shaft 12 see fig1 top and bottom walls 72 also include openings 76 which are shaped to receive end caps 66 see fig1 exhaust gases from the combustion chamber 48 leave the engine through triangularly shaped openings 78 an alternate embodiment of the invention is shown in fig9 11 and 13 with this embodiment the rotary engine includes a rotor 10 39 which extends about the outer periphery of a central stator generally designated 24 39 the rotor 10 39 and stator 24 39 are concentric with each other about a common area 94 which is open and may serve as a payload carrying area command center or the like the outer rotor 10 39 includes three lobes or noses 18 39 which are part of an inwardly facing camming surface 14 39 the stator 24 39 includes an annular wall 26 39 which in turn includes offset walls 28 39 a pair of opposing v shaped blades 30 each include a cylindrical pivot body 32 which is received within a correspondingly shaped cylindrical recess 34 39 formed in the stator 24 39 the blades 30 are identical to the blades 30 see fig3 and 4 of the previously described embodiment in both construction and function similarly the lobes 18 39 of the rotor 10 39 are identical in contour and function.