WO2021040660A1 - An air vehicle - Google Patents

An air vehicle Download PDF

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Publication number
WO2021040660A1
WO2021040660A1 PCT/TR2020/050755 TR2020050755W WO2021040660A1 WO 2021040660 A1 WO2021040660 A1 WO 2021040660A1 TR 2020050755 W TR2020050755 W TR 2020050755W WO 2021040660 A1 WO2021040660 A1 WO 2021040660A1
Authority
WO
WIPO (PCT)
Prior art keywords
air vehicle
fuel
auxiliary body
main body
fuel tank
Prior art date
Application number
PCT/TR2020/050755
Other languages
French (fr)
Inventor
Serkan Kara
Original Assignee
Tusas- Turk Havacilik Ve Uzay Sanayii Anonim Sirketi
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tusas- Turk Havacilik Ve Uzay Sanayii Anonim Sirketi filed Critical Tusas- Turk Havacilik Ve Uzay Sanayii Anonim Sirketi
Publication of WO2021040660A1 publication Critical patent/WO2021040660A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
    • B64D37/00—Arrangements in connection with fuel supply for power plant
    • B64D37/02—Tanks
    • B64D37/06—Constructional adaptations thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
    • B64D37/00—Arrangements in connection with fuel supply for power plant
    • B64D37/02—Tanks
    • B64D37/04—Arrangement thereof in or on aircraft

