3-stroke/6-stroke rocket jet engine

An engine or a pump comprising at least:

• a housing (A) having a cylinder space;
• an output shaft unit (B) composed of one or two or more pistons, a ring disk, and an output disk capable of an isokinetic circular rotation in said cylinder space;
• a rotor (C) capable of the isokinetic circular rotation at a constant rotation specific speed with respect to the rotation of said piston;
• a rotor guide (D) having the same center as said output shaft unit (B) and in charge of the inside of said cylinder, having a recess surface contact holding portion with said rotor (C) and a planar contact outer peripheral surface with said piston, and supporting the center of said output shaft unit (B) and said rotor (C) making the isokinetic circular rotation;
• and
• driving means (E) giving an operation to said piston, wherein
• the cylinder of said housing (A) has a notch portion for sealing in planar contact with a part of the outer peripheral surface of said rotor (C) at a part of the inner peripheral wall surface thereof;
• a piston of said output shaft unit (B) is configured such that its outer peripheral surface makes the isokinetic circular rotation while in planar contact with the inner peripheral wall surface of said cylinder;
• and
• the rotor (C) has a piston accommodating portion for accommodating the piston during the rotation thereof and is configured to engage with the piston and to rotate while a distal end of the piston accommodating portion keeps a pressure boundary by linear contact with a front-and-rear surface in an advancing direction of the piston and in linear contact with the front-and-rear surface and to send the piston to the other side of the cylinder.