A jet engine with continuous and discontinuous impulse, characterized in that it comprises - an air intake diffuser with a cylindrical exterior shape; - a combustion chamber with a spark plug and several fuel injection means and an outlet nozzle, both with the same exterior shape as the diffuser; - an alternative engine with an alternative shaft of said alternative engine connected to a main shaft of the engine by means of a first cam, a first sliding crank and a first tie rod - several means of stopping the main shaft, and; - a pressurized air chamber with a compressor, connected to the main shaft by means of a second sliding crank and a second tie rod and; - -a rotating disk chamber located between the diffuser and the combustion chamber, which allows air to pass continuously or discontinuously from the diffuser to said combustion chamber; said rotating disk chamber has a first flat cover and a second flat cover secured parallel to the cross- section of the diffuser and the combustion chamber, and with dimensions such that they are larger than said cross-sections, and a first and a second geared wheel (7, 8), both arranged in between said covers, wherein the first wheel is connected coaxially to the main shaft of the engine, and the second wheel and both covers are positioned coaxially with the diffuser, with a same secondary shaft parallel to the main shaft. - wherein the fuel injection means are connected to the main shaft by means of several means of intermittent actuation of the injection means, suitable for activating the injection in synchronization with the passage of the air from the diffuser to the combustion chamber. - an air intake diffuser with a cylindrical exterior shape; - a combustion chamber with a spark plug and several fuel injection means and an outlet nozzle, both with the same exterior shape as the diffuser; - an alternative engine with an alternative shaft of said alternative engine connected to a main shaft of the engine by means of a first cam, a first sliding crank and a first tie rod - several means of stopping the main shaft, and; - a pressurized air chamber with a compressor, connected to the main shaft by means of a second sliding crank and a second tie rod and; - -a rotating disk chamber located between the diffuser and the combustion chamber, which allows air to pass continuously or discontinuously from the diffuser to said combustion chamber; said rotating disk chamber has a first flat cover and a second flat cover secured parallel to the cross- section of the diffuser and the combustion chamber, and with dimensions such that they are larger than said cross-sections, and a first and a second geared wheel (7, 8), both arranged in between said covers, wherein the first wheel is connected coaxially to the main shaft of the engine, and the second wheel and both covers are positioned coaxially with the diffuser, with a same secondary shaft parallel to the main shaft. - wherein the fuel injection means are connected to the main shaft by means of several means of intermittent actuation of the injection means, suitable for activating the injection in synchronization with the passage of the air from the diffuser to the combustion chamber.