Aircraft and a retrofit cryogenic fuel system
First Claim
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1. An aircraft, comprising:
- a turbine engine having a bleed air output line;
a cryogenic fuel system having a cryogenic fuel tank for storing cryogenic fuel and a supply line operably coupling the tank to the turbine engine, the cryogenic fuel tank being located within a compartment;
an on board inert gas generating system (OBIGGS) fluidly coupled to the bleed air output line and having a nitrogen rich stream output line and an oxygen rich stream output line, the nitrogen rich stream output line being fluidly coupled with the compartment; and
a pressure regulation system configured to selectively increase or decrease a pressure in said nitrogen rich stream output line, the pressure regulation system comprising;
a control valve;
a low pressure line;
a high pressure line; and
an expansion valve or turbine fluidly coupled to the low pressure line upstream of the compartment for lowering a pressure of the nitrogen rich stream provided to the compartment.
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Abstract
An aircraft having a turbine engine having a bleed air output line, a cryogenic fuel system having a cryogenic fuel tank for storing cryogenic fuel and a supply line operably coupling the tank to the turbine engine, and an on board inert gas generating system (OBIGGS) fluidly coupled to the bleed air output and having a nitrogen rich stream output line and an oxygen rich stream output line.
11 Citations
18 Claims
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1. An aircraft, comprising:
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a turbine engine having a bleed air output line; a cryogenic fuel system having a cryogenic fuel tank for storing cryogenic fuel and a supply line operably coupling the tank to the turbine engine, the cryogenic fuel tank being located within a compartment; an on board inert gas generating system (OBIGGS) fluidly coupled to the bleed air output line and having a nitrogen rich stream output line and an oxygen rich stream output line, the nitrogen rich stream output line being fluidly coupled with the compartment; and a pressure regulation system configured to selectively increase or decrease a pressure in said nitrogen rich stream output line, the pressure regulation system comprising; a control valve; a low pressure line; a high pressure line; and an expansion valve or turbine fluidly coupled to the low pressure line upstream of the compartment for lowering a pressure of the nitrogen rich stream provided to the compartment. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An aircraft having a retrofit cryogenic fuel system, a cargo bay and a turbine engine fueled by the cryogenic fuel, comprising:
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an evacuated enclosure within the cargo bay; a cryogenic fuel tank located within the evacuated enclosure, the cryogenic fuel tank being located within a compartment; at least one vent line or fuel supply line fluidly coupled to the evacuated enclosure; an on board inert gas generating system (OBIGGS) fluidly coupled to a bleed air output line and having a nitrogen rich stream output line and an oxygen rich stream output line, the nitrogen rich stream output line being fluidly coupled with the compartment; and a pressure regulation system configured to selectively increase or decrease the pressure of said nitrogen rich stream, the pressure regulation system comprising; a control valve; a low pressure line; a high pressure line; and an expansion valve or turbine fluidly coupled to the low pressure line upstream of the compartment for lowering a pressure of the nitrogen rich stream provided to the compartment. - View Dependent Claims (8, 9, 10, 11)
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12. An aircraft, comprising:
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a turbine engine having a bleed air output line; a cryogenic fuel system having a cryogenic fuel tank for storing cryogenic fuel and a supply line operably coupling the tank to the turbine engine, the cryogenic fuel tank being located within a compartment; an on board inert gas generating system (OBIGGS) fluidly coupled to the bleed air output line and having a nitrogen rich stream output line and an oxygen rich stream output line, the nitrogen rich stream output line being fluidly coupled with the compartment; a water and particle filter upstream of said on board inert gas generating system (OBIGGS); and a pressure regulation system configured to selectively increase or decrease the pressure of said nitrogen rich stream, the pressure regulation system comprising; a low pressure line; a high pressure line; and an expansion valve or turbine fluidly coupled to the low pressure line upstream of the compartment for lowering a pressure of the nitrogen rich stream provided to the compartment. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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Specification