the agustawestland aw169 is a twin-engine, 10-seat, 4.8t helicopter developed and manufactured by the helicopter division of leonardo formerly agustawestland, merged into finmeccanica since 2016 . it was designed to utilise a high degree of commonality with the larger agustawestland aw139 and agustawestland aw189
rotational speed or speed of revolution of an object rotating around an axis is the number of turns of the object divided by time, specified as revolutions per minute rpm , cycles per second cps , radians per second rad/s , etc. the symbol for rotational speed is .
water hammer is related to the speed of sound in the fluid, and elbows reduce the influences of pressure waves. arranging the larger piping in loops that supply shorter smaller run-out pipe branches. with looped piping, lower velocity flows from both sides of a loop can serve a branch.
flywheel energy storage fes works by accelerating a rotor to a very high speed and maintaining the energy in the system as rotational energy.when energy is extracted from the system, the flywheel's rotational speed is reduced as a consequence of the principle of conservation of energy; adding energy to the system correspondingly results in an increase in the speed of the flywheel.
shaft mechanical engineering jump to navigation jump to search. a shaft is a rotating machine element, usually circular in cross section, which is used to transmit power from one part to another, or from a machine which produces power to a machine which absorbs power. types. they are mainly classified into two types. .
by extension, the efficiency of the wind turbine is a function of the tip-speed ratio. ideally, one would like to have a turbine operating at the maximum value of at all wind speeds. this means that as the wind speed changes, the rotor speed must change to such that = .
along with the multiplication of torque, there is a decrease in rotational speed of the output shaft compared to the input shaft. this decrease in speed is inversely proportional to the increase in torque. for example, a torque multiplier with a rating of 3:1 will turn its output shaft with three times the torque, but at one third the speed, of .
a steam hammer, also called a drop hammer, is an industrial power hammer driven by steam that is used for tasks such as shaping forgings and driving piles. typically the hammer is attached to a piston that slides within a fixed cylinder, but in some designs the hammer is attached to a cylinder that slides along a fixed piston. the concept of the steam hammer was described by james watt in 1784, but it was not until 1840 that the first working steam hammer was built to meet the needs of forging i
a rotating biological contactor is a type of secondary biological treatment process. it consists of a series of closely spaced, parallel discs mounted on a rotating shaft which is supported just above the surface of the waste water.
the basic principle is strhtforward. a hammer mill is essentially a steel drum containing a vertical or horizontal rotating shaft or drum on which hammers are mounted. the hammers are free to swing on the ends of the cross, or fixed to the central rotor. the rotor is spun at a high speed inside the drum while material is fed into a feed hopper.
a down-the-hole drill, usually called dth by most professionals, is basically a mini jackhammer screwed on the bottom of a drill string.the fast hammer action breaks hard rock into small flakes and dust and is blown clear by the air exhaust from the dth hammer. the dth hammer is one of the fastest ways to drill hard rock.
these shredder designs can be high speed, medium speed and sometimes slow-speed systems, they always include hammermills of a vertical and horizontal shaft design, and can also include in contrast to hammer mills slow speed technology which are also used to process or shred metal and plastic and other waste materials encountered in the scrap .