Compensationnoun money paid to an individual or organization to replace or make up for physical or financial loss o The company paid out $2 million in compensation to the families of those who lost their lives in the tragedy. compilationnoun the putting together of suitable information o The manual is a compilation of materials used by each of the instructors.
completeadjective 1.containing all the parts it should contain o The centre section can be constructed either as a complete unit or as two separate units. 2. absolute and total ■ verb 1. to finish or make whole o The number of revolutions for the crankshaft to complete a full cycle is always two. □ complete the work to continue until the work is finished 2. to fill in information □ complete the flight plan to fill in the required information in the flight plan
complex‘ adjective complicated and therefore possibly difficult to understand o Of all the pre-departure activities, route planning is one of the most complex. ■ noun 1. a whole made up of many different parts □ a cumulonimbus cloud complex a collection of cumulonimbus clouds forming a system 2. a building made up of many different parts □ the terminal three complex the main building and associated buildings which together make up terminal three complexitynoun the condition of being complex, or a complication o Up-to-date design does not necessarily mean structural complexity.
complicationnoun a difficulty or problem o The complication with the Mercator’s projection is that great circle directions must be converted to rhumb line directions by the application of conversion angle before they can be plotted.
complyverb to be or do what is required by an instruction or law o Equipment and furnishings of modern jet transports must comply with safety regulations. o Passengers must comply with the no-smoking signs. (note: complying – complied) componentnoun 1.a part of an aircraft, aircraft system or piece of equipment o The undercarriage is made up of a number of different components. 2. one part of a force such as wind which consists of a number of different parts 3. a substance which forms part of a compound composeverb to make something from a number of parts o The atmosphere is composed of a mixture of gases.
compositeadjective referring to something made up of a number of different parts composite material The flight crew route flight plan is a composite document which serves as a navigation log. noun a lightweight but very strong man-made material used in aircraft manufacturing o To make a composite it is necessary to combine the reinforcing glass fibres with special glue or resin. (note: The word composite was originally an adjective, but through frequent usage the term composite material has been shortened to composite.) ‘Canadian Aerospace Group (CAG) is working with Pratt & Whitney Canada on a turboprop-powered version of its Wind eagle all-composite light aircraft’ [Flight International 16-22 July 1997] comment: Composites are used in the construction of many modern aircraft, from gliders to aircraft such as the Airbus A320, because they are strong and lighter than metals.
compoundadjective referring to something made up of two or more parts or substances ■ noun a substance made up of two or more components o A chemical compound has qualities that are different from those of the substances from which it is made. o Advances in sealing compounds have now made fuel tanks less liable to leaks.
compression strokenoun the stage of an internal combustion cycle when the fuel/air mixture comes under pressure from the upward-moving piston compressiveadjective referring to forces caused by pressure on a surface o A strut is designed to withstand compressive loads.
compressive stressnoun the resistance of a body to crushing by two forces acting towards each other along the same straight line compressornoun a device such as a pump to compress air, in order to increase pressure o A shaft connects the turbine to the compressor. : axial
compriseverb to be made of (note: The correct use of comprise is often disputed. Some people regard it as a synonym for the verb consist of, while others believe it should be used in an opposite sense: a tank, pipes, a filter, a pump and a carburettor comprise the fuel system. It is sometimes used in its passive form: the fuel system is comprised of a number of different parts.)
concentrateverb 1.to collect in a particular place rather than spread around o Most of the mass of air is concentrated at the lowest levels of the atmosphere. 2. to give attention and thought to something in particular o This chapter concentrates on charts. □ to concentrate hard to give all one’s thought and attention to something
concentrationnoun 1. the fact of being collected in a particular place rather than spread around o The maximum concentration of ozone is between 20 and 25 km above the Earth’s surface. 2. the act of giving attention and thought to something In
commutatornoun a device containing metal bars connected to the coils of a generator to produce electrical current o As the power output required is DC not AC, a commutator is fixed at one end of the armature.
compactadjective small, close together, or not taking much space o The annular system, as used on modern aircraft, provides a compact system, and, for the same output and mass flow, a shorter system. ■ verb 1. to make smaller or more dense by pressing 2. to compress, by driving over with heavy machinery o When taxiing on grass, aircraft wheels compact the earth as the aircraft moves over it.
compactionnoun the act of pressing things together to form one, or of compressing something to make it hard o The speed of impact when the aircraft passes through a snowstorm causes compaction of snow-flakes into a solid mass on leading edges and air-intakes.
compareverb to find the similarities and dissimilarities between two or more things o When the chart is properly orientated, it is easier to compare the distance between landmarks on the ground with their corresponding distances on the chart. o An aneroid barometer is small compared with a mercury barometer. (note: Compare with is regarded by some as better usage than compare to.)
compatibleadjective referring to a component or system which can be used with a different component or system without causing any problems o Computer software designed for one particular system may not be compatible with other systems.
conenoun a solid body with a base in the shape of a circle, and with sides which narrow to a point, or any object which has that shape configurationnoun the pattern or way in which things are arranged □ configuration of an aircraft’s fuel tank system the way in which the tanks are laid out confine/ verb 1. to limit to a particular area o Cooling is confined to the air in contact with the ground. o The damage was confined to a small area. 2. to limit to a given subject □ the report confines itself to the incident of 3rd January the report deliberately does not mention anything other than the incident of the 3rd January confinedadjective limited, small □ a confined space a small defined space which does not allow free movement
confirmverb to agree that something is correct, or to repeat it to remove any uncertainty o The attitude indicator shows that the aircraft is in a nose down attitude and the increasing airspeed confirms that the aircraft is not in level flight. o Can you confirm that the instructor was flying the aircraft at the time of the collision? o VHF and/or UHF radio aids confirm ADF bearings.
Comment: Cross-checking of certain flight instruments is used to confirm readings from other instruments, e.g. the airspeed indicator and vertical speed indicator confirm pitch information from the attitude indicator.
conformverb to correspond to required standards Fuels must conform to strict requirements. □ to conform to regulations to do what is required by rules and regulations conformaladjective representing angles, bearings, etc., correctly o Lambert’s conformal projection
Congestionnoun a situation where there are too many people or vehicles in a confined space for them to be able to move freely o When leaving the aircraft in an emergency, to avoid congestion, passengers should be directed to move away from exits quickly.