a compression and / or air extraction assembly for injecting or sucking air into the sealed volume of each of the floats to adapt a platform waterline the weight of the aircraft it receives.

Advantageously, the platform comprising a dynamic float system associated with the presence of wheel on the legs further improves the stability of said platform. Indeed, the wheels act as a ballast which is compensated by the floats which allows a better stability. In addition, depending on the types of wheels (with tread filled with air or not), it is possible to vary the buoyancy of the entire platform. Finally, the wheels being advantageously located at the second end of the legs, this allows the creation of a base on each of the legs which enhances the keel effect of the latter and thus allows in combination with the dynamic floats to enhance the stability platform 1.

The invention also relates to an assembly comprising a plurality of platforms in which each of the platforms are assembled to the adjacent platform by means of attachment means comprising a floor and cylinders.

Optional features of the invention, which can be implemented in a combined or alternative manner, are indicated below:

o The floating platform for aircraft reception includes:

- Floats integral with the structure to ensure the buoyancy of the platform;

- Stabilization means of the platform.

Advantageously, the stabilizing means comprise, propellers secured to the structure and each mounted on an A-axis propeller shaft oriented so that the force exerted on the platform, due to the rotation of each propeller, comprises a component perpendicular to the receiving floor,

each propeller is mounted within a water pipe gun extending around the propeller shaft,

the structure is of polygonal shape and includes as many water channeling cannons as angles of the polygon, a gun being present under each vertex of the polygon,

the platform comprises means for controlling the stabilization means, the structure is made of metal mesh beams and comprises an outer ring and a concentric inner ring as well as radii extending from the outer ring towards a center of reinforcement, the platform comprises security means comprising a railing, the railing comprises movable mounted panels on the structure between:

an access position in which the panels are substantially parallel to the reception floor, and

a protective position in which the panels are substantially perpendicular to the reception floor,

the platform includes a skirt carrying solar panels,

the floats define a sealed volume and are made of a flexible material so as to be deformable according to the pressure prevailing in the sealed volume, and in that it also comprises a compression and / or extraction assembly of air intended to inject or suck air into the sealed volume of each of the floats to adapt a waterline of the platform to the weight of the aircraft which it receives,

the at least one wheel comprises a rim from which rays comprising cells extend to a contact surface configured to be in contact with a solid surface,

the cells of the spokes are configured to absorb shocks by point deformation,

the at least one wheel is mounted on an axis preferably orthogonal to the main direction of extension of the leg, said axis being mounted on one of the leg and a frame pivoting about the main direction of extension of the legs,

the chassis comprises a fixed portion relative to the leg and a movable portion relative to the fixed portion and configured to carry the axis,

each of the legs comprises at least two wheels, and in which the two wheels are mounted on the same axis,

each of the legs comprises at least two wheels, and wherein the two wheels are mounted on two portions of axes, spaced apart from each other, and each attached to one of the pivoting frame and the leg.

Other characteristics and advantages of the invention will emerge more clearly on reading the following description of a preferred embodiment of the invention, given by way of illustrative and nonlimiting example, and the appended drawings among which:

Figure 1 is a perspective view of the floating platform according to the invention, according to a first configuration;

Figure 2 is a perspective view of the platform in a second configuration;

Figure 3 is a perspective view showing the structure and the floats of the platform according to the invention;

Figure 4 is a top view of the structure of the platform according to the invention; Figure 5 is a view similar to that of Figure 4 showing a set of compression and / or air extraction in the floats;

Figure 6 is a front view of a crutch of the structure of the platform according to the invention, on which is mounted a portion of the stabilizing means of the platform;

FIG. 7 is a schematic perspective view of an alternative embodiment of the structure according to the invention, and

Figure 8 is a side view of the floating platform according to the invention.

Figures 9 to 12 show different platforms assembled together to form sets;

Figures 13a to 13c show the leg associated with a pivoting frame carrying the wheels.

As represented in FIGS. 1 and 2, a floating platform 1 for receiving aircraft 2, according to the invention, comprises:

a structure 3 of polygonal shape defining a general frame of the platform 1,

a reception floor 4 of the aircraft 2,

security means 5 of the users of the platform 1,

floats 6, and

stabilization means 7.

