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fixed-price contract
ations in which corresponding places in different quantities
are occupied by coefficients of same power of base (see
floating point).
2 Notation in which base point is assumed to remain
fixed with respect to one end of numeric expressions.
fixed-price contract One which either provides for firm
price, or under appropriate circumstances may provide
for adjustable price; several types, designed to facilitate
proper pricing under varying circumstances (DoD).
fixed-price incentive contract Has provision for adjustment
by formula based on relationship which final
negotiated total cost bears to negotiated target cost as
adjusted by approved changes (DoD).
fixed satellite See geostationary.
fixed slat Forward portion of aerofoil ahead of fixed slot
built into structure.
fixed station Telecommunication station in aeronautical
fixed service.
fixed tank External tank that is non-jettisonable.
fixed target One that does not move relative to local
Earth’s surface.
fixed weight Total mass of aerostat in flying order
without fuel, oil, dischargeable weight or payload.
fix end End of holding pattern flown over fix (1) at
which aircraft enters pattern.
fixer network Radio or radar direction-finding stations
which, operating in conjunction, plot positions of aircraft;
fixer system (obs.).
fixture Small jig for detail subassembly.
fixturing The process of loading a workpiece into a
fixture, determing its precise position and orientation, and
adjusting the machinery program to accommodate future
variations.
fizzer To be on the * = to be on a disciplinary charge
(RAF, WW2).
FJ 1 Fuel jettison.
2 Fast jet; DIC adds directed IR countermeasures,
MAWS missile-approach warning system, OEU
Operational Evaluation Unit, PT pilot training, TS test
squadron.
F j Jet-engine thrust.
FJA Forward jamming antenna.
FJCA Future joint carrier [or combat] aircraft (UK).
F(jω) Fourier transform of a function of time.
FJS Fast-Jet Squadron (A&AEE).
FJTF Fast-Jet Training Fleet (RAF).
FJTS Fast Jet Test Squadron (ATEC).
FLWOEU Fast Jet Weapons Operation [not operational]
Evaluation Unit (RAF Coningsby).
FKR Cosmonautics federation (R).
FL 1 Flight level, usually expressed in hundreds of feet;
thus FL96 = 9,600 ft.
2 Foot-lambert[s] (see luminance).
3 Fan lift.
4 Flight line.
5 Flashing light.
6 Foot-launched
F/L Forced landing (RAF).
FLA 1 Future large aircraft [aeroplane].
2 Foot-launched aircraft.
flade Fan blade.
Flag, FLAG 1 Floor level above ground.
2 Flemish Aerospace Group (Belg.).
3 Four-mode laser gyro, see Flagship.
flame stabilizer
flag Small brightly coloured plate, often Day-Glo red or
orange, or diagonally striped yellow/black, which flicks
into view in panel instrument, spacesuit instrument or any
other subsystem or device, to give visual warning of fault
or impending difficulty such as loss of electric power or
low fuel or signal level.
flag carrier 1 Airline designated as part of bilateral
agreement to fly international route(s).
2 National state airline.
Flage, FLAGE Flexible lightweight agile guided experiment
(anti-missile).
flagman 1 Person carrying chequered flag (formerly)
employed at US airports, and still seen in Russia and other
CIS, to direct arrivals to signalman or airport marshaller
for parking.
2 Person carrying bright flag on tall mast to guide agaviation
pilot towards end of each run.
flag operator Flag carrier.
flagship 1 Normal meaning can apply to airline service
or individual aircraft, or [American, 1930–59] whole fleet.
2 Four-mode laser gyro software/hardware implemented
partitioning, comprising Adiru, ADM, CDU,
GNSSU and MSU.
flag stop Special unscheduled stop by scheduled airlift
mission aircraft to load or unload traffic (USAF).
flag tracking Method of tracking helicopter rotor by
holding fabric flag against blade tips coated with wet
paint.
flak AAA fire.
flak curtain Self-explanatory protection of occupant[s]
or vital equipment, usually multi-ply nylon fabric.
flakship Small German warship tasked with defending
other vesels against air attack (WW2).
flak-suppression fire Air-to-ground fire used to suppress
AA defences immediately before and during air attack on
surface targets (DoD). This definition should be amended
to allow use of ASMs, cluster bombs etc.
FLAM Future land-attack missile.
flame attenuation Attenuation of radio signal by ionisation
in rocket exhaust.
flame bucket See flame deflector.
flame chute Concrete and metal duct carrying flame and
gas from bottom of silo or test pit to surface.
flame damper 1 Pre-radar shroud or extension to piston
engine exhaust pipe to prevent visual detection at night.
2 See flame trap.
flame deflector Deflects hot gas of vertical-launch
rocket engine from ground or from launching structure.
flame float Pyrotechnic marker that burns on water
surface. Principal purpose is to facilitate measurement of
drift at night.
flame front Boundary of burning zone progressing
through combustible mixture. For kerosene, the flow
velocity must not exceed c10m (33ft)s -1 .
flame hardening Hardening metal surface by flame.
flameholder Body mounted in high-velocity
combustible flow to create local region of turbulence and
low velocity in which flame is stabilized.
flameout Cessation of combustion in gas turbine or
other air-breather from cause other than fuel shutoff.
flamer Aircraft on fire in air, especially in air combat.
flame-resistant Not able to propagate flame after ignition
source is removed.
flame stabilizer Flameholder.
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