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assembly drawing
buildings, docks, large launch complexes and similar
major structures, for which preferred term is erection).
assembly drawing Engineering drawing giving no information
on manufacture but necessary for correct
assembly; shows geometric relationships, assembly
sequence, necessary tooling (jigging), fits and tolerances,
and operations required during assembly.
assembly line Essentially linear arrangement of work
stations in manufacturing plant for assembly or erection
of finished product or major component (eg wing).
Modern aircraft produced in such small numbers
optimum erection-shop layout often not linear. High-rate
production (eg car engines or radio sets) parts travel on
belt or overhead conveyor from station to station (see
transfer machines).
ASSET Aero-Space Structure Environmental Test;
USAF research programme.
Asset Airborne sensor system for evaluation and test
(Northrop).
asset Item or group of items from a nation’s military
inventory, especially those serving front-line function.
ASSG Acoustic-sensor signal generator.
assigned amount In emissions legislation, the maximum
permitted.
Assist Affordable space systems intelligent synthesis
technology (USAF/NASA).
assisted takeoff, ATO Aerodyne takeoff with linear
acceleration augmented by accelerator, by self-propelled
trolley, by rockets attached to aircraft or by other means
not forming part of normal flight propulsion. Criterion is
use of external force; mere downward slope, giving
component of weight in takeoff direction, does not
qualify.
ASSM Anti-ship supersonic missile.
associated (VOR, Tacan) VOR and Tacan/DME facilities
either co-located or situated as closely as possible;
subject to maximum aerial (antenna) separation of 100 ft
in TMAs when used for approach or other purposes
requiring maximum accuracy, or 2,000 ft elsewhere.
associative processor Digital computer processor operating
wholly as ancillary to another, usually larger,
installation. Normally has no parent computer. Future
ATC computer installations may use powerful largememory
sequential machine to resolve conflicts and
exercise overall control, supplemented by ** working in
parallel seeking potential conflicts.
ASSR 1 Airport surface-surveillance radar.
2 Approach-control secondary surveillance radar.
3 Air-security screening records (TSA).
ASSRP Air and Space Scientific Research Program
(AFRL).
AS 3 , ASSS 1 Active-search sonobuoy system.
2 Airport surface-surveillance system.
ASST 1 Anti-ship surveillance and tracking, or
targeting.
2 Advanced supersonic transport.
ASSTC Aerospace Simulation and Systems-Test
Center.
assured destruction Concept of measurable inevitable
damage inflicted on enemy heartlands for purposes of
deterrence and arms limitation.
ASSV Alternate-source select[or] valve.
ASSW 1 Anti-surface-ship warfare.
2 Associated with (met. report).
Astra, ASTRA
AST 1 Advanced supersonic transport (or technology).
2 Advanced simulation technology.
3 Atmospheric surveillance technology.
4 Air Staff Target (UK).
5 Accelerated service test.
6 Airborne surveillance testbed.
7 Avionics system trainer.
8 Atlantic Standard Time.
9 Applied signal technology.
10 Air surveillance terminal.
ASTA 1 American Society of Travel Agents [office, NY
City].
2 Airport surface-traffic automation [S adds system]
(FAA).
3 Aircrew synthetic-training aid[s].
astable Not having a stable state.
Astamids Airborne standoff minefield-detection system
(passive IR).
AST&L American Society of Transportation and
Logistics [Lock Haven, PA 17745-1419] (US).
Astar Airborne search/track, or target, attack radar.
Astarte Avion station relais de transmissions exceptionelles
(F).
astatic Without specific orientation or direction.
ASTC Aviation Security Training Centre [B-1931
Zaventem] (Int.).
ASTE 1 Association pour le Développement des
Sciences et Techniques de l’Environnement (F).
2 Advanced strategic/tactical expendables [mainly IR
sources].
Astec 1 Automation system[s] for terminal and en-route
control.
2 Advanced small turbine-engine core.
3 Advanced strategic/tactical expendable[s] (IR decoy).
Aster Advanced spaceborne thermal emission and
reflection radiometer.
Asterix All-purpose structure Eurocontrol radar info.
exchange.
asteroid Minor planet, esp. fragments (mostly much less
than 50 miles across) orbiting between Mars and Jupiter;
thus, small body, such as artificial satellite, in solar orbit.
ASTF 1 Aeropropulsion Systems Test Facility (at
AEDC, commissioned September 1985).
2 Airspace system task force.
ASTI Airport surface-traffic indicator.
Astia Armed Services Technical Information Agency
(US).
ASTM American Society for Testing & Materials.
[West Conshohocken, PA19428] (US).
ASTO Arab Satellite Telecommunications
Organization (Int.).
ASTOL Alternate (alternative is meant) STOL.
Astor Airborne stand-off radar.
ASTOS, Astos The Association of Specialist Technical
Organisations [SMEs] for Space [office, Amersham HP6
6DZ] (UK).
Astovl, ASTOVL Advanced Stovl.
ASTP 1 Apollo-Soyuz Test Project (US, USSR).
2 Advanced Space Transportation Program (NASA).
ASTR Attack store; usually (and very confusingly)
means which type of AAM is selected, not air/ground
weapon.
Astra, ASTRA 1 Applications of Space Technology to
Requirements of Civil Aviation (ICAO panel); 1986
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