The structure 3, visible in FIGS. 3, 4, 5 and 7, comprises a reinforcement formed of lattice girders.

The frame comprises an octagonal peripheral ring 31 formed of eight butted beams to each other. Between two contiguous beams, a beam forming a radius 32 extends inwardly of the frame, to a center of reinforcement 33. The frame thus comprises eight spokes 32.

In addition, the armature comprises an inner ring 34 concentric to the outer ring 31 and located between the center of frame 33 and the outer ring 31. The inner ring 34 is formed of beams each extending between two adjacent radii 32. Advantageously, in one embodiment shown in FIGS. 9 to 12, at least one additional radius 32b extending between the concentric inner ring 34 and the outer ring 31 may be added and between two adjacent radii 32. Preferably, the at least one additional radius 32b has the same characteristics as the spokes 32, with the exception of its length which lies solely between the concentric inner ring 34 and the outer ring 31. For example, a total of eight radii additional 32b can be added.

The structure 3 also comprises legs 35 (one of which is illustrated in detail in FIG. 6) extending from the armature substantially perpendicular thereto, in a direction opposite to the receiving floor 4. In other words , the legs 35 extend substantially perpendicularly to the receiving floor 4, under it.

Legs 35 are each formed of a wire mesh beam. They comprise a first end 351 by which they are fixed to the frame, and an opposite second end 352 on which wheels 353 are mounted. These wheels 353 serve as support for the platform 1 on a floor, in particular in a hold during maintenance operations of the platform 1. Advantageously, the wheels 353 may be conventional wheels comprising a rim and a tread. Said tread may be inflated with air or be an airless tread.

According to another embodiment, the rims are perforated and have for example a structure with cells such as a honeycomb structure. Preferably the tread does not include air. In this embodiment, the spokes are replaced by the honeycomb structure.

This embodiment has the advantage of producing wheels 353 that do not comprise a volume of air. This avoids the creation of unnecessary float elements. Moreover, it reduces the buoyancy of Archimedes which would be generated by elements placed under the surface of the water. In addition, the shocks during the rolling of the wheels 353 are absorbed by the honeycomb structure.

In this preferred embodiment, the tread comprises a first annular portion in contact with the rim of the wheel 353 and a second annular portion in contact with the ground having a more conventional format. The first annular portion has through openings or not, for example cells. Preferably these openings form a honeycomb structure. The second annular portion, intended to roll on the ground is continuous.

More particularly, the platform 1 comprises eight legs 35, each leg 35 being located under a radius 32, at the outer ring 31 of the frame, that is to say at a vertex of the octagon. Advantageously, the legs 35 when immersed allow to have a keel effect which improves the stabilization of the platform 1. The legs 35 being multiple, it allows to further increase the stabilization. In addition, the presence of the wheels 353 advantageously located at the second end 352 of the legs 35, this allows the creation of a base on each leg which reinforces the keel effect of the latter and thus allows in combination with the floats to strengthen the stability of the platform 1.

The wire mesh of the beams of the frame and legs 35 is formed by forming a sheet of tubes cut and welded to each other. The beams then have the shape of a hollow cylinder.

The receiving floor 4 is formed of blocks assembled to each other and each fixed to the frame. Once formed, the floor 4 completely covers the frame.

The security means 5 are located at the outer periphery of the platform 1, and more precisely on the outer ring 31.

The security means 5 comprise a railing 51 extending along the outer periphery of the outer ring 31.

More specifically, the guardrail 51 comprises a plurality of contiguous panels 52 forming, step by step, a substantially octagonal peripheral edge.

Each side of the octagon comprises two contiguous panels 52.

The panels 52 of the guardrail 51 are movably mounted on the frame between: an access position in which the panels 52 are substantially parallel to the receiving floor 4 (FIG. 1), and

a protective position in which the panels 52 are substantially perpendicular to the receiving floor 4 (Figure 2).

