1Dk4eXg

long-range
delays in delivery (heavy forging may be years),
processing time at sub-contractor or in plant, and time
from when finished part joins aircraft to completion of
aircraft.
long-range No valid modern definition except DoD *
bomber operational radius over 2,500 nm.
long-range operations Philosophy possible with modern
aircraft, where reliability is near-perfect. It ignores
number of engines, and aims to achieve autonomous
operation, with crew [two pilots] able to correct any fault
or mishap.
long-wave 1 In the case of radio/radar, usually means
wavelength over 1 km, but not a normal aerospace term.
2 In the case of IR, wavelength 8–14 µ.
Lons, LONS Local on-line network system.
look angle Angular limits of vision of EO or IR seeker.
look-down angle Limiting inclination of main beam in
AWACS-type aircraft, strongly dependent on aerial
[antenna] geometry.
look-down shoot-down Ability to destroy low-level
hostile aircraft from high altitude against land or clutter
background.
loom Tightly laced bundle of electric cables, instrumentation
leads or other flexible wires.
loop Flight manoeuvre in which aircraft rotates noseup
through 360° whilst keeping lateral axis horizontal;
many variations but normal loop restores level flight on
original heading but at slightly higher altitude. See
inverted *, outside *, bunt.
loop aerial Conductive coil in vertical plane rotating
about vertical axis to give bearing to ground radio station;
a D/F loop [US = loop antenna].
loop detector Conductive loop buried in runway or
taxiway to sense passage of aircraft and activate a display
or airfield lights.
loop heat pipe In spacecraft, keeps vapour and cooled
liquid separate by circulation through porous wick.
Loose Deuce Pair of tactical aircraft in varying loose
formation c300 m (1,000 ft) apart.
LOP 1 Line of position [or positioning].
2 Loss of power.
LOPC 1 Lander operations planning center.
2 Loss-of-power control.
lopro Low probe; military aircraft mission.
LOR 1 Lunar orbital rendezvous.
2 Launch off RWR target data.
Lora, LORA 1 Level of repair analysis.
2 Low-frequency radar.
Loraas Long-range airborne ASW system.
Lorac Long-range accuracy, also called Loran-C or
Cytac; Loran derivative.
Lorads Long-range radar and display system [now
Lorads II].
Lorag Loads research advisory group.
Loran Long-range navigation, early [1941] but much
developed hyperbolic navaid, using various onboard
systems to translate time difference of reception of pulsetype
transmissions from two or more fixed ground
stations. In 1980 Loran-A [1,850/1,900/1,950 kHz] was
replaced by Loran-C [100–110 kHz].
LORAS, Loras Linear omnidirectional resolving
airspeed system.
Lord, LORD Laser obstacle ranging and display, for
helicopters.
low approach
Lord mount Large family of patented anti-vibration
mounts, usually metal/rubber.
Lorentz force, FL That on charged particle moving in
magnetic field, = q(VB) where q is particle charge, V
velocity and B magnetic induction (flux density).
Lorentz system Pioneer beam-approach landing system.
Lores, LORES Low-resolution.
LORO Lobe-on receive only.
Loroc 1 Long-range optical camera.
2 Long-range offboard chaff.
Lorop Long-range oblique [or optical] photography [S
adds system].
Lorv Low-observable re-entry vehicle, characterized by
reduced radar cross-section.
LOS 1 Line of sight; I adds indicator.
2 Loss of signal.
3 Linear optical sensor.
4 Line-oriented simulation.
5 Level of service.
LOSA Line Oriented, or Operations, Safety Audit (U.
of Texas).
losas Low-cost Scout acoustic system.
Losat Line of sight, anti-tank.
LOSC Launch operations support contract.
Loschmidt number Number of molecules of ideal gas per
unit volume, = 2.687 × 10 19 per cm 3 .
Loss Large-object salvage system.
lost-wax Technique for casting intricate precision
shapes, derived from Benvenuto Cellini c1550 but modified
for modern refractory alloys. See investment casting.
LOT Life of type [E adds extension].
lot A particular meaning is one batch of production
missiles.
LOTA Low-level training area.
Lotaws Laser obstacle terrain-avoidance warning
system.
LOTC Loss-of-thrust control.
LOTE, Lotex Life-of-type extension.
LO 2 Liquid oxygen.
lounge Waiting area at airport for departure passengers
between processing and gates.
louvre Fixed or controllable aperture for cooling or
ventilating airflow.
LOV Loss of vision due to opaque frames and other
obstructions.
Lova Low-vulnerability ammunition.
LOW Launch on warning.
low Geographical region of low atmospheric pressure.
low airburst Fallout safe height of NW burst for
maximum effect on surface target.
low altitude US military traditional, 500/2,000 ft; today
see lo (1).
low-altitude airway