Dictionary of Aviation下(58)

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outcome
Engine oil and cylinder temperature
will also increase as a result of
higher combustion temperatures.  verb
 to result from to happen as a consequence

The structural weakness
resulted from a minor collision while
taxiing two years previously.  to result
in to produce as an effect
Failure to
secure seat belts could result in serious
injury.
resultant resultant /r|zltənt/ adjective that
happens as a result of something
The
temperature of the land rises, causing
the layer of air in contact with it to
warm up and expand with a resultant
decrease in density.  noun one vector
that is the equivalent of a set of vectors
retain 196

When two or more velocities act
simultaneously on a body, the aircraft
movement is called the resultant velocity
due to the two or more component
velocities.
retain retain /r|ten/ verb to keep or to hold

Retentivity is the ability of a material
has to retain magnetism.
When fueldumping,
sufficient fuel must be
retained for landing.
retard retard /r|tɑd/ verb 1. to cause to
occur later, or to delay
On most modern
engines the spark is retarded to top
dead centre, to ensure easier starting
and prevent kick-back. 2. to move backwards

When reducing power, always
retard the throttles before reducing
RPM (revolutions per minute) with the
propeller levers.
retentivity retentivity /rten|tvti/ noun the
ability to remain magnetised after the
magnetising force has gone
Steel has
high retentivity, but soft iron has low
retentivity.
retract retract /r|trkt/ verb to move back,
or to raise
Mechanically operated
sequence valves ensure that the landing
gear does not extend until the doors are
open and that the landing gear is
retracted before the doors close.
retractable retractable /r|trktəb(ə)l/ adjective
possible to pull back or raise 
retractable undercarriage an undercarriage
which can be raised into the
fuselage or wings after use
Early aircraft
had non-retractable undercarriages.
retraction retraction /r|trkʃən/ noun the act
of pulling back or raising  retraction
of the undercarriage the raising of the
undercarriage into the fuselage after use
return /r|t%n/ noun the act of coming
back or going back to a place
We’re
waiting for the return of the aircraft. 
radar return radar echo  adjective 
return flight a flight back to the point
of departure  verb to cause to come
back or to go back to an earlier position
or place
Fly from A to B and return.

The auto-control will return the ailerons
to neutral as the aircraft returns to
level flight.
return valve return valve /r|t%n vlv/ noun a
valve which allows flow of fluid in both
directions
reveal reveal /r|vil/ verb to allow to be seen

Radiographic inspection of the aircraft
structure is able to reveal fatigue
cracks without the need to dismantle the
aircraft.
reversal reversal /r|v%s(ə)l/ noun a change
to the opposite position, direction, or
order
Stationary eddies can be hazardous,
not only because of the down
currents but also because an aircraft
encountering the reversal of direction
might have its airspeed momentarily
reduced below stalling speed.
reverse reverse /r|v%s/ noun the opposite

One would expect a unit of humid air to
be heavier than a similar unit of dry air
but, in fact, the reverse is true.  adjective
going backwards or in the opposite
direction  reverse flow the flow of a
fluid in the opposite direction to normal
 verb to go backwards or in the opposite
direction  to reverse a vehicle to
make a vehicle go backwards
reverse panic reverse panic /r|v%s pnk/ noun
a form of shock which makes passengers
unable to comprehend the need for
urgency
reverser reverser /r|v%sə/ noun  thrust
reverser a device to change the direction
of thrust so that it operates in the
opposite direction to the normal direction

In many turbo-jet thrust reversers,
clamshell doors direct the exhaust
gases forward.
reverse thrust reverse thrust /r|v%s θrst/ noun
thrust in the opposite direction to normal
in order to decelerate the aircraft
after landing
reversible reversible /r|v%sb(ə)l/ adjective
that can be made to go backwards or to
　
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