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omb rack
devoted to storage of ordnance, tanks and other stores
[today often eliminated].
bomb rack Formerly, attachments in bomb bay or
externally to which bombs were secured; provided with
mechanical or EM release, fuzing and arming circuits and
sometimes other services. Replaced by universal store
carriers tailored to spectrum of weapons.
bomb release line Locus of all points (often a near-circle)
at which aircraft following prescribed mode of attack
must release particular ordnance in order to hit objective
in centre.
bomb release point Particular point in space at which
free-fall ordance must be released to hit chosen target.
bomb-release safety lock Manually activated by captain,
allowed Nav Radar to release NW [RAF V-bombers].
bombsight Any device for enabling aircraft to be steered
to bomb release point, esp. one in which aimer sights
target optically and releases bombs by command.
bomb site Urban area completely cleared of rubble after
WW2 (UK).
bomb trolley Low trolley for carriage of ordnance from
airfield bomb stores to aircraft (and often equipped to
raise bombs into position on bomb racks).
bomb truck Originally [1943–45], bomber engaged in
carpet or non-precision bombing. Today, deliverer of
ordnance to a target marked by a laser in another aircraft
or on ground.
bomb winch Manual or powered winch for hoisting
bombs from trollies into or beneath racks.
bonding 1 Structurally joining parts by adhesive, esp.
adhesives cured under elevated temperature and/or
pressure.
2 Joining together all major metal parts of an aircraft,
especially an aircraft not of all-metal construction, to
ensure low-resistance electrical continuity throughout.
Even where metal structures are squeezed together by
bolts or rivets a bond of copper strip or braided wire must
link them reliably. Bonding is necessary for Earth–return
systems and to dissipate lightning strikes and other electrical
charges safely with no tendency to arcing or spark
formation.
3 Legal agreement linking a pilot to an airline who pays
for his tuition.
bonding noise In older aircraft, radio interference caused
by relative movement between metal parts bonded (2)
together.
Bondolite Low-density sandwich of balsa faced with
aluminium.
Bone B-one next enhancement.
bonedome Internally padded rigid protective helmet
worn by combat aircrew (colloq.).
boneyard Graveyard of unwanted aircraft, usually
stripped of potential spares (colloq.). Particularly refers to
AMARC, Arizona.
bonker Small rocket giving high thrust for a fraction of
a second designed to impart powerful disturbing blow to
extremity of airframe in investigation of aerodynamic/
structural damping.
bonnet Valve hood in aerostat envelope.
BOO Build, own, operate.
boob Noun, error; verb, to make mistake (RAF 1935–).
Boolean algebra Powerful and versatile algebra compatible
with binary system and with functions AND, OR and
NOT.
boosted controls
boom 1 Any long and substantially tubular portion of
structure linking major parts of an aircraft (esp. linking
the tail to the wing or to a short body).
2 Longitudinal structural members forming main
compression and tension members of a wing spar, having
large section modulus as far as possible from wing flexural
axis.
3 Device used in some air-refuelling tanker aircraft in
form of pivoted but rigid telescopic tube steered by aerodynamic
controls until its tip can be extended into a
fuel-tight receptacle on receiver aircraft.
4 Sound heard due to passage of shockwaves from
distant supersonic source, such as SST flying high overhead.
5 Spanwise pipe conveying ag-liquid to spraying
nozzles; hence * width, * pivots.
boom avoidance Technique of flying aircraft for minimal
boom (4) disturbance on ground.
boom avoidance distance Distance along track over
which ** technique is enforced. Hence, BAD (departure)
and BAD (arrival).
boom carpet Strip of Earth’s surface along which
observers hear sonic boom from supersonic aircraft.
boomer 1 Operator of refuelling boom (5) in tanker
aircraft (colloq.).
2 USN submarine armed with ballistic missiles [FBMS]
(colloq.).
Boomerang Aerobatic manoeuvre comprising nearvertical
ascent with rotation about longitudinal axis,
near-stalled apex with rotation about transverse axis,
followed by near-vertical descent with rotation about
vertical axis.
boom microphone Voice microphone carried on
cantilever boom (slender structural beam) pivoted at side
of headset so that it can be moved away from the mouth
for avoiding unwanted speech broadcasting.
boom receptacle Flight refuelling socket on military
aircraft with which a boom (3) forms a fuel-tight connection
despite motion and changes of orientation relative to
tanker.
boom throw-forward Distance along track from origin of
shockwave to ground impact.
boom trough See boom well.
boom well Recess in deck plating of marine-aircraft float
or hull to take end-fitting of struts or booms (1).
boondocks Open land area remote from habitation, esp.
when site of forced landing.
boost 1 Any temporary augmentation of thrust or
power in a mechanical or propulsive system.
2 Excess pressure, over and above a datum, in induction
manifold of piston engine as result of super-charging.
Datum is usually one standard atmosphere.
3 Jettisonable booster rocket for unmanned vehicle
(UK, colloq.).
4 Fast-burning portion of a boost/sustain motor.
boost control Control system, today invariably automatic,
for maintaining suitable boost pressure in aircraft
piston engine and, in particular, for avoiding excessive
boost.
boost/cruise motor Rocket motor having very large but
brief thrust for vehicle launch followed by lower but longduration
thrust for aerodynamic cruise.
boosted controls Aeroplane flying control surfaces in
which balance is reduced and pilot input augmented by
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