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slow-CAP
slow-CAP Combat air patrol to protect slow-flying
aircraft.
slow roll Precision flight manoeuvre in which aircraft,
usually fixed-wing, is rolled through 360° by ailerons
(using rudder as necessary) while keeping longitudinal
axis sensibly constant on original heading; unlike barrel
roll imparts -1 g in inverted attitude. Can be performed
with longitudinal axis at any inclination in vertical plane.
In US called aileron roll.
slow-running cut-out Pilot-operated valve which stops
piston engine by turning off supply of metered fuel (carburettor
engine only).
slow-running jet Fine carburettor jet which alone
supplies fuel to piston engine mixture when throttle is at
idling position.
SLP 1 Space-limited payload.
2 Survivor-locator package (USAF).
3 Sequential linear programming.
4 Slope; SLPG sloping.
5 Sea-level pressure.
6 Speed-limiting point on procedural chart.
SLR 1 Side-, or sideways-, looking radar.
2 Slush on runway.
3 Standard lapse rate.
SLRR Side-looking reconnaissance radar.
SLRS Space lift range system.
SLS 1 Side-lobe suppression.
2 Sea-level static [or standard].
3 Self-launching sailplane.
4 Strained-layer superlattice.
5 Satellite landing system.
SLSAR Side-looking synthetic-aperture radar.
SLSL Space Life Science Laboratory (KSC, 2003–).
SLST Sea-level static thrust.
SLS-TO Sea-level static, takeoff.
SLT 1 Sleet.
2 Squadron- level trainer.
SLTA Small laser transmitter assembly.
SLTO Sea-level takeoff.
SLU 1 Surface-launched unit.
2 Stabilized laser unit.
3 Switching logic unit.
SLUC System-level use case.
sludge Viscous slimy deposit gradually formed in lubricating
oil by oxidation, water contamination and other
reactions.
sludge chamber Cavity, tube or other region in crankshaft
web or crankpin, supercharger drive gear or other
rotary component in which sludge is deliberately trapped
by centrifugal force.
SLUFAE Surface-launched unit fuel/air explosive.
slug 1 Non-SI (UK only) unit of mass = g lbf =14.5939
kg.
2 Pre-rivet forming feedstock for Drivmatic or similar
riveting machine.
3 Ferritic cylinder for varying coil permeability or
inductance.
4 Metal or dielectric cylinder for waveguide impedance
transforming.
5 Slab of alloy from which SFF warhead is formed.
6 Body of water or other contaminant in tank of fuel or
other liquid.
slugging Malfunction in vapour-cycle ECS in which the
compressor pumps liquid refrigerant.
small light aeroplane
slung load Payload carried below helicopter on single
cable. Class A, does not extend below landing gear, is
fixed and cannot be jettisoned; Class B is jesttisonable;
Class C remains touching land or water.
Slurs Shoulder-launched unmanned reconnaissance
system.
slurry Suspension of finely divided solid particles in
liquid, usually capable of being pumped; physical form of
experimental fuels, particles often being metal.
slush Mixture of snow and water with SG 0.5 to 0.8;
below these values is called wet snow, above is called
standing water.
slush fund Money allocated for bribery, usually of
persons able to influence potential customers.
slush hydrogen High-energy H 2 slurry, typically with 116
per cent density of LH 2 , in some forms gelatinous and in
others a pumpable mix of solid, liquid and gas.
SLV 1 Satellite, or small, launch vehicle.
2 Space-launched vehicle.
3 Synchronization lock valve.
4 Service-level verifier.
SLW 1 Short-lift wet [T adds thrust].
2 Supercooled liquid water [C adds content].
3 Slow.
SM 1 Statute mile (often s.m. or mile).
2 Static margin.
3 Service, or simulation, module.
4 Sandwich moulding.
5 Strategic missile (former DoD designation prefix).
6 Standard missile (USN).
7 Special mission (US).
8 Standards manual.
9 Stockpile memo (NW).
10 Smoke.
11 Signature, or stealth, management.
sm, s.m. 1 Statute mile[s].
2 Short emission.
SMA 1 Squadron maintenance area.
2 Stato Maggiore Aeronautica (I).
3 Surplus military aircraft.
4 Shape-memory alloy.
5 Surface-movement advisor (ATC).
6 Signal message address.
7 Service de la Maintenance Aéronautique, part of
DGA (F).
8 Sensory motor apparatus.
SMAC Scene-matching area-correlator.
SMAAC Structural maintenance of ageing aircraft
(EU).
SMAE The Society of Model Aeronautical Engineers
[1922–, office, Leicester] (UK).
small aircraft 1 One of below 12,500 lb (5,670 kg)
MTOW (US).
2 Between 17 and 40 tonnes MTOW (UK wake
turbulence).
small arms All arms up to and including 0.6 in (15.24
mm) calibre (DoD). Despite ‘all arms’, term normally
means guns.
small business One with fewer than 500 employees.
small circle That described on spherical or spheroidal
surface by intersection of plane not passing through
body’s centre.
small end End of connecting rod pin-jointed to piston.
small light aeroplane Two groups seek definition.
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