the Aviation Dictionary

static stop step turn
static stop - In rotorcraft, a device used to limit the
blade flap, or rotor flap, at low r.p.m. or when the rotor
is stopped.
static system - Plumbing that connects the altimeter,
airspeed indicator, and vertical speed indicator to the
outside static air source of the airplane. An alternate
source is usually included in this system.
static temperature - A temperature measurement of air
not in motion.
stator - 1. The stationary part of an electrical machine
such as a motor or alternator. 2. The stationary portion
of an axial flow turbojet compressor. 3. The discs in a
multiple-disc brake that are keyed to the axle and do
not rotate.
stator case - The outer engine casing that houses either
compressor or turbine stator vanes.
stator vane - Stationary vane, either compressor or
turbine.
static test - A method of testing the structural integrity statute mile - A measure of land distance equal to 5280
of an airplane to determine its ability to withstand loads ft. or 1.609 km.
that could possibly be encountered in flight.
stay - A cable or wire, loaded in tension only, used as a
static thrust - The thrust produced by a turbine engine structural member in a truss.
not moving through the air.
steady-state condition - The condition of any system
static tube - A cylindrical tube with a closed end and a that exists when all of the measured values are stable.
number of small openings normal to the axis, pointed
steady-state flight - A condition when a rotorcraft is in
upstream, and used to measure static pressure.
straight-and-level, unaccelerated flight, and all forces
static wick - A small device made of metal braid or are in balance.
graphite-impregnated cotton attached to the trailing
steam - An invisible vapor created when water is heated
edge of a control surface to dissipate accumulated
to the boiling point
electrical charges into the air.
station - The location of a point within an aircraft
steam fog - Sea smoke, evaporation fog.
identified by distance in inches from the datum.
steatite - The massive form of talc. Used for making
ceramic insulating material for high-voltage systems.
station "OW(zero)- The reference point from which
fuselage stations are measured. On some aircraft the
point might be the firewall or the leading edge of the
wing. Stations in front of this would have negative
station numbers and those aft would have positive
station numbers. Station zero is sometimes placed at a
point in space in front of the aircraft so that all station
numbers are positive.
station declination - The orientation with respect to
true north of VHF transmitted signals. The orientation
is originally made to agree with the magnetic variation
(an uncontrollable global phenomenon) at the site.
Hence station declination (fixed by man) may differ
from changed magnetic variation until the station is
reoriented.
station pressure - The actual atmosphere pressure at the
observing station.
station web A built-up section located at some point
of applied force, such as attachments for wings,
stabilizer, etc.
stationary front - Same as quasi-stationary front.
stationary reservations - Altitude reservations that
encompass activities in a fixed area. Stationary
reservations can include activities, such as special tests
of weapons systems or equipment, certain U.S. Navy
carrier, fleet, and anti-submarine operations, rocket,
missile and drone operations, and certain aerial
reheling or similar operations.
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steel -A hard and tough carbon-iron alloy.
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steel wool - An abrasive material made of long, fine,
steel shavings and used for scouring steel parts.
steering damper - A hydraulically actuated device used
to absorb shimmy vibrations from the nose wheel of an
aircraft.
stellite - An extremely hard, wear-resistant metal used
for valve faces and stem tips. Contains cobalt, tungsten,
chromium, and molvbdenum.
stem - The part of a multiple-choice test item consisting
of the question, statement, or problem.
step - A break in the form of the bottom of a float or
hull. Designed to diminish resistance, lessen the
suction effects, and improve longitudinal control.
step leader - The first of a series of events that make up
lightning. Nearly invisible to the eye, it is the path that
carries electrons from the base of the clouds to the
ground, creating an ionized channel for the subsequent
discharge.
step taxi - To taxi a float plane at full power or high
RPM in order to obtain a speed that causes the plane to
rise up on the planing portion of the floats.
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Step turn - A maneuver used to put a float plane in a
planing configuration prior to entering an active sea
lane for takeoff. The STEP TURN maneuver should
only be used upon pilot request.