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efficiency the efficiency of conversion
of fuel energy to kinetic energy
efficient efficient /|fʃ(ə)nt/ adjective able to
act or produce something with a minimum
of waste, expense, or unnecessary
effort At some speeds and altitudes
the pure jet engine is less efficient than
a piston engine. efficient combustion
combustion in which fuel energy is used
to its maximum capability
effort effort /efət/ noun 1. the use of physical
or mental energy to do something
In order to qualify for a licence, it is
necessary to put some effort into the
training course. Flying a high performance
aerobatic light aircraft to its
limits requires a lot of physical effort on
the part of the pilot. 2. force applied
against inertia Actuators are capable
of exerting low-speed turning effort.
EFIS EFIS abbreviation electronic flight
instrument system
eggbeater eggbeater /e$bitə/ noun a rotarywing
aircraft (informal)
EGNOS EGNOS noun a European system that
improves the quality of data from existing
satellite navigation systems to make
the data suitable for use by aircraft. Full
form European Geostationary Navigation
Overlay Service (NOTE: The
US equivalent is WAAS.)
EICAS EICAS noun a cockpit display for
monitoring the engines and warning of
malfunction. Full form engine indicating
and crew alerting system
eject eject /|d"ekt/ verb to throw out forcefully
On depressurisation the oxygen
mask is ejected automatically from the
service panel.
ejection ejection /|d"ekʃən/ noun an act of
throwing out forcefully ejection seat
ejection seat ejection seat /|d"ekʃən sit/, ejector
seat /|d"ektə sit/ noun an emergency
escape seat in military aircraft
81 electronic
which is fired out of the aircraft while
the crew-member is still in it
ejector ejector /|d"ektə/ noun 1. a device to
throw something out forcefully 2. a
device using a jet of water, air, or steam
to withdraw a fluid or gas from a space
A jet transfer pump or fuel ejector is
used to transfer fuel.
elapse elapse /|lps/ verb to pass The
radio altimeter works on the principle
that, if the path followed by the radio
wave is straight down and up, then the
elapsed time between the outgoing and
incoming signal is a function of the aircraft’s
height.
elastic elastic /|lstk/ adjective flexible,
easily returning to its original shape
after being stretched or expanded At
low values of stress, if the plot of stress
and strain is a straight line, this indicates
that the material is elastic within
this range.
elasticity elasticity / l|ststi/ noun the property
of returning to an original form or
state following deformation Titanium
falls between aluminium and stainless
steel in terms of elasticity, density and
elevated temperature strength.
electric electric /|lektrk/ adjective powered
or worked by electricity
electrical electrical /|lektrk(ə)l/ adjective 1.
referring to electricity an electrical
fault 2. powered or worked by electricity
Activation may be mechanical or
electrical.
electric current electric current /| lektrk k rənt/
noun the mass movement of electric
charge in a conductor
electricity electricity /| lek|trsti/ noun an
electric current used to provide light,
heat, power
electric power electric power /| lektrk paυə/
noun electricity used to drive machines
or devices
electro- electro- /|lektrəυ/ prefix electricity
electrode electrode /|lektrəυd/ noun a solid
electrical conductor through which an
electric current enters or leaves an electrolytic
cell A battery has a positive
and a negative electrode.
electrolyte electrolyte /|lektrəlat/ noun a
chemical compound that becomes conductive
when dissolved or molten The
electrolyte in a lead-acid battery consists
of sulphuric acid diluted with distilled
water.
electrolytic electrolytic /| lektrə|ltk/ adjective
electrolytic cell a cell consisting of
electrodes in an electrolyte solution
electro-magnet electro-magnet /| lektrəυ
m$nt/ noun a magnet consisting of
a coil of insulated wire wrapped around
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Dictionary of Aviation上(76)
