42 Engineering; engineering services in the field of aerospace, aeronautics, composite materials, means and systems of propulsion, propulsion bay, motors and engines and power drive units, equipment for such propulsion systems, motors and engines and reusable motors and engines, additive manufacturing for such equipment; engineering services in the fields of integration of such propulsion systems on launch vehicles, space vehicles and machines; technology consulting, namely, analysis and expert appraisal services in the fields of aerospace, aeronautics; technology consulting, namely, analysis and expert appraisal services in the fields of composite materials, means and systems of propulsion, propulsion bay, motors and engines and power drive units, equipment for such propulsion systems, motors and engines and reusable motors and engines; technology consulting, namely, analysis and expert appraisal services in the fields of additive manufacturing for propulsion bay equipment, jet pipe, tanks, space transportation vehicles and apparatus as well as the motors and engines and component parts thereof, control valve, turbines, turbocompressor other than for land vehicles; scientific and industrial research in the fields of aerospace, aeronautics, composite materials, means and systems of propulsion, propulsion bay, motors and engines and power drive units, equipment for such propulsion systems, motors and engines and reusable motors and engines, additive manufacturing for such equipment; technical project studies, namely, conducting of feasibility studies in the field of new technologies and engine and launch vehicle technology; testing of machines; testing of materials; engine testing for launch vehicles, space vehicles and machines; testing of propulsion systems, equipment and parts for propulsion systems, propulsion bay, motors and engines and power drive units for launch vehicles, space vehicles and machines; technical inspection service for systems, equipment and parts of aerospace vehicles and machines; technical inspection and quality control of production of engine components using additive manufacturing; service for qualifying systems, equipment and parts of aerospace vehicles and machines, namely, testing, analysis and evaluation of aeronautical propulsion systems including rocket engines and related components; technology consulting, namely, analysis and expert appraisal and data warehousing of technical data recorded during testing campaigns for systems, equipment and parts of aerospace vehicles and machines; designing propulsion systems and propellant stages for launch vehicles, space vehicles and machines; development, design, installation, maintenance, and updating of software for the design, manufacture and operation of space flight and space launch propulsion systems in the fields of aerospace, aeronautics, composite materials, propulsion means and systems, propulsion bay, engine and power units, equipment for such propulsion systems, engines and reusable engines, additive manufacturing for such equipment; leasing of software for rocket engine electronic controller and rocket engine maintenance in the fields of aerospace, aeronautics, composite materials used in spaceflight and space launch propulsion systems, spaceflight and space launch propulsion means and systems, propulsion bay, engine and power units for spaceflight and space-launch propulsion systems, equipment for such propulsion systems, engines and reusable engines for spaceflight or space launch propulsion, additive manufacturing for such equipment; computer programming in the field of space flight and space launch propulsion systems, including the operation, maintenance and manufacture thereof; database design, and database maintenance of online databases for others in the fields of aerospace, aeronautical, composite materials, propulsion means and systems, propulsion power, motors and engines, equipment for such propulsion systems, reusable motors and engines, additive manufacturing for such equipment; research and development of new products for third parties; all of the foregoing pertaining to space launch propulsion systems excluding the use of liquefied natural gas