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pad abort
4 Network of resistances or impedances to couple to
transmission lines effectively.
pad abort Abort before launch from pad (1).
padder See padding capacitor.
padding capacitor In series with superhet. local-oscillator
tuning capacitor to match exactly to frequency.
paddle In a rate gyro, damping drag surfaces which
generate angular difference proportional to first-order
rate term.
paddle blade Propeller blade having unusually wide
chord maintained to tip.
paddleplane See cyclogiro.
paddle switch Ambiguously used to denote electrical
switches operated by dynamic air pressure, dynamic water
pressure in ditching and various other activation sources.
PADIS, Padis Procedures for analysing the design of
interactive solutions (fire-control software).
Padlocked “I have my vision fixed on bogies/bandits
and will not look away”.
PADM Persistant area-dominance munition.
pad output Power rating of shaft at each pad (3) location
on engine, APU or MEPU.
PADR Product-assurance design review.
PADS, Pads 1 Passive advanced sonobuoy.
2 Position and azimuth determining system.
3 Precision automatic dependent surveillance.
4 Precision airdrop system (MIT/USAF).
PADUS Principal Assistant Deputy Under-Secretary
(US).
PAF 1 Parabolic aircraft flight.
2 Police de l’Air et des Frontières (F).
3 Potassium acetate fluid (de-icer).
4 Portuguese air force [UK usage].
PAFAM, Pafam Performance and failure assessment
monitor (independent flight guidance with flight-deck
displays during autolanding).
PAFU Pilots’ advanced flying unit.
PAG 1 Programmable automatic gauge, for NC dimensional
checking.
2 Portable arrester gear.
3 Presidential Airlift Group (USAF).
Pageos Passive GEOS [Geodynamic experimental
ocean satellite(s)].
PAH 1 Anti-tank helicopter (G).
2 Polycyclic aromatic hydrocarbon.
3 Production approval holder (FAA).
PAI Parachute Association of Ireland Ltd.
Paid, PAID Parked-aircraft intrusion detector.
paint To create blip on radar display, esp. one giving
position of aircraft or other object.
paintless aircraft Instead of usual finishes, covered with
protective film of appliqué materials, saving weight, cost
and support requirements.
paint-on bag Flexible vacuum bag formed in place to
cover layup of composite material fabrication and seal
tool in prototype moulding of large parts.
paint-stripe loading Vertical stripes inside cargo aircraft
to assist loaders in achieving correct load distribution,
esp. with regard to c.g.
PAIR, Pair Precision-approach interferometer radar.
pair Section of two fighters operating together.
paired channels Selecting Vortac or ILS frequency automatically
also selects a DME.
PaK Anti-armour cannon (G).
palsar
PAK-FA Future air complex for tactical aviation,
loosely = next-generation fighter (R).
PAL 1 Passive augmenting (or augmentation) lens, eg
Luneberg.
2 Standard German TV/video system; from phase alternation,
or alternating, line.
3 Permissive action link.
4 Portable airfield lighting; S adds set.
5 Programmable array logic.
6 Propulseur d’appoint liquide (F).
7 Preprocessor assignment logic.
8 Peripheral station.
9 Protuberance air load.
PALC Point Arguello Launch Complex.
Palea Philippine Airlines Employees Association.
PALF Partly aloft (precipitation not reaching ground).
palisade Large hinged flight-deck barrier (RN carriers
1919–32).
palladium Pd, silvery malleable metal, density 12.0, MPt
1,552°C.
pallet 1 Standard platform for air freight, eg (Imperial
measures are still used) 88 in × 125 in, 88 in × 108 in and
96 in × 125 in.
2 Flat base, not necessarily of above dimensions, for
combining stores or carrying single item to form unit load,
in some cases retained as temporary or permanent base in
operation.
3 Standard-dimension base on which can be assembled
experiments, ancillaries and other payloads, eg for
Spacelab.
4 Standard-dimension base carrying work-pieces in
mechanized and automated manufacturing.
5 Configured (shape-matching) payload carrier for
attachment close against airframe exterior, eg fuel *
(FAST Pack).
pallet net Webbing or rope net for restraining a pallet or
igloo.
pallette Subsystems.
palletized bladder Flexible container for liquid mounted
on pallet (1) for airfreighting.
palletrolley Pallet (2) with wheels for ground transport,
eg for Sea Skua missile.
Palma Protection of aircraft against man-portable air
defence systems.
Palmachim On coast south of Tel Aviv, base for spaceflight,
IRBM, ABM (Israel).
Palmer scan Radar scanning technique in which conical
scan is superimposed on some other, eg Palmer-sector
(beam oscillates to and fro over azimuth sector while
continuously making small-angle conical scan), Palmerraster,
Palmer-circular etc.
palm tree Upward bomb burst (formation aerobatics).
Palnut Thin nut, usually pressed steel, screwed tightly
above ordinary nut to prevent loosening of latter.
PALPA Pakistan ALPA [Karachi].
PALS, Pals 1 Precision approach and landing system.
2 Precision approach light[ing] system; -1 adds with
sequenced approach Cat 1; -2 adds with red barrettes and
sequenced flashing lights in ILS Cat 2 configuration.
3 Portable airfield light set (USAF).
4 Positioning and locating system.
5 Performace-based agile logistics support.
palsar Phased-array L-band SAR.
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