In their access position, the guardrail panels 51 allow easy access to the receiving floor 4 for the aircraft 2 and eliminates the effects of vortices that can be created by the blades of a helicopter that bends the wind in a plane. closed space for example.

In their protective position, the panels 52 of the guardrail 51 form a flange to the receiving floor 4 to prevent a person from falling off the platform 1.

The panels 52 are controlled centrally by a control unit not shown in the figures. However, at least one of the panels 52 on the same side can be controlled independently of the others, this panel 521 being located in the vicinity of a staircase 8 or an access bridge connecting the platform 1 to a ship, to another adjacent platform or shore.

The independently controlled panel 521 can then be in the access position while the other panels 52 are in the protection position, which makes it possible to secure the movement of users on the reception floor 4 and access or evacuation. receiving floor 4.

According to the embodiment illustrated in the figures, the platform comprises two panels 521 that can be controlled independently of each other.

The floats 6 are positioned under the frame of the structure 3 and secured thereto.

More specifically, the platform 1 comprises two series of floats 6.

A first series comprises eight floats 61 each located under a beam forming the outer ring 31 of the frame.

A second series comprises four floats 62 each located under a beam forming a radius 32 of the armature, the four floats 62 of the second series being regularly spaced from each other.

The floats 6 have a cylinder shape comprising a tubular outer casing closed at each of its ends by a solid wall so that the floats 6 form sealed volumes.

Advantageously, the floats 6 are made of a flexible material so as to be deformable depending on the pressure in the sealed volume.

The floats 6 are connected to a compression and / or air extraction assembly 63 for injecting or otherwise sucking air into the sealed volume of each of the floats 6. The assembly 63, as shown in FIG. as shown in Figure 5, includes: at least one solenoid valve 631 allowing the suction of air to inflate the floats 6,

at least one solenoid valve 632 for extracting air from the floats 6,

tanks 633 for storing the sucked air,

at least one overpressure safety valve,

valves 635 for connecting the assembly 63 to each of the floats 6, and

at least one pressure regulator 636.

Thus, it is possible to adapt the waterline of the platform 1 according to the weight of the flying transport means 2 which is received on the receiving floor 4. According to the illustrated embodiment, the waterline of the platform 1 is located 60 cm below the reception floor 4.

In this embodiment, the eight floats 61 of the first series have a diameter of 100 cm and a length of 500 cm, and the four floats 62 of the second series have a diameter of 100 cm and a length of 300 cm.

From these values, and using the assumption that the floats are submerged at most half of their diameter, a maximum load weight P of the platform 1 is determined.

For this, we use the following formula of Archimedes' thrust:

P = p.V.

Or :

P is the density of the seawater, namely 1.025,

V is the immersed volume of the floats 6 (in m ^), and

g is the gravitational attraction (in N / kg), ie 9.81 N / kg at sea level.

Using the numerical values mentioned above, we thus obtain:

P = 1 .025 * [(8 * ((5 * 0.5 ² * p) / 2)) + (4 * ((3 * 0.5 ² * p) / 2))] * 9.81

P = 1.025 * 20.41 * 9.81

P = 205228 KG.

In general, the figures mentioned above are given for information only. Also, other values could be used to obtain a similar result.

The stabilization means 7 comprise water pipe guns 71, secured to the structure 3, and extending substantially perpendicularly to the receiving floor 4.

According to the embodiment illustrated in the figures, the stabilization means 7 of the platform 1 comprise eight guns 71, the guns 71 being each located inside. of a beam of a leg 35.

The guns 71 extend coaxially to the beams and are located near the second end 352 of the legs 35, so that the guns 71 are constantly maintained below the waterline of the platform 1, that is to say under the floats 6.

According to the principle of the invention, the stabilization means 7 furthermore comprise, for each barrel 71:

a motor 72,

a shaft 73 coupled to the motor 72 by a first end, and

a propeller 74 integral with the shaft 73, at a second end thereof.

The motor 72 is here a reversible motor capable of rotating the propeller in a clockwise or counterclockwise direction.

