compressed-air starting
21tunnels and underground excavations — ▪ engineering Introduction Great tunnels of the world Great tunnels of the worldhorizontal underground passageway produced by excavation or occasionally by nature s action in dissolving a soluble rock, such as limestone. A vertical opening …
22printing — /prin ting/, n. 1. the art, process, or business of producing books, newspapers, etc., by impression from movable types, plates, etc. 2. the act of a person or thing that prints. 3. words, symbols, etc., in printed form. 4. printed material. 5.… …
23Gas turbine — Microturbine redirects here. For turbines in electricity, see Small wind turbine. For turbines driven by the flow of gas, see Turbine. A typical axial flow gas turbine turbojet, the J85, sectioned for display. Flow is left to right, multistage… …
24Paintball — Sport imagesize = 300px caption = Speedball players breaking out at the start of a game union = List of paintball leagues nickname = first = June 27, 1980, Henniker, New Hampshire registered = clubs = contact = No physical contact between players …
25Flexible-fuel vehicle — For other types of vehicles, see Alternative fuel vehicle and Hybrid vehicle. The Ford Model T was the first commercial flex fuel vehicle. The engine was capable of running on gasoline or ethanol, or a mix of both. A flexible fuel vehicle (FFV)… …
26Components of jet engines — Diagram of a typical gas turbine jet engine. Air is compressed by the fan blades as it enters the engine, and it is mixed and burned with fuel in the combustion section. The hot exhaust gases provide forward thrust and turn the turbines which… …
27Stirling engine — Alpha type Stirling engine. There are two cylinders. The expansion cylinder (red) is maintained at a high temperature while the compression cylinder (blue) is cooled. The passage between the two cylinders contains the regenerator …
28Supermarine Spitfire variants: specifications, performance and armament — Spitfire Role Fighter Manufacturer Supermarine Designer R. J. Mitchell First flight 5 March 1936 Introduction 1938 Retired 1955, RAF Primary user Royal Air Force …
29Alternative fuel vehicle — refers to a vehicle that runs on a fuel other than traditional gasoline or diesel; any method of powering an engine that does not involve solely petroleum (e.g. electric car, gasoline electric hybrid, solar powered). Due to a combination of heavy …
30gasoline engine — Most widely used form of internal combustion engine, found in most automobiles and many other vehicles. Gasoline engines vary significantly in size, weight per unit of power generated, and arrangement of components. The principal type is the… …
