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Rutherford is a liquid-propellant rocket engine designed by aerospace company Rocket Lab [8] and manufactured in Long Beach, California. [9] The engine is used on the company's own rocket, Electron. It uses LOX (liquid oxygen) and RP-1 (refined kerosene) as its propellants and is the first flight-ready engine to use the electric-pump-fed cycle.
Principally used for land drainage, early scoop wheels were wind-driven [1] but later steam-powered beam engines were used. [2] It can be regarded as a form of pump. A scoop wheel produces a lot of spray. They were frequently encased in a brick building.
Sprayers range in size from man-portable units (typically backpacks with spray guns) to trailed sprayers that are connected to a tractor, to self-propelled units similar to tractors with boom mounts of 4–30 feet (1.2–9.1 m) up to 60–151 feet (18–46 m) in length depending on engineering design for tractor and land size.
Liquid propellants are often pumped into the combustion chamber with a lightweight centrifugal turbopump. Recently, some aerospace companies have used electric pumps with batteries. In simpler, small engines, an inert gas stored in a tank at a high pressure is sometimes used instead of pumps to force propellants into the combustion chamber.
Hand-powered force pump, with an air chamber to smooth out variations in flow rate. Hand pumps are manually operated pumps; they use human power and mechanical advantage to move fluids or air from one place to another. They are widely used in every country in the world for a variety of industrial, marine, irrigation and leisure activities.
Stompers are battery-powered toy cars that use a single AA battery and feature four-wheel drive. They are driven by a single motor that turns both axles. They were the first battery-powered, electric, true 4WD toys. Stompers were created in 1980 by A. Eddy Goldfarb [1] and sold by Schaper Toys.
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