[특허]Fuel storage device, an aircraft, and a method

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Fuel storage device, an aircraft, and a method

국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B64D-037/06 B64D-037/20 B64D-037/24 B64D-037/16 B64C-027/04
출원번호	US-0074745 (2013-11-08)
등록번호	US-9623980 (2017-04-18)
우선권정보	FR-12 03101 (2012-11-19)
발명자 / 주소	Meillat, Roland Mougin, Stephane
출원인 / 주소	AIRBUS HELICOPTERS
대리인 / 주소	Brooks Kushman P.C.
인용정보	피인용 횟수 : 0 인용 특허 : 7

초록

A fuel storage device (10) having at least one tank (15), the tank (15) having a casing (20) extending upwards from a bottom (21) to a top wall (22). The storage device (10) is provided with at least one inflatable bag (25) arranged inside said casing, said device including inflation/deflation means (35) for inflating each inflatable bag (25) at least in part so as to reach an inflated volume prior to filling the tank, and for deflating said inflatable bag after filling in order to guarantee the presence of an expansion volume inside said tank.

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1. A storage device for storing fuel, the device having at least one tank, the tank having a casing extending upwards from a bottom to a top wall, wherein the storage device is provided with at least one inflatable bag arranged inside the casing, the storage device including inflation/deflation means inflating each inflatable bag at least in part so as to reach an inflated volume prior to filling the tank, and for deflating the inflatable bag after filling in order to guarantee an expansion volume inside the tank, wherein the at least one inflatable bag is fastened to the bottom of the casing in order to provide the expansion volume and also to provide at least one slope having a variable angle of inclination to direct the fuel towards a predetermined zone of the tank by gravity, wherein the at least one inflatable bag is compartmentalized so as to present a first compartment for inflating/deflating the expansion volume, and a second compartment in order to provide the at least one slope. 2. A device according to claim 1, wherein the storage device includes measurement means for measuring a volume of fuel and connected to the inflation/deflation means in order to adjust the angle of inclination of the at least one slope automatically as a function of the volume of fuel. 3. A device according to claim 1, wherein the storage device includes a measurement system for measuring flight duration, and wherein the storage device includes a pressure sensor. 4. A device according to claim 1, wherein the storage device includes manual control means for the inflation/deflation means, and wherein the storage device is provided with display means for displaying information relating to the slope. 5. A device according to claim 1, wherein the storage device is provided with a gauging system for measuring a depth of fuel in the tank, and the gauging system includes a gauging relationship for each authorized angle of inclination of the slope, each gauging relationship providing a volume of fuel as a function of the depth. 6. An aircraft, including a storage device according to claim 1. 7. A method of storing fuel in a storage device, the storage device having at least one tank, the tank having a casing extending upwards from a bottom to a top wall, wherein the storage device is provided with at least one inflatable bag arranged inside the casing, the storage device including inflation/deflation means inflating each inflatable bag at least in part so as to reach an inflated volume prior to filling the tank, and for deflating the inflatable bag after filling in order to guarantee an expansion volume inside the tank, the method comprising inflating the at least one inflatable bag to a predetermined volume in order to provide an expansion volume in the tank prior to filling the tank with fuel, filling the tank with fuel while the at least one inflatable bag is at the predetermined volume, and then deflating the at least one inflatable bag after filling the tank with fuel. 8. A method according to claim 7, further comprising inflating the at least one inflatable bag when the volume of fuel in the tank is less than a predetermined threshold after filling the tank with fuel in order to provide a slope at the bottom of the tank enabling fuel contained in the tank to be directed by gravity towards a predetermined zone of the tank as a function of fuel level. 9. A method according to claim 7, wherein in order to provide a slope enabling fuel contained in the tank to be directed by gravity towards a predetermined zone, the following steps are performed: when fuel volume is greater than a predetermined threshold after filling the tank with fuel, inflating the at least one inflatable bag once the volume of the fuel drops below the predetermined threshold; andwhen fuel volume does not reach the predetermined threshold on filling the tank with fuel, inflating the inflatable bag at the end of filling. 10. A method according to claim 9, further comprising determining a gauging relationship to provide a volume of fuel as a function of a depth of fuel in the tank, and modifying the gauging relationship when the slope is modified. 11. A method according to claim 7, further comprising providing the storage device on an aircraft having at least one engine, and deflating the at least one inflatable bag when the engine is stopped. 12. A method according to claim 7, wherein the at least one inflatable bag is deflated at the end of filling the tank with fuel if the level of fuel exceeds a predetermined threshold level. 13. A method according to claim 7, wherein the at least one inflatable bag is deflated at the end of filling the tank with fuel, and the inflating and deflating of the inflatable bag taking place while the inflatable bag is on the ground. 14. A method according to claim 7, wherein the at least one inflatable bag is deflated immediately after filling the tank with fuel. 15. A method according to claim 7, wherein the inflatable bag is immersed in fuel when filling the tank with fuel. 16. A method of storing fuel in a storage device in an aircraft, the method comprising: providing an aircraft having a fuel tank and an inflatable bag disposed within, and connected to, the fuel tank, the inflatable bag communicating with an inflation source to be inflatable between an inflated state, wherein the inflatable bag is inflated to a predetermined volume, and a deflated state, wherein the inflatable bag is deflated;inflating the inflatable bag to the predetermined volume;filling the fuel tank with fuel while the inflatable bag is inflated to the predetermined volume; andafter filling the fuel tank with fuel, deflating the inflatable bag from the predetermined volume to the deflated state to provide a free volume inside the fuel tank to provide an expansion volume for the fuel in the fuel tank.

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Fuel storage device, an aircraft, and a method

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Fuel storage device, an aircraft, and a method

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