Definitions

  • the present invention relates to an air vehicle with a fuel tank used in air vehicles and in which fuel is stored.
  • Air vehicles comprise a body, an engine providing movement of the air vehicle, and external and/or internal fuel tanks in which the fuel required for the operation of said engine is stored.
  • Air vehicles may comprise carrying means which are located at the lower part of said body, for example under the wing, wherein rockets, weapons, fuel tanks or their combinations can be mounted on said carrying means depending on the function to be performed by the air vehicle.
  • the need for fuel required by the air vehicle to travel for a long time at long ranges requires use of external fuel tanks.
  • External fuel tanks storing the fuel are generally used for long-range flights and they can be attached to or removed from the air vehicle when needed.
  • the fact that said fuel tanks are carried by the air vehicle even when the fuel tanks run out of fuel and that they increase outer volume of the air vehicle causes an increase in the drag force to which the vehicle is subjected, thereby leading additional fuel consumption.
  • an external fuel tank system which is triggered by an engine.
  • Said system comprises a fuel tank system located on air vehicles, a body and an external fuel tank located on the body.
  • Fuel filler line which provides fuel inlet on the external fuel tank comprises a first elastic wall and a second elastic wall which are deformable according to volume, an engine which is located under the external fuel tank and triggers fuel filling process, and a check valve which is located on the external fuel tank and allows for a one way movement of the fuel.
  • the fuel tank volume decreases effectively and efficiently as the amount of fuel stored in the fuel tank decreases.
  • An object of the present invention is to provide an air vehicle whose volume is used effectively and efficiently. Another object of the present invention is to increase flight efficiency.
  • a further object of the invention is to provide a practical, effective, efficient and reliable air vehicle.
  • the air vehicle realized to achieve the object of the invention and defined in the first claim and the other claims dependent thereon comprises a fuel tank which allows fuel to be carried therein, at least one ceiling located at the upper part of the fuel tank, and a main body which is located on the fuel tank, allows fuel to be carried therein and has at least a first lateral wall surrounding the ceiling.
  • the air vehicle according to the invention comprises at least a second lateral wall which is located inside and/or outside the main body and is capable of moving telescopically into and/or out of the main body, and an auxiliary body having a base and allowing more amount of fuel to be carried inside the fuel tank, wherein the base is surrounded by the second lateral wall and is located on the fuel tank so as to be parallel to the ceiling.
  • the air vehicle comprises at least one sensor which is located on the main body and allows amount of fuel inside the main body and/or the auxiliary body to be detected.
  • the air vehicle comprises at least one movement mechanism which is located on the fuel tank and moves the auxiliary body to allow the auxiliary body to enter into the main body and/or extend out of the main body.
  • the air vehicle comprises at least one control unit located on the fuel tank and transmitting the data provided by the sensor to the movement mechanism for allowing the control of the fuel tank movement and sensor and/or sensor operation.
  • the air vehicle comprises an auxiliary body which has a first position (I) in which it is located on the main body and a second position (II) in which it is brought from the first position (I) by moving telescopically out of the main body due to the movement mechanism activated by the control unit, and thus allowing more amount of fuel to be carried.
  • the air vehicle comprises a movement mechanism triggered by the control unit according to the fuel amount data received from the sensor, and an auxiliary body having at least a third position (III) in which it extends out of the main body and/or to which it is brought by the movement mechanism such that the auxiliary body contacts the outer perimeter between the first position (I) and the second position (II).
  • the air vehicle comprises a body, around which a free air flow is generated during movement, and an outer perimeter which directly contacts the air and forms a surface on which aerodynamic forces act.
  • the air vehicle comprises an outer perimeter which is located integrally with the base when the auxiliary body is in the first position (I). Therefore, when the amount of fuel inside the auxiliary body decreases, the auxiliary body is enabled to be integral with the outer perimeter in the first position (I) by means of the movement mechanism.
  • the air vehicle comprises an outer perimeter which is at least partially integral with the lateral wall and the base when the auxiliary body is brought into the second position (II).
  • the auxiliary body When in the second position (II) in which the auxiliary body extends out of the main body depending on the amount of fuel stored inside the auxiliary body, the auxiliary body is located to coincide with the outer perimeter.
  • the air vehicle comprises at least one hydraulic piston which is located on the main body and allows the movement mechanism to be brought into the first position (I) and/or the second position (II) and/or the third position (III).
  • the hydraulic piston enables the movement mechanism to be triggered.
  • the air vehicle comprises at least one extension which is located on the main body and allows the base and the outer perimeter to be connected when the outer perimeter and the base are integral, wherein the extension can be expanded or retracted.
  • the air vehicle comprises at least one chamber which is located in the fuel tank, wherein the chamber is brought into the first position (I) when its volume is decreased and to the second position (II) when its volume is expanded according to the amount fuel stored therein.
  • the air vehicle comprises a chamber which is made of a flexible material (flexible bladder). Thanks to the chamber made of a flexible material, the area occupied by the chamber in the fuel tank decreases as the amount of fuel stored in the chamber decreases.
  • Figure 1 is a schematic view of the auxiliary body on an air vehicle when it is in the first position (I).
  • Figure 2 is a schematic view of the auxiliary body on an air vehicle when it is in the second position (II).
  • Figure 3 is a schematic view of the auxiliary body on an air vehicle when it is in the third position (III).
