时间：2011-03-11 23:13来源：蓝天飞行翻译 作者：admin 点击：次
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flooded engine (aircraft engine condition). A reciprocating engine that has too much fuel in its cylinders for it to start, or a turbine engine that has so much fuel in its combustors that it would create a fire hazard or a hot start if the fuel were ignited. flow chart. A diagram that uses special symbols connected by arrows or lines to indicate the sequence of step-by-step procedures that must be followed to accomplish a given task. Flow charts are used to design a computer program and to explain processes that take place in manufacturing. flow control (air traffic control). Measures designed to adjust the flow of traffic into a given airspace, along a given route, or bound for a given airport in order to ensure the most effective utilization of the airspace. flow-control valve (fluid power system component). A fluid power valve that controls the direction or amount of fluid flow. Most fluid power systems use both flow-control and pressure-control valves. Check valves and selector valves are examples of flow-control valves. flow divider (turbine engine component). A component in a turbine engine fuel system that routes all of the fuel to the primary nozzles or primary orifices when starting the engine and when the RPM is low. When the engine speed builds up, the flow divider shifts and opens a passage to send the majority of the fuel to the secondary nozzles or orifices. flow divider (reciprocating engine component). The valve in an Precision Airmotive RSA fuel injection system that divides the fuel from the fuel control unit and distributes it equally to all of the cylinders. The flow divider in an RSA fuel injection system compares with the manifold valve in a Teledyne-Continental system. flow indicator (aircraft oxygen system). An indicator visible to the wearer of an oxygen mask that shows when oxygen is flowing into the mask. fluctuate. To swing back and forth or to shift a value between a high and a low limit. fluctuating arc (electric arc welding condition). A malfunction in an electric arc welding system that causes the arc to vary its intensity. A fluctuating arc is caused by an inadequate electrical ground. fluid. A form of material whose molecules are able to flow past one another without destroying the material. Gases and liquids are both fluids. Fluids tend to conform to the shape of their container. fluidics. The branch of technology that uses a flow of fluids through specially shaped ducts and nozzles to sense, measure, and control a physical condition. Fluidics does not involve the use of moving mechanical parts. fluid mechanics. The branch of science and technology that deals with forces produced by fluids, either gaseous or liquid. Hydraulics is the branch of fluid mechanics that deals with forces produced by incompressible fluids (liquids). Pneumatics is the branch of fluid mechanics that deals with forces produced by compressible fluids (gases). fluid ounce. A unit of liquid volume which is equal to 1/16-liquid pint, or 1.8 cubic inches. |
