Dictionary of Engineering

cloud testwith radio to position an aircraft over a target and can therefore attain a state of thermodynamicthat is normally difficult to locate or is invisibleequilibrium. Also known as isolated systhatto the pilot. { ¦klōs kəntrōl rādär }tem. { ¦klōzd sistəm }close-coupled pump [MECH ENG] Pump with close nipple [ENG] A short length of pipe thatbuilt-in electric motor (sometimes a steam turclose-offis completely threaded. { klōs nipəl }bine), with the motor drive and pump impellerrating [MECH ENG] 1. The maximumon the same shaft. { ¦klōs ¦kəpəld pəmp } allowable pressure drop to which a valve can beclosed-belt conveyor [MECH ENG] Solidsmumallowable pressure drop between the out-subjected at commercial shutoff. 2. The maxiconveyingdevice with zipperlike teeth that meshto form a closed tube wrapped snugly around the let of a three-way valve and either of the twoconveyed material; used with fragile materials. inlets, or between the inlet and either of the two{ klōzd ¦belt kənvāər }outlets. { klōz ȯf rādiŋ }closed cycle [THERMO] A thermodynamic cycle closer [CIV ENG] 1. In masonry work, the lastin which the thermodynamic fluid does not enter brick or other masonry component that is laidor leave the system, but is used over and over in a horizontal course. Also known as closure.again. { klōzd sīkəl }2. A stone course that extends from one window-closed-cycle turbine [MECH ENG] A gas turbine sill to another. { klōzər }in which essentially all the working medium is close-talking microphone [ENG ACOUS] A mi-continuously recycled, and heat is transferred crophone designed for use close to the mouth,through the walls of a closed heater to the cycle. so noise from more distant points is suppressed.{ ¦klōzd ¦sīkəl tərbīn }Also known as noise-canceling microphone.closed fireroom system [MECH ENG] A fireclosingline [MECH] The vector required to{ klōs tȯkiŋ mīkrəfōn }room system in which combustion air is suppliedvia forced draft resulting from positive air preswhosesum is zero (such as the forces acting oncomplete a polygon consisting of a set of vectorssure in the fireroom. { ¦klōzd fīrrüm sistəm }closed loopa body in equilibrium). { klōziŋ līn }[CONT SYS] A family of automaticcontrol units linked together with a process toclosing machine [ENG] A machine for manufac-form an endless chain; the effects of control acandstrands into rope. Also known as strandingturing wire rope by braiding wire into strands,tion are constantly measured so that if the conmachine.{ klōziŋ məshēn }trolled quantity departs from the norm, the conclosingpressure [MECH ENG] The amount oftrol units act to bring it back. { ¦klōzd lüp }static inlet pressure in a safety relief valve whenclosed-loop control system See feedback controlthe valve disk has a zero lift above the seat.system. { ¦klōzd ¦lüp kəntrōl sistəm }{ klōziŋ preshər }closed-loop telemetry system [ENG] 1. A teleclosureSee closer. { klōzhər }metry system which is also used as the displaycloth wheel [DES ENG] A polishing wheel madeportion of a remote-control system. 2. A sysofsections of cloth glued or sewn together.tem used to check out test vehicle or telemetry{ klȯth wēl }performance without radiation of radio-frecloud-detectionradar [ENG] A type of weatherquency energy. { ¦klōzd ¦lüp təlemətrē sisradar designed specifically for the detection oftəm }clouds (rather than precipitation). { klau˙ dclosed nozzle [MECH ENG] A fuel nozzle havingditekshən rādär }a built-in valve interposed between the fuel supcloud-dropsampler [ENG] An instrument forply and combustion chamber. { ¦klōzd näzəl }collecting cloud particles, consisting of a samclosedpair [MECH] A pair of bodies that are pling plate or cylinder and a shutter, which is sosubject to constraints which prevent any relative arranged that the sampling surface is exposedmotion between them. { ¦klōzd per } to the cloud for a predetermined length of time;closed respiratory gas system [ENG] A self- the sampling surface is covered with a materialcontained system within a sealed cabin, capsule, which either captures the cloud particles oror spacecraft that will provide adequate oxygen leaves an impression characteristic of the imforbreathing, maintain adequate cabin pressure, pinging elements. { klau˙ d dräp samplər }and absorb the exhaled carbon dioxide and water cloud-height indicator [ENG] General term forvapor. { ¦klōzd resprətȯrē gas sistəm } an instrument which measures the height ofclosed shop [IND ENG] An establishment per- cloud bases. { klau˙ d hīt indəkādər }mitting only union members to be employed. cloud mirror See mirror nephoscope. { klau˙ d{ ¦klōzd shäp } mirər }closed steam [ENG] Steam that flows through cloud point [CHEM ENG] The temperature ata heating coil or annulus so that there is no which paraffin wax or other solid substance bedirectcontact between the steam and the mate- gins to separate from a solution of petroleumrial being heated. { ¦klōzd stēm } oil; a cloudy appearance is seen in the oil at thisclosed system [ENG] A system for water han- point. { klau˙ d pȯint }dling that does not permit air to enter. [THER- cloud test [CHEM ENG] An American Society forMO] A system which is isolated so that it cannot Testing and Materials method for determiningexchange matter or energy with its surroundings the cloud point of petroleum oil. { klau˙ d test }107