  • the air vehicle (1) comprises a fuel tank (2) in which fuel is stored, at least one ceiling (T) located on the fuel tank (2), and a main body (4) which has at least a first lateral wall (3) surrounding the ceiling (T) so as to store fuel therein (Figure 1).
  • the air vehicle (1) comprises at least a second lateral wall (5) which is located on the main body (4) telescopically movable and surrounds the main body (4) from inside or outside, and an auxiliary body (6) having a base (B) and allowing additional fuel to be stored inside the fuel tank (2), wherein the base (B) is surrounded by the second lateral wall (5) and is located on the fuel tank (2) so as to face the ceiling (T) ( Figure 2).
  • the air vehicle (1) comprises a fuel tank (2) which allows fuel to be stored therein. Thanks to the first lateral wall (3) of the main body (4), fuel storage is achieved.
  • the main body (4) has a first lateral wall (3) located on the fuel tank (2), surrounding the ceiling (T) and extending out of the ceiling (T).
  • the auxiliary body (6) is located on the main body (4) such that it can move up and down.
  • the auxiliary body (6) has a second lateral wall (5) which allows the auxiliary body (6) telescopically movable on the main body (4).
  • the auxiliary body (6) allows more fuel to be carried within the fuel tank (2).
  • the auxiliary body (6) has a base (B) which is located on the fuel tank (2) and surrounded by the second lateral wall (5) parallel to the ceiling (T).
  • the second lateral wall (5) surrounds the main body (4) from inside and/or outside to allow movement of the auxiliary body (6) ( Figure 3).
  • the air vehicle (1) comprises at least one sensor (7) which is located on the main body (4) and allows amount of fuel stored inside the main body (4) and/or the auxiliary body (6) to be measured. Therefore, the sensor (7) enables the amount of fuel stored inside the main body (4) and/or the auxiliary body (6) to be detected and measured.
  • the air vehicle (1) comprises at least one movement mechanism (8) which allows the auxiliary body (6) to move on the main body (4). Therefore, the movement mechanism (8) effectively provides the up and down movement according to the fuel quantity data.
  • the air vehicle (1) comprises a control unit (9) located on the fuel tank (2) and allowing the data received from the sensor (7) and the movement mechanism (8) to be controlled.
  • the control unit (9) allows the movement mechanism (8) to be triggered according to the data provided by the sensor (7) and indicating the fuel amount stored inside the fuel tank (2).
  • the air vehicle (1) comprises an auxiliary body (6) which has a first position (I) in which it is located on the main body (4), wherein the auxiliary body (6) is brought into a second position (II) from the first position (I) by being triggered by the movement mechanism (8) by means of the control unit (9), thus allowing additional fuel to be stored, wherein the auxiliary body (6) extends out of the main body (4) when in the second position (II).
  • the auxiliary body (6) has a second position (II) in which it is brought from the first position (I) by means of the movement mechanism (8).
  • the control unit (9) allows the movement mechanism (8) to be brought into the first position (I) and/or the second position (II) according to fuel amount data.
  • the air vehicle (1) comprises an auxiliary body (6) which has a first position (I) into which the auxiliary body (6) is brought by being triggered by the movement mechanism (8) by means of the control unit (9), a second position (II) into which the auxiliary body (6) is brought by being triggered by the movement mechanism (8) operated through the control unit (9) that receives fuel amount data from the sensor (7), and a third position (III) which is between the first position (I) and the second position (II) and into which the auxiliary body (6) is brought according to the fuel amount data.
  • the auxiliary body (6) is brought into the third position (III) by being triggered by the movement mechanism (8) according to the fuel amount data provided by the sensor (7).
  • the third position (III) is located between the first position (I) and/or the second position (II). Therefore, the auxiliary body (6) which is brought into the third position (III) allows flight efficiency to be increased.
  • the air vehicle (1) comprises a body (10) around which a free air flow is generated upon movement, and an outer perimeter (11) which is located on the body (10), directly contacts the air and forms a surface on which aerodynamic forces act.
  • the body (10) having the free air flow generated during the movement of the air vehicle (1) has an outer perimeter (11) surrounding the air vehicle (1), contacting the air and being under the impact of aerodynamic forces.
  • the air vehicle (1) comprises an outer perimeter (11) which is integral with the base (B) when the auxiliary body (6) is in the first position (I).
  • the auxiliary body (6) has a base (B) which is located integrally with the outer perimeter (11) when it is brought into the first position (I). Therefore, impact of the drag force is decreased and the flight efficiency is provided aerodynamically.
  • the air vehicle (1) comprises an outer perimeter (11) which is at least partially integral with the lateral wall (3) and the base (B) when the auxiliary body (6) is in the second position (II).
  • the auxiliary body (6) has an outer perimeter (11) such that it is integral with the first lateral wall (3) and the base when it is in the second position (II).
  • the air vehicle (1) comprises at least one hydraulic piston (H) which is located on the main body (4) and allows the movement mechanism (8) to move.
  • the movement mechanism (8) which is brought by being triggered is located on the main body (4) such that it is movable up and down thanks to the hydraulic piston (H).
  • the air vehicle (1) comprises at least one extension
  • the extension (12) which extends out of the base (B), surrounds the base (B) and is integral with the outer perimeter (11) when the auxiliary body (6) is in the first position (I).
  • the extension (12) is located on the air vehicle (1) so as to fill the space between the outer perimeter
  • the air vehicle (1) comprises at least one chamber (13) which is located in the fuel tank (2) and is brought into the first position (I) by contracting, and into the second position (II) by expanding.
  • the chamber (13) located in the fuel tank (2) changes its volume by contracting and/or expanding according to the amount of fuel. Therefore, it allows more fuel to be stored inside the fuel tank (2).
  • the air vehicle (1) comprises a chamber (13) which is made of flexible material. Thanks to the flexible material (flexible bladder), the chamber

