AUXILIARY POWER SUPPLY METHOD THROUGH AN AUXILIARY POWER UNIT AND CORRESPONDING ARCHITECTURE
First Claim
1. An auxiliary power supply method for an aircraft, being equipped with main engines and power consumers, through an auxiliary power supply unit (APU), provided with a combustion chamber, said method comprising:
- in a primary mode, supplying non propulsive power with said APU to consumers of the aircraft from a source of a common fuel being common to the engines of the aircraft and to the APU,performing a basic circulation of said common fuel up to the combustion chamber of the APU,in an emergency mode, providing emergency power to vital systems of the aircraft with said APU, andsupplying the combustion chamber of the APU unit with emergency fuel from a specific source according to an independent circulation being separated, at least in one part connected with the specific source, from the basic circulation.
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Accused Products
Abstract
An auxiliary power supply architecture includes one APU and a fuel supply basic circuit with a common fuel storage tank, a primary circulation conduct and secondary conducts for injecting such fuel into the combustion chambers of the APU unit through appropriate injectors. Such architecture also includes another independent fuel supply circuit to supply the APU unit with an emergency tank, a specific primary conduct for emergency fuel circulation and secondary conducts for injecting emergency fuel into the combustion chambers through appropriate injectors.
30 Citations
12 Claims
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1. An auxiliary power supply method for an aircraft, being equipped with main engines and power consumers, through an auxiliary power supply unit (APU), provided with a combustion chamber, said method comprising:
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in a primary mode, supplying non propulsive power with said APU to consumers of the aircraft from a source of a common fuel being common to the engines of the aircraft and to the APU, performing a basic circulation of said common fuel up to the combustion chamber of the APU, in an emergency mode, providing emergency power to vital systems of the aircraft with said APU, and supplying the combustion chamber of the APU unit with emergency fuel from a specific source according to an independent circulation being separated, at least in one part connected with the specific source, from the basic circulation. - View Dependent Claims (2, 3, 4, 5)
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6. A power supply architecture for supplying auxiliary power, comprising:
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an auxiliary power supply unit (APU), a fuel supply basic circuit, wherein said fuel supply basic circuit comprises a common fuel storage tank for an aircraft propulsion assembly including the APU, a primary circulation conduct for a common fuel and secondary conducts for injecting said common fuel into a combustion chamber of the APU through appropriate injectors, and an independent fuel supply circuit to supply the APU with fuel, said independent fuel supply circuit comprising an emergency tank, a specific primary conduct for emergency fuel circulation and secondary conducts for injecting emergency fuel into the combustion chamber of the APU through appropriate injectors. - View Dependent Claims (7, 8, 9, 10, 11, 12)
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Specification