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iological warfare
biological warfare Warfare involving use as weapons of
biological agents, toxic biological products and plantgrowth
regulators.
biomedical monitoring Strictly ‘biomedical’ is tautological,
but term has come to denote inflight monitoring
of heartbeat, respiration and sometimes other variables,
esp. of astronauts in space.
biometric recognition Identification of individual
humans by their unique features, eg eye iris, finger/
hand-print.
biometry Geometric measurement of life forms, esp.
humans.
bionics Study of manufactured systems, esp. those
involving electronics, that function in ways intended to
resemble living organisms.
bio-pak Container for housing and monitoring life
forms, usually plants, insects and small animals, in space
payload. May be recoverable.
biophage Literally, destructive of life : CBW defence
payload.
BIOS British Intelligence Objectives Sub-committee
(1944 – 46).
biosatellite Artificial satellite carrying life forms for
experimental purposes.
biosensor Sensor for measuring variables in behaviour
of living systems.
biosphere Location of most terrestrial life: oceans,
surface and near-surface of land, and lower atmosphere.
bioterrorism Loosely, germ warfare; hence bioweapons.
Biot-Savart Law for computing induced velocities in a
vortex filament.
biowaste All waste products of living organisms, esp.
humans in spacecraft.
BIP 1 Borescope inspection port.
2 Baggage improvement program (IATA).
biphace coding Standard coding for both the 1553B and
A629 [which see] data buses, also known as Manchester
coding. In this protocol a 1 is signified by a change of
signal from positive to negative during the bit period, and
a 0 [zero] is signalled by a change from negative to
positive.
biplace Two-seat (US, F usage).
biplane Aeroplane or glider having two sets of wings
substantially superimposed (see tandem-wing).
biplane interference Aerodynamic interference between
upper and lower wings of biplane or multiplane.
biplane propeller Propeller having pairs of blades
rotating together in close proximity, resembling biplane
wings.
BIPM Bureau International des Poids et Mesures.
bipropellant 1 As adjective, rocket which consumes two
propellants – solid, liquid or gaseous – normally kept
separate until introduction to reaction process. In most
common meaning, propellants are liquid fuel and liquid
oxidiser, stored in separate tanks.
2 As noun, rocket propellant comprising two components,
typically fuel and oxidiser.
BIR Biennial infrastructure review.
BIRD Banque Internationale pour la Reconstruction et
le Dévéloppement.
bird Any flight vehicle, esp. aeroplane, RPV, missile or
ballistic rocket (colloq.).
bird gun Gun, usually powered by compressed air, for
BIRDiE
firing real or simulated standard birds at aircraft test
specimens to demonstrate design compliance.
BIRDiE Battery integration and radar display equipment
(USA).
birdie Spurious radar echo, usually from PRF
harmonics.
bird impact Birdstrike; design case for all aerodynes
intended for military or passenger carrying use (see standard
bird).
bird ingestion Swallowing of one or more birds by gasturbine
or other air-breathing jet engine, with or without
subsequent damage or malfunction (see ingestion certification).
birdnesting Tendency of chaff to stick together in tight
bundles, hence forming bird(s) nests.
bird strike, birdstrike Collision between aerodyne and
natural bird resulting in significant damage to both.
Certification requirements for large turbofan engines
include the ability to continue to give useful thrust after
ingesting a single large bird [in 2002, one weighing
3.629 kg/8.0 lb, but with more severe demands being
discussed] or various numbers of smaller birds, whilst
running at maximum takeoff power.
Birmabright Trade name of many British alloys of Al,
Mg and Mn.
BIRMO British IR Manufacturers’ Organisation.
birotative Having two components on the same axis
rotating in opposite directions, or in the same direction at
different speeds.
BIS 1 British Interplanetary Society [1933–; office,
London SW8 1SZ] (UK).
2 Board of Inspection and Survey (US Navy).
3 Burn-in screening.
4 Boundary intermediate system.
5 Biometric identification system.
bis Second version of product, equivalent to Mk 2
(F,I,R).
BISA Battlefield Information System Application
(GBAD, UK).
Bise Cold, dry wind in S France.
bi-signal zone Portions of radio-range beam on either
side of centreline where either A or N signal can be heard
against monotone on-course background.
BISMS BIS(4) management system.
BISPA, Bispa British Iron and Steel Producers
Association.
BISS Base and installation security system.
BIST, Bist Built-in self-test.
bistable Capable of remaining indefinitely in either of
two states: thus, bistable switch is stable in either on or off
position (see flip-flop).
bistatic radar Radar whose transmitter and receiver are
at different locations when seen from the target.
BIT 1 Built-in test.
2 Bureau International du Travail (ILO).
bit Unit of data or information in all digital (binary)
systems, comprising single character (0 or 1) in binary
number. Thus, capacity in bits of memory is log 2 of
number of possible states of device. From ‘binary digit’.
Bitching Betty UAV voice system which reminds operator
of fuel state and other important factors.
BITD Basic- instruments training device.
BITE, bite Built-in test equipment.
BIT/Fi Built-in test and fault isolation.
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