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MPDI
2 Maximum permitted dose (radiation).
3 Maintenance planning document.
4 Multi-purpose display.
5 Mobile packet data (Satcoms); S adds service.
6 Mandatory Permit Directive (CAA).
MPDI Multi-purpose display indicator (see MDRI).
MPDM Multi-purpose dextrous manipulator.
MPDR Monopulse Doppler radar.
MPDS 1 Missile-penetrating discarding sabot.
2 Multi-purpose display system.
3 Maintenance-planning data support.
4 Message processing and distribution system.
5 See MPD (5).
MPE 1 Mass-properties engineering.
2 Mission-planning element.
MPED Multi-purpose electronic display.
MPEL Maximum permissible exposure level.
MPEO Mineral piston-engine oil.
MPESS Multipurpose experiment support structure
[space-payload pallet].
MPET Metallized polyethylene terephthalate.
MPFF Multi-purpose fighter facility.
MP Flt Mission-planning Flight (RAF).
MPG 1 Or m.p.g., miles per gallon, rare in aviation.
2 Moulded propellant gain.
MPGS Mission-planning ground station.
mph Statute miles per hour, see mile for conversions.
MPHD Multi-purpose head-down.
MPHT Missile potential hazard team.
MPI 1 Mission and Payload-Integration office (NASA).
2 Magnetic-particle inspection.
3 Mean point of impact.
4 Multiprotocol interface.
5 Major periodic inspection.
6 Moving plan indicator.
mpig Miles per Imperial gallon (not recommended).
mPk Maritime polar, colder than surface.
MPL 1 Multi-programming level.
2 Mid-Pacific landing (NASA).
3 Mars polar lander.
4 Multi-pilot, or multiple-crew pilot, licence [ICAO-
JAR/FCL] (2006–).
5 Maximum probable loss.
MPLH Multi-purpose light helicopter.
MPLM 1 Multi-purpose logistics module.
2 Multi-purpose loitering missile.
MPM 1 Multi-purpose missile, or modem.
2 Microwave power module (radar xmtr).
MPMS 1 Maritime patrol-mission system.
2 Missile-performance monitoring system (inertial guidance).
MPNL Master parts-number list.
MPNVS Modernised pilot’s night-vision system.
MPO 1 Mission Planning Officer (RAF).
2 Main production order.
3 Mission-payload operator.
MPOA Multi-protocol over ATM.
MPP 1 Massively parallel processor.
2 Maintenance programme proposal.
3 Master program[me] plan.
4 Most probable point [of failure].
MPPA, mppa Million passengers per annum.
MPPM Microwave pulsed power module.
MPPS Multi-purpose pylon system.
MR
MPPU Multi-purpose processor unit.
MPR 1 MIL (military) power reserve.
2 Medium-power radar.
3 Microburst-prediction radar.
MPRD Metal produce and recovery depot.
MPRF Modulated, or medium, pulse-repetition
frequency.
MP-Rtip Multi-platform RTIP.
MPS 1 Mixed-propellant[s] system.
2 Main propulsion stage, or system.
3 Mid-platform ship (pad amidships).
4 Materials processing in space.
5 Mission-payload subsystem.
6 Multiple protective structure (ICBM).
7 Military postal system (US includes other services).
8 Minimum-payload subsystem.
9 Minimum-performance specification.
10 Mission-planning, or processing, system.
11 Maintenance processing system.
12 Maximum-pitch stop.
13 Motor/pump set.
14 Metres per second (ICAO, contrary to SI, which
dictates m/s).
15 Master phasing schedule of program[me].
16 Message processing system.
mps Metres per second (see 14 above).
MPSM Multi-purpose submunition.
MPSS Man-hours per ship-set.
MPT 1 Memory point track.
2 Multi-purpose tracer.
3 Missile procedure trainer.
MPt Melting point.
MPTA Main-propulsion test article.
MPTO Maximum-performance takeoff (helicopter).
MPU 1 Missile power unit.
2 Master processor unit.
3 Message pick-up.
4 Mission programming unit.
5 Multifunction process unit.
MPUAV Multipurpose UAV.
MPVI Memory, planes, video input.
MPVO Local air defence (USSR, R).
MPVT Multi-pulse vectored thrust.
MPVU Multi-plot variable update.
MPW 1 Mission-planning workstation.
2 Minimum pavement width (required for 180° turn).
mPw Maritime polar air, warmer than surface.
MPZ Matched pole-zero.
MQ US DoD role prefix, multirole UAV.
mq
— Pitching moment coefficient due to pitching.
MQAD Materials Quality Assurance Directorate (UK
MoD, now Qinetiq).
MQF Mobile quarantine facility.
MQLF Mobile quick-look facility.
MQP Moulded quality phenolic.
MQT Model qualification test.
MR 1 Maritime reconnaissance.
2 Medium-range.
3 Marker ranger (laser).
4 Military Region.
5 Machine-readable.
6 Magneto-resistive.
7 Mission rehearsal.
8 Memo for record.
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