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contractor-furnished weight, CF weight
supplied by contractor to support programme; esp. items
normally GFE, bought-out or supplied from other
source.
contractor-furnished weight, CF weight Total mass of
aircraft in precise state in which ownership is transferred
to customer.
contract oversight Ongoing monitoring of contracts,
with particular attention to finance and national security
(DoD). Does not mean to fail to notice an irregularity.
Contrafan Registered name for studies of advanced
direct-drive shrouded propeller engines in Mach 0.9 class
(Rolls-Royce).
contra-flow engine Loosely, any engine involving fluid
flow in opposite directions; specif., gas turbine having
compressor and turbine back-to-back, with flows
(1) axially towards each other and radially out together,
(2) radially out from compressor and radially in through
turbine, or (3) forward through compressor and back
through ducts to turbine.
contrail Condensation trail (abbn. not admitted by
NATO).
contra-injection Upstream injection of fuel droplets into
airflow or of one liquid rocket propellant against another.
contra-orbit defence Supposed technique of defending
area by launching missile along predicted trajectory or
orbit of hostile weapon.
contrapop Contra-rotating propeller.
contra-rotating 1 Two or more propellers rotating at
equal speed in opposite directions on common shaft axis,
and sharing common drive.
2 Installation of similar tandem piston engine/propeller
combinations back-to-back on opposite ends of common
nacelle. (Not to be used for propellers rotating in opposite
directions but not on common axis. See
counter-rotating, handed.)
3 Of any rotating assembly, turning in opposite directions,
possibly at different speeds.
contrast Difference in luminous intensity between
different parts of picture (photograph, radar display,
synthetic display or TV).
control 1 Exercise of civil or military authority, eg over
air traffic.
2 In hardware system, device governing system
operation.
3 In man/machine system, device through which
human command is transmitted across interface.
4 In photogrammetry, points of known position and
elevation.
5 In research experiment, unmodified test subject used
as yardstick.
control airport See tower airport.
control and reporting centre Subordinate air-control
element of tactical air control centre from which radar
control and warning operations are conducted within its
area of responsibility (USAF, NATO etc).
control and reporting system Organisation set up for (1)
early warning, tracking and identification of all air and
sea traffic, and (2) control of all active air defence.
control anticipation parameter In a sudden large nose-up
command, ratio of initial to steady-state normal acceleration
[in simple manual aircraft].
control area Controlled airspace extending upwards
from specified height (ICAO prefers ‘limits’) above Earth
(NATO adds ‘without upper limit unless specified’).
control line
control augmentation system See command augmentation.
control bar Main pilot’s input to hang glider.
control cable Physical connection between human
control (3) and operating system, esp. between pilot’s
flying controls and control surfaces.
control car Housing pilot or coxswain of airship.
control centre See launch **.
control column Aerodyne trajectory control (flight
control input) normally exercising authority in pitch and
roll. May be stick, wheel, miniature sidestick or spectacles
(see yoke).
control-configured vehicle See CCV.
contrôle auto généralisé Voice + computer (F).
control feel See feel.
control-force gradient Increase in hinge moment with
indicated airspeed.
control jet See reaction control jet.
controllable-pitch propeller Capable of having blade
pitch manually altered in flight, either to set positions or
over infinite range (but not c/s).
controllable rocket Having rate of combustion of liquid,
solid or hybrid propellants capable of being varied at will
during burn.
controllable twist Helicopter rotor blade capable of
changing angle of incidence in predetermined manner
from root to tip in course of flight.
controlled aerodrome One at which ATC service is
supplied to aerodrome traffic (does not imply existence of
control zone).
controlled airspace Airspace of defined dimensions
within which ATC service is provided (ICAO adds ‘to
controlled flights’). Can be IFR only, IFR/VFR or visual
exempted [no control provided].
controlled attack Bombing target with Master Bomber
in attendance (RAF WW2).
controlled-emissivity material Substrate or surface
coating designed to reduce IR signature.
controlled environment One in which such variables as
temperature, pressure, atmospheric composition, ionising
radiation and humidity are maintained at levels suitable
for life or hardware.
controlled flight Provided with ATC service.
controlled flight into terrain Unexpectedly encountering
terra firma (land or water, but usually hills or mountains),
the No 1 killer in commercial aviation. The flight need not
be controlled (see previous); definition means PIC has not
lost control.
controlled interception One in which interceptors are
under positive control (from ground, ship or AWACS).
controlled leakage Environment for life or hardware in
which harmful products (eg carbon dioxide) are allowed
to leak away and be replaced by fresh oxygen or other
material.
controlled mosaic One in which distances and directions
are accurate.
controlled response Chosen from range of options as
being that giving best all-round result.
controlled torque tightening Use of special adjustable
tool to tighten bolts/nuts etc according to material, diameter,
plating and lubricant.
control line 1 Connection between operator and **
aircraft.
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