A variable volume gas generator for charging a self-contained power turbine having heat engines for generating hot compressed gases including a first and second module each forming motor for the production of the hot compressed gases, a third module connected to the first and second modules and which forms an air compressor to charge the heat engines, the modules comprising a fixed housing delimiting an annular space, a plurality of pistons which rotate in the same direction noted in the annular space, wherein four of the pistons are mounted in each module, first and second rods diametrically connecting the pistons in pairs and being further propelled by a cyclical speed variation which causes a volume variation in the space delimited by the radial surfaces of the pistons, a first and second shaft which are coaxial wherein the first rod of each module is mounted on the first shaft and the second rod of each module is mounted on the second shaft such that single connecting rod mechanism rotors of the modules have the same angle of clearance and are synchronous.
展开▼
