| 摘要 |
PROBLEM TO BE SOLVED: To realize an unwasteful and rational structure regarding heat resistance of a material, to facilitate a design and suppress a whole cost including a cost of the material by dividing respective nozzles for by-pass air and jet in a turbo-fan engine having a vertical takeoff and landing function. SOLUTION: The turbo-fan engine E is provided with a by-pass-nozzle 3 for injecting by-pass air of low temperature passed through a fan 21 and injected as it is and a jet nozzle 27 for injecting jet of high temperature passed through a compressor from the fan 21 and burned. The by-pass nozzle 3 has a downward injection port 33 capable of downwardly injecting the by-pass air and a horizontal injection port 32 capable of horizontally injecting the by-pass air. The downward injection port 33 and the horizontal injection port 32 are constituted such that they can selectively inject the by-pass air to a downward direction and a horizontal direction by blocking one side by a blocking body 34. The jet nozzle 27 is constituted such that the jet can be downwardly injected.
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