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  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Abstract

The present invention relates to a fuel tank (2) in which fuel is stored, at least one ceiling (T) located on the fuel tank (2), and a main body (4) which has at least a first lateral wall (3) surrounding the ceiling (T) so as to store fuel therein.

Description

AN AIR VEHICLE
The present invention relates to an air vehicle with a fuel tank used in air vehicles and in which fuel is stored.
Especially in air vehicles, fuel tanks are widely used for storing fuel. Air vehicles comprise a body, an engine providing movement of the air vehicle, and external and/or internal fuel tanks in which the fuel required for the operation of said engine is stored. Air vehicles may comprise carrying means which are located at the lower part of said body, for example under the wing, wherein rockets, weapons, fuel tanks or their combinations can be mounted on said carrying means depending on the function to be performed by the air vehicle. The need for fuel required by the air vehicle to travel for a long time at long ranges requires use of external fuel tanks. External fuel tanks storing the fuel are generally used for long-range flights and they can be attached to or removed from the air vehicle when needed. However, the fact that said fuel tanks are carried by the air vehicle even when the fuel tanks run out of fuel and that they increase outer volume of the air vehicle causes an increase in the drag force to which the vehicle is subjected, thereby leading additional fuel consumption.
In the US patent application no. US2777656, which is covered by the known state of art, there is disclosed an external fuel tank system which is triggered by an engine. Said system comprises a fuel tank system located on air vehicles, a body and an external fuel tank located on the body. Fuel filler line which provides fuel inlet on the external fuel tank comprises a first elastic wall and a second elastic wall which are deformable according to volume, an engine which is located under the external fuel tank and triggers fuel filling process, and a check valve which is located on the external fuel tank and allows for a one way movement of the fuel. However, it is not mentioned that the fuel tank volume decreases effectively and efficiently as the amount of fuel stored in the fuel tank decreases.
An object of the present invention is to provide an air vehicle whose volume is used effectively and efficiently. Another object of the present invention is to increase flight efficiency.
A further object of the invention is to provide a practical, effective, efficient and reliable air vehicle.
The air vehicle realized to achieve the object of the invention and defined in the first claim and the other claims dependent thereon comprises a fuel tank which allows fuel to be carried therein, at least one ceiling located at the upper part of the fuel tank, and a main body which is located on the fuel tank, allows fuel to be carried therein and has at least a first lateral wall surrounding the ceiling.
The air vehicle according to the invention comprises at least a second lateral wall which is located inside and/or outside the main body and is capable of moving telescopically into and/or out of the main body, and an auxiliary body having a base and allowing more amount of fuel to be carried inside the fuel tank, wherein the base is surrounded by the second lateral wall and is located on the fuel tank so as to be parallel to the ceiling.
In an embodiment of the invention, the air vehicle comprises at least one sensor which is located on the main body and allows amount of fuel inside the main body and/or the auxiliary body to be detected.
In an embodiment of the invention, the air vehicle comprises at least one movement mechanism which is located on the fuel tank and moves the auxiliary body to allow the auxiliary body to enter into the main body and/or extend out of the main body.
In an embodiment of the present invention, the air vehicle comprises at least one control unit located on the fuel tank and transmitting the data provided by the sensor to the movement mechanism for allowing the control of the fuel tank movement and sensor and/or sensor operation.
In an embodiment of the present invention, the air vehicle comprises an auxiliary body which has a first position (I) in which it is located on the main body and a second position (II) in which it is brought from the first position (I) by moving telescopically out of the main body due to the movement mechanism activated by the control unit, and thus allowing more amount of fuel to be carried.
In an embodiment of the present invention, the air vehicle comprises a movement mechanism triggered by the control unit according to the fuel amount data received from the sensor, and an auxiliary body having at least a third position (III) in which it extends out of the main body and/or to which it is brought by the movement mechanism such that the auxiliary body contacts the outer perimeter between the first position (I) and the second position (II).