For a gun 71 considered, the motor 72 is fixed to the leg 35 carrying the barrel 71 considered, and the shaft 73 extends inside the barrel 71, and the propeller 74 is then located at a level. end of the barrel 71 opposite the floor 4.

Each propeller shaft 73 has an axis A oriented so that the force exerted on the platform 1, due to the rotation of each propeller 74, comprises a component perpendicular to the receiving floor 4.

According to the embodiment illustrated in the figures, the force exerted on the platform 1, due to the rotation of each propeller 74, comprises only a component perpendicular to the receiving floor 4.

The platform 1 also comprises control means 9 stabilizing means 7. The control means 9 are for example located partly below the floor 4 and partly on the stairs 8.

The control means 9 comprise sensors 91, for example of the gyroscopic type, making it possible to determine the position of the platform 1 with respect to the level of the water and to determine the presence of waves and their intensity.

As illustrated in FIGS. 4 and 6, the control means 9 comprise eight sensors 91, located under the floor 4, between the latter and the motors 72. The sensors 91 are distributed so that a sensor 91 is located each corner of the platform 1.

The control means 9 further include power relays for the rotation of the propeller 74 in both directions of rotation, a battery and an emergency stop member.

Finally, the platform 1 also comprises a skirt 10 extending from the receiving floor 4 to the legs 35 and forming a frustoconical portion. The skirt is formed of 101 butted sections and surrounding the structure 3.

The skirt 10 allows in particular to hide the frame of the structure 3 and the floats 6 so as to make the platform aesthetic and safe by limiting access to the structure to a bather.

As illustrated in FIG. 2 in particular, the skirt 10 carries solar panels 102 capable of transforming the light energy into electrical energy for the operation of the platform 1. More particularly, the solar panels 102 are each carried by a section 101 of the skirt 10.

The solar panels 102 are then all connected to an energy plant (not shown in the figures) comprising batteries and other devices for storing, converting and restoring the electrical energy created.

In use of the platform 1, the stabilization means 7 ensure the stability of the platform 1 according to the weather conditions and in particular the presence of waves.

For this, the control means 9 define a control rule for controlling the stabilizing means 7 so as to maintain the stability of the platform 1, including the horizontality of the floor 4 to facilitate the reception of aircraft 2.

The sensors detect the presence of waves and control the motors 72 so as to rotate the propellers 74.

In each barrel 71, the rotational drive of the propeller 74 generates a depression in the barrel 71 so that water is sucked into the barrel 71, passes through said barrel 71 and is ejected by the end of the barrel 71 located at the second end 352 of the leg 35.

The barrel 71 increases the power of the water that passes through it so that the water propelled at the outlet of the barrel 71 allows the lifting out of the water or the attraction in the water of the platform 1.

During operation of the stabilizing means 7, some motors 72 may drive their associated propeller 74 clockwise while other motors 72 may drive their associated propeller counterclockwise.

The control system 9 then controls the speed of rotation of the propellers 72 to avoid the elevator effect of the platform 1.

Thus, when the platform 1 is on a wave ridge, the control system 9 sends the motors 72 information to reduce their speed or rotate it in the opposite direction, so as to reduce or even eliminate the movement of the platform 1 out of the water.

On the other hand, when the platform 1 is in a wave recess, the control system 9 sends to the motors 72 information to increase their speed of rotation, thus increasing the speed of rotation of the associated propeller 74 and therefore the displacement platform 1 out of the water.

Thus, the platform 1 remains at a substantially constant height regardless of its position in a hollow or on a wave crest.

The stability of the platform 1 regardless of weather conditions thus facilitates the reception of aircraft 2.

Moreover, the stability of the platform 1 ensures the comfort of its users since the elevator effect and therefore seasickness is limited or even eliminated.

In addition, the legs 35 and in particular the wheels 353 allow the displacement of the platform 1 on land to perform its maintenance for example or protect it when a storm is announced. As seen in Figure 8, the wheels 353 are spaced from the skirt 10 to when the platform is moved, only the wheels 353 are in contact with the ground so that the platform does not rub by the ground at the risk of being damaged.

