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psig, PSIG
psig, PSIG Pounds per square inch, gauge.
PSK 1 Phase [rarely, pulse] shift keying; differentially
used in satcom terminals.
2 Prospect[s].
PSL 1 Polystyrene latex.
2 Problem statement language.
3 Physical Science Laboratory (NM State Univ.).
PSLO Product-support logistic operation.
PSLV Polar-satellite launch vehicle.
PSM 1 Passenger statute-mile.
2 Post-stall manoeuvring, or mode.
3 Personal safety monitor.
4 Power-system, or supply, module.
PSMC Preselected manual control.
Psmc GPS packet-mode channel for system management
and control. Continuously broadcast by each
satellite to inform system configuration and status, plus
time and frequency information needed by an AES
seeking to log on.
PSMK Personal-sensor moding key.
PSN 1 Potassium/sodium niobate.
2 Position.
3 Packet switch[ed] network.
PSO 1 Pilot systems officer, GIB in dual-control
combat aircraft (USAF).
2 Protective service operations (mission).
3 Peace support operations.
4 Program[me] support office.
5 Public-service obligation [air carriers].
6 Passenger Shipping Organization (UK).
PSOM Polar strap-on motors.
psophometer Instrument which attempts to measure
perceived noise level.
PSP 1 Pierced steel planking.
2 Programmable signal processor [see 8].
3 Personal (or personnel) survival pack.
4 Product support programme.
5 Primary special pay (DoD).
6 Pressure-sensitive paint.
7 Production software package.
8 Presignal processor [AI radar].
PSPL Preferred standard parts list.
PSR 1 Primary surveillance radar.
2 Precision secondary radar.
3 Pulsar.
4 Post-strike reconnaissance.
5 Packed snow on runway.
6 Point of safe return.
7 Parts status report.
8 Passive surface resonance.
PSRE Propulsion-system rocket engine.
PSRU Piston-engine propeller-speed-reducing unit (=
gearbox).
PSS 1 Precision slab synchro.
2 Proximity sensor system.
3 Primary [flight-control] surface servo.
4 Product-support services.
5 Payload specialist station.
6 Passive surveillance system.
PSSA 1 Pilot-stick sensor assembly.
2 Preliminary system safety analysis.
P ssk SSKP.
PSSPO Precision Strike Systems Project Office
(USAF).
PTC
PSSSU Power supply and system selector unit.
PS stall Part-span [usually of axial compressor].
PST 1 Pacific Standard Time.
2 Propeller STOL transport.
3 Lead scandium tantalate.
4 Pad service tower.
PSTB Propulsion-system testbed.
PSTN Public switched telephone network.
PSTS 1 Public switched telephone service.
2 Precision Sigint tracking system.
3 Propulsion-system test stand.
PSU 1 Photosmoke unit (not same as Hartridge).
2 Power supply, or switching, unit (electronic).
3 Passenger service unit.
4 Program-setting unit (IRCM).
PSV Public service vehicle.
psychological warfare Planned use of propaganda and
other psychological actions having primary purpose of
influencing opinions, emotions, attitudes and behaviour
of hostile foreign groups (DoD); (NATO substitutes for
‘hostile foreign’ ‘enemy, neutral or friendly’).
psychrometer Instrument for measuring atmospheric
humidity, usually comprising dry and wet-bulb thermometers.
psyops Psychological operations, psywar plus political,
military, economic and ideological ops.
psywar See psychological warfare.
PSZ 1 Ceramic, mix of tetragonal zirconia in cubic
zirconia.
2 Public safety zone.
PT 1 Power turbine.
2 Primary trainer (USA, USAS, USAAC, 1925–47).
3 Public transport.
4 Pesawat Terbang [company constitution, Indonesia].
5 Procedure turn.
6 Point.
Pt Platinum.
P t 1 Rocket chamber pressure at termination (solid
propellant).
2 Total pressure.
3 Pitot pressure, dynamic pressure.
4 Radar power transmitted.
5 Pennant number.
6 Load on a tension member.
pt Pint.
p t Tensile stress.
P t2 etc Gas-turbine total pressures at usual numbered
locations, ending with P t7 for nozzle exit.
PTA 1 Prepaid ticket advice in foreign currency.
2 Polskie Towarzystwo Astronautyczne (Poland).
3 Propfan test assessment.
4 Pilotless target aircraft.
5 Part-throttle afterburning (see part-throttle reheat).
6 Practice target area.
PTAB Small hollow-charge anti-armour bomblet,
usually followed by figure giving weight in kg (USSR, R).
PTAG Portable tactical aircraft guidance.
PTAN Precision terrain-aided navigation.
PTAS Pilotless target aircraft squadron.
PTB 1 External tank, or drop tank (USSR, R).
2 Patrol torpedo-bomber (USN 1937).
PTC 1 Programming & test centre.
2 Part-through crack.
3 Pitch trim compensator.
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