In an embodiment of the invention, the air vehicle comprises a body, around which a free air flow is generated during movement, and an outer perimeter which directly contacts the air and forms a surface on which aerodynamic forces act.
In an embodiment of the invention, the air vehicle comprises an outer perimeter which is located integrally with the base when the auxiliary body is in the first position (I). Therefore, when the amount of fuel inside the auxiliary body decreases, the auxiliary body is enabled to be integral with the outer perimeter in the first position (I) by means of the movement mechanism.
In an embodiment of the invention, the air vehicle comprises an outer perimeter which is at least partially integral with the lateral wall and the base when the auxiliary body is brought into the second position (II). When in the second position (II) in which the auxiliary body extends out of the main body depending on the amount of fuel stored inside the auxiliary body, the auxiliary body is located to coincide with the outer perimeter.
In an embodiment of the invention, the air vehicle comprises at least one hydraulic piston which is located on the main body and allows the movement mechanism to be brought into the first position (I) and/or the second position (II) and/or the third position (III). The hydraulic piston enables the movement mechanism to be triggered.
In an embodiment of the invention, the air vehicle comprises at least one extension which is located on the main body and allows the base and the outer perimeter to be connected when the outer perimeter and the base are integral, wherein the extension can be expanded or retracted.
In an embodiment of the invention, the air vehicle comprises at least one chamber which is located in the fuel tank, wherein the chamber is brought into the first position (I) when its volume is decreased and to the second position (II) when its volume is expanded according to the amount fuel stored therein.
In an embodiment of the invention, the air vehicle comprises a chamber which is made of a flexible material (flexible bladder). Thanks to the chamber made of a flexible material, the area occupied by the chamber in the fuel tank decreases as the amount of fuel stored in the chamber decreases.
The air vehicle realized to achieve the object of the present invention is illustrated in the attached drawings, in which:
Figure 1 is a schematic view of the auxiliary body on an air vehicle when it is in the first position (I).
Figure 2 is a schematic view of the auxiliary body on an air vehicle when it is in the second position (II).
Figure 3 is a schematic view of the auxiliary body on an air vehicle when it is in the third position (III).
All the parts illustrated in figures are individually assigned a reference numeral and the corresponding terms of these numbers are listed below:
1. Air Vehicle
2. Fuel Tank
3. First Lateral Wall
4. Main Body
5. Second Lateral Wall
6. Auxiliary Body
7. Sensor
8. Movement Mechanism 9. Control Unit
10. Body
11. Outer Perimeter
12. Extension
13. Chamber
(I) First Position
(II) Second Position
(III) Third Position (T) Ceiling
(B) Base
(H) Hydraulic Piston
The air vehicle (1) comprises a fuel tank (2) in which fuel is stored, at least one ceiling (T) located on the fuel tank (2), and a main body (4) which has at least a first lateral wall (3) surrounding the ceiling (T) so as to store fuel therein (Figure 1).
The air vehicle (1) according to the invention comprises at least a second lateral wall (5) which is located on the main body (4) telescopically movable and surrounds the main body (4) from inside or outside, and an auxiliary body (6) having a base (B) and allowing additional fuel to be stored inside the fuel tank (2), wherein the base (B) is surrounded by the second lateral wall (5) and is located on the fuel tank (2) so as to face the ceiling (T) (Figure 2).
The air vehicle (1) comprises a fuel tank (2) which allows fuel to be stored therein. Thanks to the first lateral wall (3) of the main body (4), fuel storage is achieved. The main body (4) has a first lateral wall (3) located on the fuel tank (2), surrounding the ceiling (T) and extending out of the ceiling (T).
Due to the second lateral wall (5), the auxiliary body (6) is located on the main body (4) such that it can move up and down. The auxiliary body (6) has a second lateral wall (5) which allows the auxiliary body (6) telescopically movable on the main body (4). The auxiliary body (6) allows more fuel to be carried within the fuel tank (2). The auxiliary body (6) has a base (B) which is located on the fuel tank (2) and surrounded by the second lateral wall (5) parallel to the ceiling (T). The second lateral wall (5) surrounds the main body (4) from inside and/or outside to allow movement of the auxiliary body (6) (Figure 3).
In an embodiment of the invention, the air vehicle (1) comprises at least one sensor (7) which is located on the main body (4) and allows amount of fuel stored inside the main body (4) and/or the auxiliary body (6) to be measured. Therefore, the sensor (7) enables the amount of fuel stored inside the main body (4) and/or the auxiliary body (6) to be detected and measured.
