The connecting rod links the piston to the crankshaft and transmits the force of the power stroke from the piston to the crankshaft.
structural /strkt.(.)r.l/ adjective
referring to the structure of something such as an aircraft . As laid down in the flight manual, the structural limitations must never be exceeded. . structural failure a breaking of part of the aircraft structure
structure /strkt../ noun 1. some-thing constructed . Aircraft structure serves the same purpose for an aircraft as the skeleton for a human body. 2.
framework strut /strt/ noun a bar or rod used to strengthen a structure against forces from the side . A strut is designed to withstand compressive loads.
stub /stb/ noun a short rectangular extension . The plan-form of a military air traffic zone is in the shape of a circle with a stub.
sub-/sb/ prefix 1. of less importance
in rank 2. below sub-beam /sb bim/ noun a less important or minor beam . A lobe is one
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of two, four or more sub-beams that form a directional radar beam.
subject /sbd.kt/ noun a topic or matter for discussion or study . A knowledge and understanding of the subject of ice accretion is essential in order that the hazard can be minimised.
subjected /s.bdekt.d/ adjective .
subjected to affected by or made to experience something . To maintain the pressure difference between two inter-nal engine sections, which are sub-jected to air pressures of different value, a multi-air seal is used. (NOTE: There is an important difference between sub-ject to and subjected to.)
subject to /sbdekt tu/ adjective
likely to be affected by, liable to . The airspeed indicator is subject to error. . Turbine engines are subject to icing during flight through super-cooled droplet cloud. . verb . to subject to to
make something or somebody experi-ence something, often something unpleasant . The aircraft was subjected to rigorous tests.
sublimate /sbl.me.t/ verb to trans-form directly from the solid to the gase-ous state or from the gaseous to the solid state without becoming a liquid .
For hoar frost to form on an aircraft the airframe temperature must be below 0°C (Celsius), so that the surrounding air is cooled to below its dew point and water vapour in contact with the air-craft skin is directly sublimated into ice crystals.
sublimation /sbl.me..(.)n/ noun
transformation directly from the solid to the gaseous state or from the gaseous to the solid state without becoming a liq-uid . In sub-zero conditions sublima-tion will occur when air is cooled below the frost point, producing a deposit of ice crystals.
sub-scale /sb ske.l/ noun a sec-ondary, not main, scale on an instru-ment . The barometric pressure is set on the sub-scale and the altimeter main scale displays height or altitude.
subsequent /sbs.kw.nt/ adjec-tive following in time or order . A struc-tural prototype is put through cycles of stressing far more severe than can be expected during the aircraft’s subse-quent operational life. . a subsequent occasion a following occasion
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