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M R
9 Magnetic resonance.
10 Microwave receiver (Awacs).
11 Morning report (US usage).
12 Manual rectification.
13 Main rotor.
M R Aerodynamic moment about the reference point, e.g.
c.g., or wing c.p.
mR Milliroentgen[s]; also incorrectly used to mean milliradian[s].
MRA 1 Major replaceable assembly.
2 Maximum relight altitude.
3 Minimum reception altitude.
4 Miniature radar altimeter.
5 Maritime reconnaissance and attack.
MRAAM Medium-range air/air missile.
mRad Milliradian, = 3'6.25", just over 0.05°.
MRAF Marshal of the Royal Air Force.
MRAG Metallics Research Advisory Group (MRCC).
MRALS, Mrals Marine remote-area [and] landing
system, also rendered as MRAALS.
MRAM Magnetoresistive random-access memory.
MR&R Mobile reclamation and repair.
MRASM Medium-range air-to-surface missile.
MRB 1 Materials, or Management, Review Board.
2 Maintenance Review Board.
3 Main rotor blade.
MRBR MRB(2) Report.
MRBF Mean rounds before failure.
MRBM Ambiguous, can be medium-range or mid-range
ballistic missile.
MRBR Maintenance Review Board Report.
MRBS Mean rounds between stoppages.
MRC 1 Meteorological Research Committee (UK).
2 Major regional conflict [or contingency], for practical
purposes = war.
3 Maximum recommended cruise, or cruising; P adds
power [piston engines].
MCRA Multi-role combat aircraft.
MRCC Materials Research Consultative Committee
(UK).
MRCH Maximum range at constant height.
MRCLOS Missile reference command to line of sight.
MRCP See MRC[3].
MRCS 1 Multiple-RPV control system.
2 Mobile reporting and control system.
MRD 1 Main-rotor diameter.
2 Machine-readable document.
MRDA Missile round design agent.
MRDAU Multiple recorder data-acquisition unit.
MRDEC Missile Research, Development and Engineering
Center (USA).
MRD/FT Missile restraint device field tester.
MRDL Multirole datalink.
MRDP Multi-radar data processing.
MRE 1 Mean radial error (weapon delivery).
2 Multi-role endurance (UAV).
3 Medium-range Empire (UK 1947).
4 Mission Rehearsal Exercise.
mrem Milliröntgen, thus mrem/h.
MRES Mobile remote-emitter simulator.
MRF
1 Meteorological Research Flight.
2 Multi-role proximity fuze.
3 Medical red flag.
4 Multi-role fighter.
MRT
MRFD Modular rugged flat display.
MRG 1 Master reference gyro.
2 Medium-range (ICAO).
3 Main-rotor gearbox.
MRGB Main-rotor gearbox.
MRGL Marginal.
MRH Maintain runway heading.
MRI 1 Magnetic/rubber inspection.
2 Magnetic resonance inspection, or imaging.
MRIR Medium-resolution infra-red radiometer.
MRIS Medium-resolution spectroradiometer.
MRIU Missile remote interface unit.
MRL Modular rocket launcher.
MRLG Monolithic ring-laser gyro.
MRM 1 Medium-range missile.
2 Map rectification machine.
MRMS Mission-ready management system, or service.
MRO 1 Maintenance and Repair Organization.
2 Maintenance repair and overhaul.
3 Mars reconnaisance orbiter.
MROC 1 Multi-role operations cabin (air defence).
2 Minimum [rarely maximum] rate of climb.
M-Rose Multi-tasking real-time operating-system
executive.
MRP 1 Medium-angle rocket projectile (air/ground sight
setting).
2 Multi-annual research programme (EC).
3 Materials requirement[s] planning.
4 Manufacturing resources planning.
5 Materials, resource and planning.
6 Mobile repair party.
7 Machine-readable passport.
8 Modular reconnaisance pod.
9 Mission replay.
10 Meteorological reporting point.
MRPC Mercury-Rankine power conversion.
MRPV Mini-RPV.
MRR 1 Mission-reliability rate.
2 Multimode radar; in Norwegian air defence, radio.
3 Manufacturing revision request.
4 Mechanical-reliability report.
5 Maritime radar reconnaisance.
6 Missile, or medium, range-recovery.
MRRV 1 Manoeuvring (British spelling), or maneuverable,
re-entry vehicle.
2 Multi-role reusable vehicle.
MRS 1 Master, or military, radar station, or site.
2 Maintenance recording system.
3 Mobile radio service.
4 Medical record system.
5 Monitoring and ranging station.
6 Meteorological radar station, service, or system.
7 Mobility requirements study.
8 Mountain Rescue Service.
9 Magyar Repulo Szovetseg, sport-aviation association
(Hungary).
MRS Generalized mass, esp. in co-ordinates of dynamic
model.
MRSA Mandatory radar service area.
MRSI Multiple-round[s] simultaneous impact.
MRSP Multifunction radar-signal processor.
MRSR Multi-role survivable radar.
MRT 1 Maximum reheat thrust.
2 Military rated thrust.
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