To provide a gas turbine which is vibration-free, simplified structure, and sasy to start, and which exceeds a reciprocating engine in the performance, cost, fuel consumption, and exhaust gas-components, as a prime mover for traveling or stationary type various types of industial machines.

A cover 1 with a ring-like inlet reservoir 2 and a cylinder 4 with a ring-like combustion chamber 5 are fastened to each other while a bulkhead 3 with an inlet port 47 are put between them. When an inlet valve 48 closing an inlet hole is pressed to be opened, fuel in a pump room 32 is pressed by a piston 34 to be injected from a fuel injection nozzle hole 50 to touch the inlet air and the red heat part of an electric heating plug 52 to be ignited to explode. The inlet valve is closed by explosion pressure, and the explosion pressure does not reach a compression blade. Explosion gas are adiabatically expands in the ring-like combustion chamber to blow against a double flow driving blade 8 and turn it, and turn an axial flow compression blade 10 in the cylinder and a shaft 30. The explosion gas is straightened by a reversed axial flow blade 13 with an angle of attack to be reversed by straightening resistance, and to reverse a reversed compression blade 15 inside the cylinder to straightening- compress the inlet air. The straightened explosion gas turns an axial flow driving blade 60, and turns an axial flow compression blade 62 and the shaft 30.