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force
The magnitude of the centripetal
force varies with the square of
the wind speed.
In a turn, lift provides
the centripetal force.
certain certain /s%t(ə)n/ adjective 1. particular,
some
in certain areas
at certain
times
under certain circumstances
2. sure
There are certain to be
horizontal differences in the mean temperature
of a layer.  to make certain
to make sure
Make certain that the
parking brake is on before doing engine
run-up checks.
certificate certificate noun /sə|tfkət/ an official
document which states that particular
facts are true  verb /sə|tfket/ to
award or give a certificate  aircraft
which are certificated for flight aircraft
which have the necessary paperwork
to be authorised to fly
certificate of airworthiness certificate of airworthiness /sə|
tfkət əv eəw%ðnəs/ noun a document
issued by an aviation authority
stating that an aircraft meets specific
safety and performance requirements
that allow it to be used in service
An
authorised person may require production
of the Certificate of Airworthiness.
Abbreviation C of A
certification certification /sə|tf|keʃ(ə)n/ noun
the process of giving certificates
The
inferential method of ice detection is
used on flight trials for certification of
aircraft.
certify certify /s%tfa/ verb to authorise or
permit the use of something
The aircraft
is certified for aerobatic flight.
CFI CFI abbreviation chief flying instructor
CFMU CFMU abbreviation Central Flow
Management Unit
CFRP CFRP abbreviation carbon fibre reinforced
plastic
chalk chalk /tʃɔk/ noun a soft white limestone
rock that may be used in powder
form or as a shaped stick for writing
with
Oil, which is trapped in the
defects, is absorbed by the chalk thus
indicating their positions.
chamber chamber /tʃembə/ noun a small
enclosed compartment
chandelle chandelle /ʃn|del/ noun a steep
climbing turn in which an aircraft
almost stalls as it uses momentum to
increase its rate of climb
channel channel /tʃn(ə)l/ noun a special
frequency band for the transmission of
radio signals
The system operates on
VHF communications between 118 and
135.95 MHz giving 360 channels at 50
kHz spacing.
character character /krktə/ noun 1. a quality
or set of qualities which make something
different and separate from something
else
The circulation of the
atmosphere is zonal in character. 2. an
individual letter, number or symbol
used in printing and writing
characterise characterise /krktəraz/, characterize
verb  to be characterised by
to have qualities or features which make
it different and separate from other
things
The stratosphere is characterised
by a temperature structure which is
steady or increases with height.
characteristic characteristic /krktə|rstk/
adjective typical of a class or group of
things  a characteristic feature a normal
feature of the thing in question 
noun a feature or quality making something
different or separate from something
else
Air masses have distinct
characteristics which can be used to
separate them on a chart.  handling
characteristics features of an aircraft
that make it different from other aircraft
when handling it  summer characteristics
climatic conditions which are typical
of summertime
charge charge /tʃɑd"/ noun 1. an amount of
electricity
Friction causes a charge of
static electricity.
The battery was so
old, it would not take a charge.  a high
level of charge a high amount of electricity
2. money demanded or paid for
the providing of a service  overnight
parking is free of charge it costs nothing
to park overnight  verb 1. to pass
electrical current through something
and thereby make it electrically active

43 circuit
An installed battery becomes fully
charged by the aircraft generator. 
charged particles atmospheric particles
which have either a positive or negative
electrical charge 2. to take money
for a service
We do not charge for
overnight parking.
charger charger /tʃɑd"ə/ noun  battery
charger device for putting an electrical
charge into a battery.
turbocharger
　
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本文鏈接地址：Dictionary of Aviation上(40)