In an embodiment of the invention, the air vehicle (1) comprises at least one movement mechanism (8) which allows the auxiliary body (6) to move on the main body (4). Therefore, the movement mechanism (8) effectively provides the up and down movement according to the fuel quantity data.
In an embodiment of the invention, the air vehicle (1) comprises a control unit (9) located on the fuel tank (2) and allowing the data received from the sensor (7) and the movement mechanism (8) to be controlled. The control unit (9) allows the movement mechanism (8) to be triggered according to the data provided by the sensor (7) and indicating the fuel amount stored inside the fuel tank (2).
In an embodiment of the invention, the air vehicle (1) comprises an auxiliary body (6) which has a first position (I) in which it is located on the main body (4), wherein the auxiliary body (6) is brought into a second position (II) from the first position (I) by being triggered by the movement mechanism (8) by means of the control unit (9), thus allowing additional fuel to be stored, wherein the auxiliary body (6) extends out of the main body (4) when in the second position (II). The auxiliary body (6) has a second position (II) in which it is brought from the first position (I) by means of the movement mechanism (8). Thus, additional fuel is allowed to be stored inside the auxiliary body (6). The control unit (9) allows the movement mechanism (8) to be brought into the first position (I) and/or the second position (II) according to fuel amount data.
In an embodiment of the invention, the air vehicle (1) comprises an auxiliary body (6) which has a first position (I) into which the auxiliary body (6) is brought by being triggered by the movement mechanism (8) by means of the control unit (9), a second position (II) into which the auxiliary body (6) is brought by being triggered by the movement mechanism (8) operated through the control unit (9) that receives fuel amount data from the sensor (7), and a third position (III) which is between the first position (I) and the second position (II) and into which the auxiliary body (6) is brought according to the fuel amount data. The auxiliary body (6) is brought into the third position (III) by being triggered by the movement mechanism (8) according to the fuel amount data provided by the sensor (7). The third position (III) is located between the first position (I) and/or the second position (II). Therefore, the auxiliary body (6) which is brought into the third position (III) allows flight efficiency to be increased.
In an embodiment of the invention, the air vehicle (1) comprises a body (10) around which a free air flow is generated upon movement, and an outer perimeter (11) which is located on the body (10), directly contacts the air and forms a surface on which aerodynamic forces act. The body (10) having the free air flow generated during the movement of the air vehicle (1) has an outer perimeter (11) surrounding the air vehicle (1), contacting the air and being under the impact of aerodynamic forces.
In an embodiment of the invention, the air vehicle (1) comprises an outer perimeter (11) which is integral with the base (B) when the auxiliary body (6) is in the first position (I). The auxiliary body (6) has a base (B) which is located integrally with the outer perimeter (11) when it is brought into the first position (I). Therefore, impact of the drag force is decreased and the flight efficiency is provided aerodynamically.
In an embodiment of the invention, the air vehicle (1) comprises an outer perimeter (11) which is at least partially integral with the lateral wall (3) and the base (B) when the auxiliary body (6) is in the second position (II). The auxiliary body (6) has an outer perimeter (11) such that it is integral with the first lateral wall (3) and the base when it is in the second position (II).
In an embodiment of the invention, the air vehicle (1) comprises at least one hydraulic piston (H) which is located on the main body (4) and allows the movement mechanism (8) to move. The movement mechanism (8) which is brought by being triggered is located on the main body (4) such that it is movable up and down thanks to the hydraulic piston (H). In an embodiment of the invention, the air vehicle (1) comprises at least one extension
(12) which extends out of the base (B), surrounds the base (B) and is integral with the outer perimeter (11) when the auxiliary body (6) is in the first position (I). The extension (12) is located on the air vehicle (1) so as to fill the space between the outer perimeter
(11) and the auxiliary body (6) which is brought into the first position (I).
In an embodiment of the invention, the air vehicle (1) comprises at least one chamber (13) which is located in the fuel tank (2) and is brought into the first position (I) by contracting, and into the second position (II) by expanding. The chamber (13) located in the fuel tank (2) changes its volume by contracting and/or expanding according to the amount of fuel. Therefore, it allows more fuel to be stored inside the fuel tank (2).
In an embodiment of the invention, the air vehicle (1) comprises a chamber (13) which is made of flexible material. Thanks to the flexible material (flexible bladder), the chamber
(13) saves space in the fuel tank by changing its volume according to the amount of fuel.

