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lay off
ICBMs by providing separate sensor/weapon systems for
interception of hostile RVs at different altitudes.
2 More generally, any air defence system designed to
assign different types of weapon to threats approaching in
different height bands.
lay off To redraw engineering part to full scale (has
other meanings concerned with aiming.
layoff Off-loading temporarily surplus employees (US).
layout 1 Gross spatial arrangement of parts of aircraft
(see configuration [1].
2 Arrangement of above-floor payload accommodation,
eg one-class *.
3 Arrangement of drawings on sheet of paper; hence *
draughtsman.
4 Geometrically correct drawing of sheet-metal part
allowing for all bends, setbacks and joggles.
lay-up 1 Basic assembly of parts for FRC structure
before bonding under pressure and possibly heat.
2 To withdraw aircraft from service for modification or
rebuild.
lazy eight Flight manoeuvre in which nose describes
figure 8, upper half above horizon and lower half below.
LB 1 Light bomber.
2 Glider, bomb-carrying (USN, 1941–45).
3 Light bombardment aircraft category, USAAC
1924–32.
4 Laser beam.
5 Free balloon.
lb Pound[s] mass, from Latin libra; as the plural is librae
it is nonsense to write lbs.
l b Beam cantilevered overhang.
LB film Langmuir-Blodgett.
LBA 1 Luftfahrt Bundesamt [office of civil aviation; D-
38020 Braunschweig] (G).
2 Local boarding application, host boarding gate
control.
LBC Linear block (digital) code.
LBCM Locator back-course marker.
lbf Pounds force.
LBG Left back-up generator.
LBH Light battlefield helicopter.
LBI 1 Low-band interrogator.
2 Long-baseline interferometry.
LBJ Low-band jammer; A adds antenna, T transmitter.
LBL 1 Left buttock line.
2 Länder-Behörden der Luftfahrt (G).
LBNL Lawrence Berkeley National Laboratory, CA.
LBO Leveraged buyout.
LBPR Low (under 1.5) bypass ratio.
LBR 1 Local base rescue.
2 Low bit rate.
3 See next.
LBRG, lbrg Laser beam-riding guidance.
LBSA Low-band structural array.
LBSD 1 Land-based strategic deterrent, to replace
existing ICBMs by 2018 (USAF).
2 Laser-based strategic deterrent [concept].
LBSS Low-band subsystem.
lb st Pound[s] force, static thrust.
LBTI Long-burning target indicator.
LBV Lower bevel gearbox.
LBVDS Lightweight broadband variable-depth sonar.
LBW 1 Laser-beam welding.
2 Learn by wire.
LCM
LC 1 Cargo aircraft, cold-weather operation (USAF,
USN).
2 Local call, or control (FAA).
3 Inductance/capacitance.
4 Letter contract.
5 Least-cost.
6 Liquid crystal.
7 Light-case.
8 Load centre.
LCA 1 Light combat aircraft.
2 Large civil aircraft.
3 Layered component architecture.
LCAAS Low-cost autonomous attack system.
LCAC Landing craft, air-cushion.
LCAS Light close air support.
LCB 1 Line of constant bearing.
2 Liquid-cooled brake.
3 Lowest compliant bidder (NATO).
LCC 1 Life-cycle cost.
2 Launch-control centre.
3 Linear cutting cord (canopy).
4 Load-carrying composite.
5 Leadless ceramic chip-carrier.
6 Lateral-control criterion.
7 Loran-C chart.
8 Local command centre.
9 Low-cost carrier[s].
LCCA Lateral-control central actuator[s].
LCCC Launch-control-centre computer.
LCCDU Liquid-crystal crew display unit.
LCCG Low-cost core guidance.
LCCI London Chamber of Commerce and Industry
[air-transport section, London EC4R 1AP] (UK).
LCCMD Low-cost cruise-missile defense (Darpa).
LCCP Launch-control [SAM] computer program.
LCD Liquid-crystal display.
LCDB Low collateral damage bomb.
LCDP Lateral-control departure parameter.
L-CES Limited-capability Earth station.
LCF 1 Low-cycle fatigue; C adds counter, D damage, M
meter.
2 Launch-control facility.
3 Link control field.
LC 50 CBW measure, lethal concentration in atmosphere
required to kill 50% of exposed population.
LCFPD Liquid-crystal flat-panel display.
LCG 1 Load classification group (I–VII, corresponding
to LCN 120 – 10).
2 Liquid-cooled garment.
LCH Light combat helicopter.
LCH 4 Liquid methane.
LCI 1 Low-cost inertial.
2 Low-cost interceptor (Darpa).
3 Logic[al] channel identifier.
LCIF Loss of control in flight.
LCL 1 Local (FAA).
2 Lifting condensation level.
3 Laser centreline localizer.
LCLC Low-cost loitoring carrier [tactical weapon].
LC/LO Numerical percentage cost of least-cost
compared with lo-observables.
LCLU Landing control logic unit.
LCLV Liquid-crystal light valve.
LCM 1 Laser countermeasures.
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