open-cycle engine
71VTEC — is also an abbreviation for the verocytotoxin producing Escherichia coli strain O157:H7 .: For the education institution, see Virginia Tech. VTEC (Variable Valve Timing and Lift Electronic Control) is a valvetrain system developed by Honda to… …
72History of perpetual motion machines — The history of perpetual motion machines dates back to the Middle Ages. For millennia, it was not clear whether perpetual motion devices were possible or not, but the development of modern thermodynamics has indicated that they are impossible.… …
73Turbofan — [ CFM56 3 turbofan, lower half, side view.] A turbofan is a type of jet engine, similar to a turbojet. It essentially consists of a ducted fan with a smaller diameter turbojet engine mounted behind it that powers the fan. Part of the airstream… …
74Mazda — This article is about a car manufacturer. For God in Zoroastrianism, see Ahura Mazda. For other uses, see Mazda (disambiguation). Mazda Motor Corporation Matsuda Kabushiki gaisha マツダ株式会社 Type Public (TYO …
75Napier Deltic — engine at the National Railway Museum, York, UK The Napier Deltic engine is a British opposed piston valveless, two stroke diesel engine used in marine and locomotive applications, designed and produced by Napier Son. The cylinders were divided… …
76Pebble bed reactor — Sketch of a pebble bed reactor in Italian …
77PCV valve — The Positive Crankcase Ventilation valve, or PCV valve, is a one way valve that ensures continual evacuation of gases from inside a gasoline internal combustion engine s crankcase.ExplanationAs an engine runs, gases and combustion pressure are… …
78Gas core reactor rocket — Gas core reactor rockets are a conceptual type of rocket that is propelled by the exhausted coolant of a gaseous fission reactor. The nuclear fission reactor core may be either a gas or plasma. They may be capable of creating specific impulses of …
79Spacecraft propulsion — A remote camera captures a close up view of a Space Shuttle Main Engine during a test firing at the John C. Stennis Space Center in Hancock County, Mississippi Spacecraft propulsion is any method used to accelerate spacecraft and artificial… …
80turbine — /terr bin, buyn/, n. any of various machines having a rotor, usually with vanes or blades, driven by the pressure, momentum, or reactive thrust of a moving fluid, as steam, water, hot gases, or air, either occurring in the form of free jets or as …
