Dictionary of Aviation下(77)

曝光台 注意防骗 网曝天猫店富美金盛家居专营店坑蒙拐骗欺诈消费者

winter and summer
squall squall /skwɔl/ noun a sudden
increase in wind speed lasting for several
minutes
Surface squalls are due
to the spreading out of strong down
draughts at the surface.
Even with a
light mean wind speed, squalls of 50 kt
(knots) or more can occur with sudden
changes in direction.
square square /skweə/ noun a shape with 4
equal sides and 4 right angles  adjective
shaped like a square
a square
panel
square foot square foot /skweə fυt/ noun a
unit of measurement of area, which is
one foot long by one foot wide
square metre square metre /skweə mitə/ noun
a unit of measurement of area, which is
one metre long by one metre wide
The
room is 5m x 9m so the area is 45 square
metres (45m2).
square root square root /skweə rut/ noun
divider of a quantity that, when multiplied
by itself, gives the quantity
3 is
the square root of 9.
squawk squawk /skwɔk/ noun an identification
code.
transponder  verb to activate
specific modes, codes or functions
on a transponder
Garbling occurs
when two signals are received simultaneously
and can be resolved either technically
or by making one of the aircraft
squawk.
squeeze squeeze /skwiz/ verb to press hard
from opposite directions
Static seals,
gaskets and packing are used in many
locations, and these effect a seal by
being squeezed between two surfaces.
SRSR abbreviation sunrise
SSSS abbreviation sunset
SSR SSR abbreviation secondary surveillance
radar
stabilise stabilise /stebəlaz/, stabilize verb
to become steady and unchanging

After the engine has been started,
engine speed is increased to 1,000
r.p.m. (revolutions per minute) until cylinder
head and oil temperatures have
stabilised at normal operating temperatures.
stabiliser stabiliser /steblazə/, stabilizer
noun a device to improve the tendency
of an aircraft to return to its original
attitude after being deflected
COMMENT: Some aircraft have an allmoving
tailplane called a ‘stabilator’ (a
combination of the words stabiliser
and elevator).
stabilitator stabilitator /stə|bltetə/ noun 
stabiliser
stability stability /stə|blti/ noun 1. being stable
or steady
The stability of the Cessna
150 makes it an ideal training air-
217 stall warning system
craft. 2. a state of the atmosphere in
which air will resist vertical displacement

When air moves away from its
source region, the stability of the lower
atmosphere changes.
COMMENT: Stability can be classified
as three types. Positive stability is
the tendency of a body to return to its
original state after being displaced.
Light training aircraft have positive
stability. Neutral stability is the
tendency of a body to remain in the
new position after displacement.
Negative stability is the tendency of a
body to continue moving away from its
original position after displacement.
stability augmentation system stability augmentation system
/stə|blti ɔ$mən|teʃ(ə)n sstəm/
noun a flight control system which
automatically adjusts pitch and yaw to
improve an aircraft’s stability. Abbreviation
SAS
stable stable /steb(ə)l/ adjective 1. steady
2. referring to an atmosphere in which
there is little or no vertical movement

Layer cloud occurs in a stable atmosphere.
stack stack /stk/ verb 1. to put one on top
of the other
By stacking rows of horizontal
dipoles one above the other, a
well-defined electronic glide path can
be transmitted. 2. to keep aircraft circling
at different heights while they are
waiting to land at an airport  noun a
number of aircraft waiting to land at an
airport that are circling at different
heights
stacked stacked /stkt/ adjective circling at
different heights prior to landing
stackup stackup /stkp/ noun same as
stack
stage stage /sted"/ noun 1. one of several
sections, steps, or levels into which a
process can be divided
There are three
stages in the life cycle of a thunderstorm:
process of formation, development
and decay.
Calculate headings
to steer for each stage of the flight. 
cruise stage of the flight the section of
a flight between top of climb after takeoff
and start of descent to land  at a
　
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