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arresting hook, arrester hook
area to halt arriving aircraft within specified distance.
Many systems qualified for use on aircraft carriers, rough
battlefield airstrips (in this case, mainly by light STOL
machines) and major military runways. In nearly all cases
involves one or more transverse cables traversed by hook
on arriving aircraft. Kinetic energy of aircraft dissipated
by cable pulling pistons through hydraulic cylinders or
rotary brakes, driving fan through step-up gears or towing
heavy free chains.
arresting hook, arrester hook Strong hook hinged to
some land-based and most carrier-based aeroplanes for
engagement of arresting gear; usually released by pilot
from flight position to free-fall or be hinged under power
to Engage position.
arresting unit Energy-absorbing device on one, or
usually both, ends of arrester wire.
ARRGp Aerospace Rescue and Recovery Group
(USAF).
arrival 1 In flight planning, calculated time when
destination should be reached (see ETA); may be determined
by plotting straight line from last waypoint to
overhead destination, but professional pilots refine this to
take account of approach procedures.
2 Inbound unit of traffic (ie one aircraft approaching
destination airfield).
3 Colloq., derogatory description of a particular
landing.
arrival runway At major airfield, runway currently being
used only by arrivals (2).
arrival stall Caused by attempting to line up on landing
approach by rudder alone, without bank, causing inner
wing to stall. Trying to recover by aileron aggravates situation.
arrival time Time at which inbound aircraft touches
down (BS, FAA); airlines sometimes use different definitions,
esp. time at which first door opened.
ARRM Affordable rapid-response missile [D adds
demonstrator].
ARROW 1 Aircraft routing right of way (not spoken as
word) (US).
2 Checklist for documents carried: Airworthiness,
Registration, Radio license, Operational limitations,
Weight/balance. Suffix-C adds Charts [outside local area].
arrow engine piston engine having three, or multiples of
three, cylinders arranged with one (or one row) vertical
and others equally inclined on either side. Also called
broad-arrow or W (if inverted, M or inverted-arrow).
arrow stability Weathercock stability stemming from
simple distribution of mass and side areas.
arrow wing 1 Markedly swept wing; in his Wright
Brothers lecture in 1946 von Kármán used ** exclusively,
and ‘swept wing’ did not become universal until 1948.
2 Modern meaning is wing with inboard section [with
subtly curved profile] with LE sweep close to 80° and
outer panels of more conventional form, eg sweep
30°–50°.
ARRS Aerospace Rescue & Recovery Service (USAF).
ARRW Aerospace Rescue & Recovery Wing (USAF).
ARS 1 Special air report (written).
2 Atmosphere revitalisation subsystem.
3 Auto-relight system.
4 Attack radar set.
5 Air Rescue Service (from 1996 ARRS).
6 American Rocket Society (became AIAA in 1962).
artificial feel
7 Attitude retention system (XV-15 FCS).
8 Automated retrieve system.
9 Aeroplane Repair Shop (RAF 1918–45).
10 Automated radar summary, charts issued hourly
showing local echoes.
11 Active ranging system [airborne laser].
12 Air control centre. Recognised air picture production
centre, Sensor fusion post [ACCS] (NATO).
13 Active radar seeker.
ARSA 1 Airport radar service area (in US reclassified
1993 as Class C airspace).
2 Apron, or advisable, radar service area.
3 Aeronautical Repair Station Association [office,
Alexandria, VA22314-2903] (US).
ARSAG, Arsag Aerial Refueling Systems Advisory
Group (US).
Arsips Aerial refuelling store integrated power system
[RAT1].
Arsis Aircraft rotation, scheduling and information
system.
ARSR Air-route surveillance radar, ARTCC radar to
detect and display aircraft en route between TMAs.
ART 1 Actuator remote terminal.
2 Air Reserve Technician (Afres).
3 Airborne-radar technician.
4 Adaptive-resonance theory.
5 Auto reserve thrust.
Artac The Alliance of Independent Travel Agents (UK,
office Malborne, Peterborough).
Artads Army tactical data system (USA).
Artas, ARTAS Air-traffic control radar tracker and
server.
ARTCC Air-route traffic control center (FAA).
ARTCS Advanced radar traffic control system (FAA).
ARTD Applied research technology demonstrator.
Artes Advanced research in telecommunications
(CNES, ESA).
ARTF 1 Alkali-removable temporary finish.
2 Aircraft Recovery and Transportation Flight (RAF
and USAF).
Arthur Any AFCS (F, colloq.).
ARTI, Arti Advanced rotorcraft technology integration.
article Generalised term for one aircraft, especially one
operated by the CIA.
articulated blade In rotorplane, rotor blade connected to
hub through one or more hinges or pivots.
articulated rod In radial piston engine, any connecting
rod pivoted to piston at one end and master rod at other.
artificial ageing Ageing of alloy at other than room
temperature, esp. at elevated temperature.
artificial feel In aircraft control system, esp. AFCS,
forces generated within system and fed to cockpit controls
to oppose pilot demand. In fully powered system there
would otherwise be no feedback and no “feel” of how
hard any surface was working. Simulates ideal response
while giving true picture of surface moments insofar as
response curve of each surface and their harmonisation
are concerned. System invariably strongly influenced by
dynamic pressure q. Generates force for each surface
according to optimised law [not necessarily same for all
axes] and prevents pilot from damaging aircraft by
primary control (but rarely takes into account rapid
trimmer movements).
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