DUAL TOWER SHAFT GEARBOX FOR GAS TURBINE ENGINE
First Claim
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1. A gas turbine engine comprising:
- a turbine section having first and second turbines mounted for rotation about a common rotational axis within an engine static structure;
first and second turbine shafts coaxial with one another and to which the first and second turbines are respectively operatively mounted;
first and second tower shafts respectively coupled to the first and second turbine shafts; and
an accessory drive gearbox mounted to the engine static structure, the accessory drive gearbox including gears arranged within a common housing, the first and second tower shafts extending into the common housing and coupled to the gears.
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Abstract
A gas turbine engine includes a turbine section that has first and second turbines mounted for rotation about a common rotational axis within an engine static structure. First and second turbine shafts coaxial with one another and to which the first and second turbines are respectively operatively mounted. First and second tower shafts respectively coupled to the first and second turbine shafts. An accessory drive gearbox is mounted to the engine static structure. The accessory drive gearbox includes gears arranged within a common housing. The first and second tower shafts extend into the common housing and are coupled to the gears.
64 Citations
19 Claims
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1. A gas turbine engine comprising:
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a turbine section having first and second turbines mounted for rotation about a common rotational axis within an engine static structure; first and second turbine shafts coaxial with one another and to which the first and second turbines are respectively operatively mounted; first and second tower shafts respectively coupled to the first and second turbine shafts; and an accessory drive gearbox mounted to the engine static structure, the accessory drive gearbox including gears arranged within a common housing, the first and second tower shafts extending into the common housing and coupled to the gears. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method of installing an accessory gearbox onto a gas turbine engine, the method comprising the steps of:
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mounting a gearbox housing onto an engine static structure, the gearbox housing having first and second opposing sides; inserting a first tower shaft into the first side of the housing, through the second side, and into the engine static structure to couple the first tower shaft with a first turbine shaft in the static structure and a first gear set in the gearbox housing; and inserting a second tower shaft into the first side of the housing, through the second side, and into the engine static structure to couple the second tower shaft with a second turbine shaft in the static structure and a second gear set in the gearbox housing. - View Dependent Claims (15, 16, 17, 18, 19)
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Specification