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Lapads
Lapads Lightweight acoustic processing and display
system.
Lapam Low-altitude penetrating attack missile.
Lapan National Institute for Aeronautics and Space
(Indonesia).
LAPB Link access protocol, balanced.
LAPCB Live Animals and Perishable Cargo Board
(IATA).
Lapels Large automated production of expendable
launch structures.
Lapes Low-altitude parachute extraction system.
lap joint One sheet edge overlapping its neighbour.
LAPL Light Aircraft Pilot Licence
Laplace Name given to chief class of integral transforms,
to elliptic partial differential equation and basic
theorem on probabilities.
lap pack Parachute pack carried on seated wearer’s lap.
Laps Local analysis and prediction system.
laps Flaws in surface of steel castings.
lapse rate Rate of reduction of temperature with height
in atmosphere (see dry adiabatic **, wet adiabatic **).
LAPSS Laser airborne photographic scanning system.
lap strap Primitive seat harness with single belt across
lap, almost universl in civil transport aircraft.
LAR Live-animals requirements (IATA).
LARA 1 Light armed reconnaissance aircraft.
2 Low-altitude radar altimeter.
LARC Low-altitude ride control (Softride); system for
reducing vertical acceleration on crew compartment in
high-speed flight through gusts.
LaRC Langley Research Center, [Hampton, VA, from
1920] (NASA).
large aircraft Over 12,500 lb (5,670 kg) MTOW (US).
large bird Mass 4 lb, 1.8 kg.
large-scale integration Typically c1,000 circuits, gates or
logic functions on each chip; accepted upper limit is
16 kbit, above which is VLSI.
large space structure Assembly of beams and girders
having overall dimensions in range of hundreds of metres,
posing unique problems of vibration and attitude control.
LARH Light armed reconnaissance helicopter (USA).
Larmor precession Motion of charged particle attracted
to fixed point in overall weak magnetic field.
LARS 1 Lower-airspace radar advisory service (UK
NATS).
2 Large-amplitude resonance simulator.
LAS 1 Large astronomical satellite.
2 Lower airspace service.
3 Licensing administration and standardization.
4 Launch abort system.
Las Landing aid system (Boeing).
Lasar Light assault/attack reconfigurable.
LASC Lead-angle steering command (air-to-air HUD
mode).
Lascom Laser communication (system).
Lascr Light-activated silicon-controlled rectifier.
LASE Lidar atmospheric sensing experiment.
laser Any of many families of device for emitting
coherent light (visible or outside visual spectrum); from
light amplification by stimulated emission of radiation.
laser altimeter Measures time for laser pulse to return
from ground directly beneath aircraft.
laser centreline localizer Amber on centreline, red or
green, ultimately flashing, L or R.
LATCC
laser cladding Use of laser to deposit layer of [usually
exotic] material.
Lasercom Laser communications.
laser gyro Any system, usually triangular, which senses
rotation by measuring frequency shift of laser light
trapped in closed circuit in horizontal plane.
laser inertial reference system IRS using laser gyro(s).
laser intelligence An emerging technology involving
analysis of hostile laser emissions.
laser ranging Radar technique but using laser to illuminate
target, range being function of time of return journey
to target.
laser reference system Gives attitude/heading, more
precise than AHRS.
laser shock peening Rapidly repeated firing of highpower
laser to cover surface of metal part to increase
resistance to crack propagation [the laser fires through a
film of water which sends a shockwave into the material].
laser trimming Use of laser mounted on travelling
microscope to cut metal from specific sites in microelectronic
circuit or device.
laser welding Uses high-power (usually CO 2 ) laser for
micro-precision welding; technique related to EBW.
LASH, Lash Littoral airborne sensor hyperspectral,
senses anomalies in light patterns to “see” through foliage
or water.
LASI Large aircraft survivability initiative (AMC5).
Lasint Laser intelligence.
LASL Los Alamos Scientific Laboratory, centre of
nuclear weapon and nuclear rocket research (University
of New Mexico).
LASM Land-attack Standard Missile.
Lasors Licensing, administration and standardization,
operating requirements and safety (CAA).
Lasos Lasers and space optical systems.
LASP Large aircraft security program [October 2008]
(TSA).
Laspac Landing-gear avionics systems package.
LASR Low-altitude surveillance radar.
Lass 1 Low-altitude surveillance system.
2 Lightweight armament support system [helicopter].
Lassi Laser air speed sensor instrument.
Lassie, LASSIE Low airspeed sensing and indicating
equipment (helicopter and V/STOL).
Lasso Large-aperture space surveillance (optical)
(Darpa).
last, LAST 1 Low-altitude supersonic target.
2 Light-appliqué armour systems technology.
last-chance area Parking spot near military runway for
final check of armament status, seat pins, etc.
last-chance filter or screen Final point for removal of
foreign particles before oil [rarely, fuel] enters engine.
Laste Low-altitude safety and target enhancement.
last form Large-scale tooling for rapid manufacturing
(acronym).
LASW Littoral ASW; FNC adds future naval capabilities
(US).
Lat, lat Latitude.
Latar Laser-augmented target acquisition and recognition.
Latas Laser TAS system.
LATCC London Air Traffic Control Centre (West
Drayton, UK).
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