Claims

1. An air vehicle (1) comprising a fuel tank (2) in which fuel is stored, at least one ceiling (T) located on the fuel tank (2), and a main body (4) which has at least a first lateral wall (3) surrounding the ceiling (T) so as to store fuel therein, characterized by at least a second lateral wall (5) which is located on the main body (4) telescopically movable and surrounds the main body (4) from inside or outside, and an auxiliary body (6) having a base (B) and allowing additional fuel to be stored inside the fuel tank (2), wherein the base (B) is surrounded by the second lateral wall (5) and is located on the fuel tank (2) so as to face the ceiling (T).
2. An air vehicle (1) according to claim 1, characterized by at least one sensor (7) which is located on the main body (4) and allows amount of fuel stored inside the main body (4) and/or the auxiliary body (6) to be measured.
3. An air vehicle (1) according to any of the preceding claims, characterized by at least one movement mechanism (8) which allows the auxiliary body (6) to move on the main body (4).
4. An air vehicle (1) according to claim 3, characterized by at least one control unit (9) located on the fuel tank (2) and allowing the data received from the sensor (7) and the movement mechanism (8) to be controlled.
5. An air vehicle (1) according to claim 3 or 4, characterized by an auxiliary body (6) which has a first position (I) in which it is located on the main body (4), wherein the auxiliary body (6) is brought into a second position (II) from the first position (I) by being triggered by the movement mechanism (8) by means of the control unit, thus allowing additional fuel to be stored, wherein the auxiliary body (6) extends out of the main body (4) when in the second position (II).
6. An air vehicle (1) according to claim 4 or 5, characterized by an auxiliary body (6) which has a first position (I) into which the auxiliary body (6) is brought by being triggered by the movement mechanism (8) by means of the control unit (9), a second position (II) into which the auxiliary body (6) is brought by being triggered by the movement mechanism (8) operated through the control unit (9) that receives fuel amount data from the sensor (7), and a third position (III) which is between the first position (I) and the second position (II) and into which the auxiliary body (6) is brought according to the fuel amount data.
7. An air vehicle (1) according to any of the preceding claims, characterized by a body (10) around which a free air flow is generated upon movement, and an outer perimeter (11) which is located on the body (10), directly contacts the air and forms a surface on which aerodynamic forces act.
8. An air vehicle (1) according to claim 7, characterized by an outer perimeter (11) which is integral with the base (B) when the auxiliary body (6) is in the first position
(I)·
9. An air vehicle (1) according to claim 7 or 8, characterized by an outer perimeter
(I I) which is at least partially integral with the lateral wall (3) and the base (B) when the auxiliary body (6) is in the second position (II).
10. An air vehicle (1) according to claims 3 to 9, characterized by at least one hydraulic piston (H) which is located on the main body (4) and allows the movement mechanism (8) to move.
11. An air vehicle (1) according to claims 7 to 10, characterized by at least one extension (12) which extends out of the base (B), surrounds the base (B) and is integral with the outer perimeter (11) when the auxiliary body (6) is in the first position (I).
12. An air vehicle (1) according to claims 5 to 12, characterized by at least one chamber (13) which is located in the fuel tank (2) and is brought into the first position (I) by contracting, and into the second position (II) by expanding.
13. An air vehicle (1) according to claim 12, characterized by a chamber (13) which is made of a flexible material.
PCT/TR2020/050755 2019-08-28 2020-08-25 An air vehicle WO2021040660A1 (en)

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TR2019/13059 2019-08-28
TR2019/13059A TR201913059A2 (en) 2019-08-28 2019-08-28 An aircraft.

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2777656A (en) 1953-04-28 1957-01-15 Northrop Aircraft Inc Auxiliary fuel cell
US4026503A (en) 1974-12-19 1977-05-31 British Aircraft Corporation Limited Fuel storage means
US4651952A (en) * 1986-01-17 1987-03-24 Tavano John B Emergency aircraft system
US5205427A (en) * 1992-03-17 1993-04-27 Brunswick Corporation Modular fuel tank system
US5975466A (en) 1998-06-02 1999-11-02 Northrop Grumman Corporation Variable displacement fuel tank for aircraft
WO2000035752A1 (en) * 1998-12-16 2000-06-22 Carl Cheung Tung Kong Fluid transfer system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2777656A (en) 1953-04-28 1957-01-15 Northrop Aircraft Inc Auxiliary fuel cell
US4026503A (en) 1974-12-19 1977-05-31 British Aircraft Corporation Limited Fuel storage means
US4651952A (en) * 1986-01-17 1987-03-24 Tavano John B Emergency aircraft system
US5205427A (en) * 1992-03-17 1993-04-27 Brunswick Corporation Modular fuel tank system
US5975466A (en) 1998-06-02 1999-11-02 Northrop Grumman Corporation Variable displacement fuel tank for aircraft
WO2000035752A1 (en) * 1998-12-16 2000-06-22 Carl Cheung Tung Kong Fluid transfer system

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