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LCMS
2 Landing craft, medium.
3 Late change message.
4 Linear chirp modulation.
5 Lance-cartouches modulaire.
6 Logic control module.
7 Lithium/carbon monofluoride.
LCMS 1 Low-cost missile system.
2 Local control and monitoring system.
3 Learning content management system.
LCN 1 Load classification number; scale of values for
paved surfaces indicating ability to support loads without
cracking or permanent deformation.
2 Logistics control numbers.
3 Local communications network.
LCO 1 Life-cycle-oriented.
2 Launch control officer.
3 Limit-cycle oscillation.
4 Low-cost operation[s].
LCOS Lead-computing optical sight; S adds system.
LCoS Liquid crystal on silicon.
LCP 1 Leachable chromate primer.
2 Launch control, or command, post.
3 Landing craft personnel.
4 Lighting control panel.
5 Last clicked position.
LCPC Laboratory for civil engineers (F).
LCPK Low-cost precision kill.
LCPT Life-cycle product team.
LCR Link-connection refusal.
LCS
1 Life-cycle cost sum, ie over whole useful life.
2 Liquid-crystal shutter.
3 Lift/cruise system.
4 Laser camera system.
LCSS 1 Land combat support system.
2 Laser communications spacecraft (or satellite)
system.
3 Liquid cooling sub-system.
LCSTB Low-cost simulation testbed.
LCT 1 Longitudinal cyclic trim.
2 Local civil time.
3 Landing craft, tank (WW2).
LCTD Located.
Lctn Location (FAA).
LCTR, Lctr Locator, suffixes M, O = middle or outer
marker.
LCTS Low-cost targeting system.
LCTV Linac control and transit vehicle.
LCU Laser code unit.
LCV Landing craft vehicles [p adds personnel].
LCWDS Low-cost weapon-delivery system.
LCZ, LCZR, Lczr Localizer.
LD 1 Landing distance.
2 Lunar day.
3 Load device, prefix for designations of standard
family of cargo containers and pallets, each of particular
dimensions and with certificated permissible load.
4 Lower data.
5 Low-drag.
6 Lower deck.
LD D (daytime) weighted sound pressure level.
L/D Lift/drag ratio.
LD 50 CBW measure of lethal dose; that which kills 50%
of exposed population.
LDA Localizer-type directional aid only.
LDU
LDA, LD a Landing distance available [H adds helicopter].
LDB Launch data-bus.
LDC 1 Less-developed countries (ICAO).
2 Lower-deck container.
3 Landsat data continuity [M adds mission].
LDCC 1 Leaded chip carrier.
2 Lower-deck cargo compartment.
LDCM Landsat data continuity mission.
LDCS Local-departure control system, complete
passenger-handling for non-hosted carriers.
LDDC London Docklands Development Corporation
(Stolport).
LDDI Less-developed defence industries.
LDEF Long-duration exposure facility (Shuttle).
L δ , L ∆ Lift due to deflection (aeroelastic or surface rotation),
thus L δ T = lift of tail due to deflection.
L Den Noise level density, noise from all sources summed
through each 24h (EC proposal).
LDFL Lower DFL.
LDG, Ldg 1 Landing gear.
2 Landing.
LDGP Low-drag general-purpose (bomb).
LDGPS Local-area differential GPS.
LDHD Low-density high demand.
LDI Landing direction indicator.
LDIN Lead-in [light system]
LDL Lower-deck lavatory.
LDM 1 Linear delta modulation.
2 Lift/drag meter.
L/D max Maximum attainable L/D.
LDMCRC Lower-deck mobile crew-rest container.
LDMX Local digital message exchange (secure
terminals).
L DN Duration of a noise.
LDNS Laser (or lightweight) Doppler navigation
system.
LDO 1 Limited-duty officer (USN).
2 Lease, develop, operate.
LDOC Long-distance operational control; F adds
facility (HF radio).
LDP 1 Laser designator pod.
2 Landing decision point (helicopter operations from
small platforms).
LDPU Link and display processing unit (ATC).
LDR Low data-rate.
LDr Landing distance required.
L/Dr L/D for maximum range.
LDRF Laser designator rangefinder.
LDRI Laser dynamic range imager.
LDRU Light-duty release unit.
LDS 1 Layered-defence system.
2 Lithium-doped silicon.
3 Laser detecting set.
4 Laser dazzle sight.
LD/SD Look down, shoot down.
LD-SVR Landing slant-visibility meter.
LDT 1 Lateral dispersion at touchdown (generally
10 ft/sec).
2 Laser detector and tracker; SCAM adds strike
camera.
3 Local daylight time.
LDU 1 Lamp driver unit.
2 Launcher decoder unit.
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