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Safeway
Safeway Proprietary deicers: * SD is a solid, * KA
liquid.
Safeway Pneutronic Guidance installation for nose-in
parking; pavement pressure pads sense nosewheel(s) and
illuminate progress lights facing flight deck while arrows,
lights and other displays give guidance.
Saffire Synthetic-aperture fully focused imaging radar
equipment.
SAFI Semi-automatic flight inspection (FAA, from
1962); S adds system, = Safis.
safing Process of rendering potentially dangerous device
or system inoperative; eg complex procedure in Space
Shuttle Orbiter post-landing.
Safire Scanning airborne filter radiometer.
SAFO Safety alert for operators (FAA).
Safoc Semi-automatic flight operations centre.
SAF/OI Secretary of the Air Force/Office of
Information (USAF).
SAFP Slotted-array flat plate; A adds antenna.
SAF/PA As above, Public Affairs.
SAFR Schweizerische Arbeitsgemeinschaft für Raumfahrt
(previously Raketentechnik) (Switzerland).
SAFU Safety, arming and fuzing (sometimes functioning)
unit.
SAG 1 Support air group (Royal Navy).
2 Scientific advisory group (US).
3 Surface action group (USN, concerned with ship
targets).
4 Survivability analysis group (DoD).
5 Semi-active guidance.
sag See sagging.
SAGA 1 Studies Analysis and Gaming Agency (DoD).
2 System of azimuth guidance for approach; simple
optical ILS.
3 Statistics of accidents in General Aviation.
SAGE, Sage 1 Semi-Automatic Ground Environment;
pioneer computer-controlled radar and communications
system for defence of large airspace and management of
interceptors and SAMs. [1953–63] (US).
2 Stratospheric aerosol and gas experiment.
3 System for assessing aviation’s global emissions
(FAA).
sagging 1 Distortion of airship (any kind) caused by
upward loads near ends or lack of lift at centre.
2 Bending stress on seaplane float or flying-boat hull
caused by water support concentrated near ends due to
swell or waves.
SAGr Maritime reconnaissance group (G. WW2).
Sags Semi-active gravity-gradient stabilization.
SAGW Surface-to-air guided weapon (UK usage).
SAH 1 Semi-active homing.
2 Sample and hold (EDP [1]).
3 Select and hold.
4 School of Aircraft Handling.
SAHA Shoreham Airport Historical Association (UK).
SAHIS, Sahis Standby attitude, heading and rate of
turn indicating system.
SAHR Semi-active homing radar (SAHRG adds
‘guidance’).
SAHRS Standby, or standard, or secondary, or supplemenatary,
attitude/heading reference system.
SAI 1 Standby airspeed indicator.
2 Spherical attitude indicator.
3 Single-aperture interferometer [or interferometry].
Salisbury screen
4 System architecture and interface.
SAIA Swedish Aerospace Industries Association.
SAIAE South African Institute of Aeronautical
Engineers [office, Johannesburg].
SAIF Standard avionics integrated fuzing (sets
dispenser payload fuzes milliseconds before release).
SAIG 1 Single-axis integrated gyro.
2 Swiss Aeronautical Industries Group [22 companies]
(January 2005–).
SAIL Shuttle-Avionics Integration Laboratories.
sail 1 Flat surface pointed towards Sun or other celestial
object and attached to spacecraft, eg carrying solar cells.
2 Very large lightweight reflective surface proposed for
space propulsion by pressure of sunlight. Potential for
6×10 5 km/h (380,000 mph).
3 To navigate seaplane (see sailing [2]).
4 Projecting structure above hull of submarine; also
called fin, bridgefin or, formerly, conning tower.
5 (Usually plural) Small winglets arranged at different
angles around wingtip, typically four disposed from front
to rear.
6 Loosely and ambiguously, any winglet.
7 Recent usage, upper or lower surface of fabriccovered
rigid wing, thus upper-*, lower-*.
sailing 1 Undesired rotation of helicopter rotors or
aeroplane propeller in high wind.
2 Navigation of seaplane on water, esp. in conditions of
wind and current.
sailplane Glider designed for soaring.
sails See sail (5).
sailwing Aerodyne whose wing assumes lifting (nearaerofoil)
profile only in presence of suitable relative wind;
class includes parawings but normally has flexible
surface(s) restrained by rigid periphery.
Saint 1 Surveillance, acquisition, identification,
notification and tracking.
2 Satellite inspection technique.
3 Satellite active imagery [or imaging] national testbed.
Saint Elmo’s fire Brush discharge caused by build-up of
electrostatic potential, notably on propeller blades;
luminous and often audible.
Saint-Venant’s principle In any two-dimensional region
the stresses and strains produced at a point remote from
a series of applied loads do not differ significantly from
those resulting from any other set of loads having the
same resultant force and moment.
SAIP Semi-automated imagery [or Imint] processing
[or processor].
SAIRS, Sairs Standardized advanced IR sender [or
system] (Martin Marietta).
SAIRST Situational awareness IR search and track.
SAKh Written CAX, mean aerodynamic chord (R).
SAL 1 Strategic arms limitation.
2 Security access level.
3 Selected altitude layer decoder.
4 Semi-active laser.
Salbei See SV-stoff.
SALC Sacramento Air Logistics Center (McLellan
AFB).
Salis Strategic airpower interim solution.
Salisbury screen Oldest and simplest RAM (2),
comprising resonant absorber created by placing resistive
sheet on spacer of low dielectric constant in front of metal
plate (eg aircraft skin).
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