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Recirc
Recirc Recirculation.
recirculating ball system Mechanical friction-reducing
technique in which contact between spiral thread of
screwjack and surrounding nut or runner is transmitted
via no-gap stream of bearing balls with rolling contact
only, which after reaching end of nut are returned via
external tube to start.
reclaiming Repairing or otherwise modifying a part or
tool or material to fit it for further use.
Reclama Please reconsider proposed action or decision
(DoD).
RECMF Radio and Electronic Components Manufacturers’
Federation (UK).
recognition In imagery interpretation, determination of
type or class of object without positive identification
(ASCC).
recoil For automatic weapons in aircraft usual measures
are average, peak and counter-*; all are reduced by fitting
muzzle brake.
recommended practices Not mandatory but published
by ICAO.
recon Abb., reconnaissance.
reconciliation Reclaim of baggage by the correct individual,
ie the owner. System has many uses, such as
automatic offload if passenger does not board.
reconfiguration Change in aerodynamics and external
form of aircraft, especially while in flight.
reconnaissance by fire Firing on suspected enemy to
draw retaliatory fire.
reconnaissance exploitation report Written, accompanies
imagery.
reconnaissance pallet Multi-sensor pallet (1) installed in
or under tactical aircraft in lieu of other load.
reconnaissance pod Pod housing reconnaissance sensors
carried externally.
reconnaissance reference point Conspicuous geographic
location from which reconnaissance objectives can be
found.
reconnaissance slipper Fairing housing reconnaissance
sensors carried scabbed against exterior skin.
recontouring Improving leading edge of fan or compressor
blade[s] after erosion in service.
record as target Code for listing target for reference or
future engagement (DoD).
record card Sheet of card, fitting into filing box, issued
for each aircraft, on which were recorded all significant
modifications or repairs to Service aircraft prior to about
1955, when newer systems became available.
recorder Device translating data into hard-copy record
on magnetic tape, wire, film, punched paper tape or other
medium.
recorder data package Integrated airborne systems
providing record of subsystem performance in flight, eg
arming and fuzing of Mirved warheads, for recovery and
ground analysis.
recording accelerometer Counts and stores vertical
acceleration.
recording altimeter Barograph providing permanent
[originally paper] print-out.
recording storage tube Electronic tube which accepts
CRT or other display picture, stores for period (eg 12 h)
and reads out as often as required for analysis, monitor
activation or various conversion processes.
rectangular input
recovered pressure That measured inside duct downstream
of ram inlet.
recovery 1 Retrieval, in air or on surface, of part or
whole of used RPV, target, test missile, spacecraft, instrument
capsule or other inert body.
2 Retrieval of glider (sailplane) that has landed away
from own airfield.
3 Return to base and safe landing (on land or aircraft
carrier) of aircraft.
4 Return of combat aircraft from post-strike base to
home base or designated recycle airfield.
5 Retrieval, normally by crane helicopter, of crashed or
shot-down aircraft, in friendly or enemy territory.
6 Retrieval, by special trailers and vehicles, plus airbags
or jacks, of belly-landed or disabled aircraft.
7 Completion of flight manoeuvre and resumption of
straight/level flight.
8 Conversion of kinetic to pressure (potential) energy in
fluid flow (see ram *).
9 Returning late programme to schedule.
recovery airfield One at which aircraft might land post-
H-hour but from which combat missions are not expected
to be conducted (DoD).
recovery air temperature The air temperature outside the
boundary layer on surfaces not subject to ram. Symbol
T rec .
recovery base Rear-area airfield used for maintenance
and servicing to eliminate need for such services at
airfields in combat zone (USAF).
recovery capsule Capsule containing reconnaissance
pictures, instrumentation records or other data designed
to separate from satellite, ICBM or other carrier and
survive re-entry at preplanned location.
recovery footprint Area within which recovery capsule,
returning manned spacecraft or other object is expected to
fall.
recovery guidance system Displays on flight-director
command bars pitch guidance for recovery during continuous
windshear; also for TOGA to maintain familiarity.
recovery initiation window Small block of airspace
within ASW(4) from which UAV can be guided to touchdown
point.
recovery package Contains devices to assist recovery
and retrieval of re-entry body, eg brightly coloured
buoyant balloons, radio beacons and coloured pyrotechnics.
recovery parachute Parachute fitted to UAV, pilotless
aircraft or test vehicle.
recovery station Occupied by carrier deck crew who run
out to attend each landing aircraft.
recovery temperature See adiabatic recovery temperature.
recovery time Time for gas-discharge tube to return to
neutral under grid control.
REC/PLB Recording and playback.
recreational Self-explanatory; * pilot certificate is issued
by FAA in US for pilot of * vehicle. By 2007 the RPL was
no longer being issued.
RECT Rectangular.
rectangular co-ordinates See cartesian.
rectangular input Input, eg to FCS, which instantaneously
jumps from null to a maximum commanded
value, to give a rate command.
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