Preferably, the wheels 353 are rotatably mounted on a lower end of the legs 35. Preferably at least one and preferably several and preferably each of the legs carry at least one axis 354. This axis extends from one side to the other. else of the leg in a direction perpendicular to the main direction of extension of the leg. This axis carries at least two wheels 353, so that the wheels 353 are disposed on either side of the leg 35.

According to one embodiment, the shaft is rotatably mounted on the leg.

According to another embodiment, the axis 354 is fixed to the leg 35 and the wheels 353 are rotatably mounted on the axis. In this case, the axis may for example be composed of two portions of axes 354, 354 spaced apart from each other, each fixed to the leg 35. In this embodiment, the leg 35 may have a tubing extending mainly vertically. Each axis has an end fixed to the pipe and extends towards the wheel. This makes it possible to have no axis passing through the inside of the tubing. If it is expected that the propellers 74 and the tube have their axes aligned, it allows not to disturb the propellers 74. The control of the attitude of the platform is improved.

Finally, in one embodiment shown in Figures 13a to 13c and compatible with the other embodiments described above, the axis 354 or the two axis portions 354 are mounted on a frame 355 pivoting around the main direction of extension of leg. The frame 355 advantageously comprises a fixed portion 356 relative to the leg 35 and a movable portion 357 relative to the fixed portion 356 carrying the axes 354 of the wheels 353. The pivoting of this frame is advantageously achieved through ball bearings. This pivoting allows an orientation of the wheels 353 around the main direction of extension of the leg and thus allows easier handling of the platform on the ground.

According to one embodiment, this pivoting frame 355 is configured to pivot from a closed position of the second end 352 of the leg 35 to an open position of the second end 352 of the leg 35 and vice versa. This thus provides an additional degree of freedom in controlling the stabilization of the platform 1. Indeed, for example in the case of a loss of control of the propellers 74, the use of closing the second end 352 of the leg 35 ensures a stop of the fluid propulsion. Finally, this also allows a regulation of the fluid flow delivered by the propeller 74 by not closing or opening only part of said second end 352 of the leg 35.

Finally, the presence of solar panels 102 makes it possible to make the platform 1 energy-independent and to reduce the instability related to liquid hull effects generated by the use of fossil energy stored in on-board tanks on the platforms of the prior art. .

Advantageously, each platform 1 can be dismantled, in particular for transport from one remote point to another, or for storage. To do this, the structure 3 of the entire platform is made with hollow aluminum lattice girders. The entire structure 3 is particularly stiffened by the floor also aluminum. All the beams of the structure 3 being held together by nuts and screws. It is recalled that the floats 6 are slidably mounted relative to the structure 3 to ensure the buoyancy of the platform 1 and their disassembly facilitated.

Each side of the polygon of the platform 1, and preferably the octagon, comprises hooking means. These hooking means make it possible, in particular, to secure several platforms 1 to one another and thus to create a set 400 of platform 1 as illustrated in FIGS. 9 to 12. The creation of a set 400 of platforms 1 makes it possible, in particular, as a function of the arrangements of a part to accommodate a larger number of aircraft, and other parts to ensure greater stability of the whole. The assembly 400 having a surface and a larger mass, it is less sensitive to the small swell. In addition, the creation of sets 400 of platforms 1 is facilitated by the octagonal preferred form. The octagonal shape of the platform 1 makes it possible, for example, to arrange four platforms and to create an empty space between the four platforms 1. This may, for example, enable the construction of a natural swimming pool as illustrated in FIG. according to the other possible configurations of the assembly 400 can be created a space between two platforms 1 to create an access port to the assembly as shown for example in Figures 10 and 12. Each of the platforms 1 having control means 9 which associated with each other make it possible to improve the stabilization of the assembly 400. Synchronization means between the different control means 9 of the platforms 1 are also present. The assembly 400 being controlled by a computer and at least one gyroscope which guarantees a horizontal attitude of each of the platforms 1.

In the hexagonal embodiment of the platform, the assembly can constitute a substantially continuous plateau.

The connection of two platforms 1 between them is done by the attachment means.

