Turbofan engine
First Claim
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1. A turbofan engine having a fan on a front side thereof and a turbine driving the fan, the turbofan engine further comprising:
- a disk rotationally driven by the turbine;
a spinner detachably mounted at a front side of the disk;
a spiral blade integrally mounted on a surface of the spinner, wherein the spiral blade is spirally extended to an axial position of a front end portion of the spinner; and
a rear moving blade detachably mounted on an outer circumferential surface of the disk at the downstream side of the spiral blade;
wherein the spiral blade and the rear moving blade form a first-stage moving blade of the fan,the spiral blade has a rear end having a first radial height defined with respect to an axis of the engine, andthe rear moving blade has a second radial height, defined with respect to the axis, that is greater than the first radial height.
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Abstract
A turbofan engine has a fan on a front side thereof and a turbine driving the fan. The turbofan engine includes a disk rotationally driven by the turbine, a spinner detachably mounted at a front side of the disk, a spiral blade integrally mounted on a surface of the spinner, and a rear moving blade detachably mounted on an outer circumferential surface of the disk. The spiral blade and the rear moving blade form a first-stage moving blade of the fan.
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Citations
13 Claims
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1. A turbofan engine having a fan on a front side thereof and a turbine driving the fan, the turbofan engine further comprising:
- a disk rotationally driven by the turbine;
a spinner detachably mounted at a front side of the disk;a spiral blade integrally mounted on a surface of the spinner, wherein the spiral blade is spirally extended to an axial position of a front end portion of the spinner; and
a rear moving blade detachably mounted on an outer circumferential surface of the disk at the downstream side of the spiral blade;wherein the spiral blade and the rear moving blade form a first-stage moving blade of the fan, the spiral blade has a rear end having a first radial height defined with respect to an axis of the engine, and the rear moving blade has a second radial height, defined with respect to the axis, that is greater than the first radial height. - View Dependent Claims (4, 5, 8, 10, 12)
- a disk rotationally driven by the turbine;
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2. A turbofan engine having a fan on a front side thereof and a turbine driving the fan, the turbofan engine further comprising:
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a disk that is rotationally driven by the turbine and that has an engagement groove extending in an axial direction at a plurality of positions of an outer circumferential portion thereof; a rear moving blade at the downstream side of the spiral blade, wherein the rear moving blade includes a base portion having a dovetail portion extending in a front-to-rear direction, the dovetail portion is detachably fitted into the engagement groove from a front side; a spinner detachably mounted at a front side of the disk; and a spiral blade integrally mounted on a surface of the spinner, wherein the spiral blade is spirally extended to an axial position of a front end portion of the spinner; wherein the spiral blade and the rear moving blade form a first-stage moving blade of the fan, the spiral blade has a rear end having a first radial height defined with respect to an axis of the engine, and the rear moving blade has a second radial height, defined with respect to the axis, that is greater than the first radial height. - View Dependent Claims (3, 6, 7, 9, 11, 13)
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Specification