the Aviation Dictionary

risk elements in ADM . role model
risk elements in ADM - In aeronautical decision width of lONM to 30NM and an altitude range of 500
making the four elements considered are the pilot, feet to 10,000 feet AGL.
aircraft, environment, and type of operation.
robot - An automated mechanism built to do fbnctions
risk management - Part of the decision making ordinarily assigned - to humans.
process. Situational awareness, problem recognition,
robotics - The research and development of technology
and good judgment are used to reduce risks.
that deals with the design, application, construction,
rivet - A small metal pin with a specially formed head and maintenance of automated mechanisms.
on one end used to fasten sheet metal together by
rock wool - A mineral wool made by blowing a jet of
upsetting the shank to form a clamping head.
steam through molten rock and used chiefly for heat
rivet cutter - A tool used to cut rivets to the required and sound insulation
length.
rocker arm - A pivoted arm, as in an aircraft
rivet gauge - The transverse pitch or distance between reciprocating engine, used to transfer pushrod motion
rows of rivets.
to a valve stem.
rivet gun - A hand-held pneumatic riveting hammer
used to vibrate aircraft rivets against a heavy bucking
bar to form the upset head.
rivet pitch - The distance between the center of rivet
holes in adjacent rows. Also referred to as rivet
spacing.
rivet set - A tool that fits into a rivet gun used to
hammer against the manufactured head of a rivet so the
bucking bar can form the upset head on the opposite
side of the skin. Also referred to as a rivet snap.
rivet spacing - The distance between the center of rivet
holes in adjacent rows. Also referred to as rivet pitch.
rivet squeezer - A heavy, tong-like clamping machine
used to squeeze the ends of a rivet to form an upset
head.
riveting burr - A small plain washer placed on a rivet
before the rivet is upset. Provides a larger area of
contact on the part than would have been provided with
the rivet alone.
Rivnut - A patented, hollow, blind rivet manufactured
by the B.F Goodrich Company, in which the inside of
the shank is threaded. The upset rivet can be used as a
blind nut.
RNAV approach - An instrument approach procedure
that relies on aircraft area navigation equipment for
navigational guidance.
RNAV DP - A departure procedure developed for
RNAV-equipped aircraft whose ground track is based
on satellite GDMEDME navigation systems.
RNAV way point (WIP) - A predetermined
- geographical - - position used for route or instrument
approach definition or progress reporting purposes that
is defined relative to a VORTAC station position.
road reconnaissance - Military activity requiring
navigation - along roads, railroads, and rivers.
Reconnaissance routelroute segments are seldom along
a straight line and normally require a lateral route
Aircraft Technical Book Company
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rocker arm boss - That portion of the cylinder head of
an aircraft engine that provides support for the rocker
arm shaft.
rocket - A device propelled by the high-velocity
ejection of gases produced by internal ignition of solid
or liquid fuels.
rocket assisted takeoff - An auxiliary means of
assisting an aircraft when taking off. The system
consists of small rockets fastened to the aft structure.
When a heavily loaded aircraft rotates for takeoff, the
jets are fired. he added boost provides extra thrust
needed for takeoff. Once airborne the rockets are
jettisoned. Often abbreviated as JATO.
rocket fuel - Any fuel specifically developed for rocket
engines.
rocket ship - Any spacecraft that uses rocket engines
for propulsion.
rocketry - The study, theory, and development of
rockets.
rocking shaft - A shaft or rod in an instrument that
oscillates or rocks upon its bearings, but does not
revolve.
Rockwell hardness tester - A machine used to
determine the hardness of a material by using a
calibrated weight to press either a diamond pyramid or
a hardened steel ball into the material. A dial indicator
measures the depth of penetration and specifies it with
a Rockwell number.
rods - The cells concentrated on the outside of the
foveal area of the eye that are sensitive to low light and
not to color.
roger - During communications, this indicates: I have
received all of your last transmission. "Roger" should
not be used to answer a question requiring a yes or no
answer.
role model - A person whose behavior in a particular
role is imitated by others.