Advantageously, the attachment means comprise a movable floor 410 for absorbing relative movements between the platforms 1 caused by the swell. Said floor 410 is connected to the platforms 1 by cylinders 420 preferably hydraulic to absorb the movement of the waves and dampen the shocks between the platforms 1.

Claims

Floating platform (1) for receiving aircraft (2), comprising:

a structure (3) adapted to be at least partially immersed and having a receiving floor (4) for receiving the aircraft (2);

- Floats (6) integral with the structure to ensure the buoyancy of the platform

(1);

stabilizing means (7) for the platform (1),

characterized in that the structure (3) comprises a plurality of legs (35), configured to extend substantially perpendicular to the receiving floor (4), each of the plurality of legs (35) comprising at least one wheel (353). configured to allow the displacement of the platform (1) on a solid surface, is in which the stabilizing means (7) are configured to be mounted on the legs (35) and comprise propellers (74) secured to the structure (3). ) and each mounted on a propeller shaft (73) of axis (A) oriented so that the force exerted on the platform (1), due to the rotation of each propeller (74), comprises a component perpendicular to the receiving floor (4) and in which the floats (6) define a sealed volume and are made of a flexible material so as to be deformable according to the pressure prevailing in the sealed volume, and in that it also comprisesa compression and / or air extraction assembly for injecting or sucking air into the sealed volume of each of the floats (6) to adapt a waterline of the platform (1) to the weight of the aircraft (2) that it receives.

2. Platform (1) according to claim 1, wherein each propeller (74) is mounted within a water pipe barrel (71) extending around the propeller shaft (73).

3. Platform (1) according to claim 1 or claim 2, wherein the structure (3) is of polygonal shape and comprises as many water pipe guns (71) as angles of the polygon, a gun (71). ) being present under each vertex of the polygon.

4. Platform (1) according to the preceding claim, characterized in that the water pipe barrels (71) of the stabilizing means (7) are mounted on the legs (35).

Platform (1) according to any one of the preceding claims, comprising control means (9) stabilizing means (7).

6. Platform (1) according to any one of the preceding claims, wherein the structure (3) is made of wire mesh girders and comprises an outer ring (31) and an inner ring (34) concentric and rays ( 32) extending from the outer ring (31) to a center of reinforcement (33).

7. Platform (1) according to any one of the preceding claims, comprising security means (5) comprising a guardrail (51).

8. Platform (1) according to the preceding claim, wherein the railing (51) comprises panels (52) movably mounted on the structure (3) between:

an access position in which the panels (52) are substantially parallel to the receiving floor (4), and

a protective position in which the panels (52) are substantially perpendicular to the receiving floor (4).

9. Platform (1) according to any one of the preceding claims, comprising a skirt (10) carrying solar panels (102).

10. Platform (1) according to any preceding claim wherein the at least one wheel (353) comprises a rim from which extends rays comprising cells to a contact surface configured to be in contact with a solid surface.

11. Platform (1) according to the preceding claim wherein the cells of the spokes are configured to absorb shocks by point deformation.

12. Platform (1) according to any one of the preceding claims, wherein the at least one wheel (353) is mounted on an axis (354) preferably orthogonal to the main main extension direction of the leg (35). , said axis (354) being mounted on one of the leg (35) and a frame (355) pivoting about the main direction of extension of the legs (35).

13. Platform (1) according to the preceding claim wherein the frame (355) comprises a fixed portion (356) relative to the leg (35) and a movable portion (357) relative to the fixed portion and configured to carry said axis ( 354).

14. Platform (1) according to one of the two preceding claims wherein each of the legs (35) comprises at least two wheels (353), and wherein the two wheels (353) are mounted on the same axis (354).

15. Platform (1) according to one of claims 12 or 13 wherein each of the legs (35) comprises at least two wheels (353), and wherein the two wheels (353) are mounted on two portions of axes ( 354), spaced from each other and each attached to one of the frame (355) pivoting and the leg (35).

16. Assembly (400) characterized in that it comprises a plurality of platform (1) according to any one of the preceding claims wherein each of the platforms (1) is assembled to the platform (1) adjacent by means of d hook comprising a floor (410) and cylinders (420).