is directed to first turbine 40 it motivates first turbine 40 to generate a force f 1 in a first direction d 1 when the ignited gas from combustion chamber 30 is directed to second turbine 50 it motivates second turbine 50 to generate a force f 2 in a second direction d 2 that is opposite to first direction d 1 in a preferred embodiment of the invention as shown in fig2 the second turbine 50 is further comprised of a turbine housing 52 with at least two ducts 54 56 combustion chamber 30 connects to turbine housing 52 turbine housing 52 connects to first duct 54 the first duct 54 has a first section 54 a extending from turbine housing 52 in second direction d 2 and a second section 54 b continuing from first section 54 a that is turned reversely to extend in first direction d 1 turbine housing 52 also connects to second duct 56 in a mirror configuration of first duct 54 second duct 56 has a first section 56 a extending from turbine housing 52 in second direction d 2 and a second section 56 b continuing from first section 56 a that is turned reversely to extend in first direction d 1 ignited gas from combustion chamber 30 is directed to second turbine 50 where it enters turbine housing 52 travels through the two ducts 54 56 and exits in first direction d 1 along with the gas from first turbine 40 first turbine 40 and second turbine 50 have movable nozzles for expelling the ignited gas in variable directions first turbine 40 has nozzle 110 as shown in fig2 second turbine 50.