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ASO
assembly
ASO 1 Air-support operations, see ASOC.
ASPO 1 Army Space Program Office (USA).
2 Acoustic-systems, or sensor, operator.
2 Avionics Systems Project Officer (USAF).
ASOC 1 Air-Support Operations Centre (RAF), 3 Aviation Strategic Planning Organization
Center (GTACS).
(Australia).
2 Air Sovereignty Operations Centre.
ASPP Airfield [originally aeronautical fixed] Service
Asops Airport-security operational process simulation. Planning Panel (ICAO).
ASOS Automated surface observation, or observing, ASPR Armed Services Procurement Regulations (US).
system; at uncontrolled airfields gives voice readout of Aspro Airborne associative [from “advanced signal”]
useful data.
processor.
ASP 1 Armament status panel.
ASPS 1 Airborne self-protection system.
2 Aircraft servicing platform [or pan].
2 Advanced self-protection suite.
3 Automated small-batch production.
ASPSS Aircraft self-protection security system.
4 Audio selector panel.
ASQC American Society for Quality Control.
5 Airbase survivability program (US).
ASQF Assurance-specific qualification facility, alternative
form of PACF for Satnavs (ICAO).
6 Adaptive, or advanced, or aircraft, or airborne,
signal processing, or processor.
ASRAAM, Asraam Advanced short-range AAM.
7 Aircrew services package.
ASR 1 Air/sea rescue [see ASR apparatus].
8 Application service provider.
2 Aerodrome, airfield, airport, or approach, surveillance
radar.
9 Altimeter setting panel.
10 Airborne surveillance platform.
3 Air Staff Requirement (UK).
11 Airfield[s] systems planning (ICAO).
4 Altimeter setting region.
12 Arrival sequencing program.
5 Automatic send/receive.
13 Aircraft systems processor.
6 Acceleration, or accelerating, slip reduction.
14 Antenna scan[ning] period.
7 Air Safety Report, of hazardous event.
15 AFS(1) planning.
8 Alternate system[s] review (USAF).
16 Airspace policy.
Asrad Advanced short-range air defence.
17 Accelerated share purchase.
ASR apparatus Term for that dropped to survivor(s),
ASPA Asociación Sindical de Pilotos Aviadores
including 3 canisters containing dinghy, food, radio etc.
(Mexico).
ASRC Alabama Space and Rocket Center, Huntsville.
Asparcs Air-surveillance and precision-approach radar
ASRgn Altimeter setting region.
control system (USMC).
ASRM Advanced solid rocket motor (NASA).
ASPC See CSPA.
ASPCU Aur supply/pressurization control unit.
Asroc Anti-submarine rocket.
ASPE Speed of sound in EDP.
ASRP Aviation Safety Reporting Program
aspect change Changing appearance or signature of
(FAA/NASA, from 1976).
reflective target as seen by radar, caused by attitude
ASRS 1 Aviation safety [&] reporting system (NASA,
changes.
1975–).
aspect ratio General measure of slenderness of aerofoil 2 or AS/RS Automatic storage/retrieval system.
in plan. For constant-section rectangular surface, numerical
ratio of span divided by chord, discounting effects due 2 Autonomous scout rotorcraft testbed (DoD).
ASRT 1 Air support radar team.
to presence of body or other parts of aircraft. For most ASRTE Avion station relais de transmissions exceptionelles,
also redered Astarte (F).
wings ** A is defined as b 2 /S, where b is span measured
from tip to tip perpendicular to longitudinal axis (slew or ASRWSP Airport surveillance radar with weather
VG wing as nearly as possible transverse) and S is gross systems processor.
area. Structural ** A S generally defined as b 2 sec 2 Λ or ASS 1 Attitude-sensing system.
––––
A
2 Airlock support subsystem.
Λ, where Λ is ¼-chord sweep angle. Confusingly, A
cos 2 s
is now losing ground to R A. Effective or
3 Air Signallers’ School (RAF).
4 Anti-shelter submunition.
5 Aviation support ship.
6 Atmospheric sounding system.
equivalent ** increased by fitting end-plates (eg horizontal
tail surface on top of fin), but there is no universally
applicable formula. Optimum ** usually means that
giving minimum wing weight, but this is seldom the best
overall. Generally, faster aircraft have lower **; shorter
field length demands higher **. Sailplanes and manpowered
aircraft need extremely high **, from 20 to 40.
Aspen Aerospace planning and execution network
(USAF).
Asph Asphalt.
Aspire 1 Advanced supersonic propulsion integration
and research (NASA).
2 Asia and South Pacific initiative to reduce emissions.
Aspis Advanced self-protection integrated suite.
ASPJ Advanced, or airborne, self-protection jamming,
or jammer.
ASSA 1 Aeronautical Society of South Africa, more
usually in Afrikaans: LKV.
2 Aviation system of systems architecture (US).
ASSAD, Assad Union of aviation-engine producers
(R, CIS).
assault aircraft Aeroplanes and/or helicopters which
convey assault troops to their objective and provide for
their resupply.
assembly 1 Completed subsystem, portion of airframe
or other part of larger whole which itself is assembled
from smaller pieces.
2 Process of putting together parts of functioning item
of equipment, engine, subsystem, portion of airframe or
other aerospace hardware (other than complete aircraft,
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