Liquid Rocket Engine Design

I need a complete preliminary design for a liquid-propellant rocket engine. The exact configuration—bipropellant, monopropellant, or cryogenic—will be chosen after an initial trade study, so the first... (Budget: €250 - €750 EUR, Jobs: Aeronautical Engineering, Aerospace Engineering, CAD/CAM, Engineering Drawing, Finite Element Analysis, Mechanical Engineering, Solidworks, Thermodynamics)