E Flashcards
Eddy currents
. Current induced in a metal cup or disc when
it is crossed by lines of flux from a moving magnet.
Eddy current damping
The decreased amplitude of
oscillations by the interaction of magnetic fields. In the case
of a vertical card magnetic compass, flux from the oscillating
permanent magnet produces eddy currents in a damping disk
or cup. The magnetic flux produced by the eddy currents
opposes the flux from the permanent magnet and decreases
the oscillations.
Electronic Flight Display (EFD)
For the purpose of
standardization, any flight instrument display that uses LCD
or other image-producing system (cathode ray tube (CRT),
etc.)
Elevator
The horizontal, movable primary control surface
in the tail section, or empennage, of an airplane. The
elevator is hinged to the trailing edge of the fixed horizontal
stabilizer.
Elevator illusion
The sensation of being in a climb or
descent, caused by the kind of abrupt vertical accelerations
that result from up- or downdrafts.
Emergency
A distress or urgent condition
Empennage
The section of the airplane that consists of the
vertical stabilizer, the horizontal stabilizer, and the associated
control surfaces.
Emphasis error
The result of giving too much attention
to a particular instrument during the cross-check, instead of
relying on a combination of instruments necessary for attitude
and performance information.
Empty-field myopia
Induced nearsightedness that is
associated with flying at night, in instrument meteorological
conditions and/or reduced visibility. With nothing to focus
on, the eyes automatically focus on a point just slightly ahead
of the airplane.
EM Wave
Electromagnetic wave
Encoding altimeter
A special type of pressure altimeter
used to send a signal to the air traffic controller on the ground,
showing the pressure altitude the aircraft is flying.
Engine Pressure Ratio (EPR)
The ratio of turbine discharge
pressure divided by compressor inlet pressure, which is used
as an indication of the amount of thrust being developed by
a turbine engine.
En route facilities ring
Depicted in the plan view of IAP
charts, a circle which designates NAVAIDs, fixes, and
intersections that are part of the en route low altitude airway
structure.
En Route Flight Advisory Service (EFAS)
An en route weather-only AFSS service
En route high-altitude charts
Aeronautical charts for en
route instrument navigation at or above 18,000 feet MSL.
En route low-altitude charts
Aeronautical charts for en
route IFR navigation below 18,000 feet MSL
Equilibrium
A condition that exists within a body when the
sum of the moments of all of the forces acting on the body
is equal to zero. In aerodynamics, equilibrium is when all
opposing forces acting on an aircraft are balanced (steady,
unaccelerated flight conditions).
Equivalent airspeed
Airspeed equivalent to CAS in
standard atmosphere at sea level. As the airspeed and pressure
altitude increase, the CAS becomes higher than it should be,
and a correction for compression must be subtracted from
the CAS.
Evaporation
The transformation of a liquid to a gaseous
state, such as the change of water to water vapor.
Exhaust Gas Temperature (EGT)
The temperature of the
exhaust gases as they leave the cylinders of a reciprocating
engine or the turbine section of a turbine engine.
Expect-Further-Clearance (EFC)
The time a pilot can
expect to receive clearance beyond a clearance limit.
Explosive decompression
A change in cabin pressure faster
than the lungs can decompress. Lung damage is possible.
