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RCR
RCR 1 Runway condition reading.
2 Route contingency reserve (fuel).
3 Routeing and circuit restoral.
R-CRS Report on course.
RCS 1 Reaction-control system.
2 Radar cross-section.
3 Ride-control system.
4 Range control station.
5 Remote control system.
RCSM Resident customer-support manager.
RCSR Radar cross-section reduction.
RCSS 1 Remote-controlled signals-intelligence system.
2 Remotely controlled surveillance system.
RCSU Remote-control and status unit (navaids).
RCT 1 Reply code train (IFF, SSR).
2 Royal Corps of Transport (UK).
3 Reverse-conducting thyristor.
4 Rear-crew trainer.
5 Rear cargo tank.
RCTC Rear-crew trainer cabin.
RC2P Rehosted command and control processor.
RCU 1 Range converter unit.
2 Reaction, or receiver, or rudder, or recorder, or
remote control unit.
RCV 1 Reaction-control valve.
2 Robotic command (or remotely controlled) vehicle.
rcv Receive [rcvr receiver, rcvs receives].
RCW 1 Roll-control wheel.
2 Reaction control wheel.
RD 1 Ramp door, thus * uplock.
2 Random discontinuous fibre.
3 Rigged dry, for dusting rather than spraying (agaviation).
4 Report departure, or departing.
5 Relative density.
6 Restricted data.
7 Long-range (R)
8 Radar ranging (R).
Rd Radio channel for data.
r/d Rate of descent.
RDA 1 Runway de-icing agent.
2 Requirements, development and analysis.
RDAF Royal Danish air force [UK usage].
RD&A Research, development and acquisition.
RD&E Research, development and engineering.
RDARA Regional domestic air-route area.
RDAS Reconnaissance data annotation set.
RDAU Remote data acquisition unit.
RDB 1 Requirements data bank (originally AFLC).
2 Raw-data buffer.
RDBM Relational database management (more often
RDM); S adds system.
RDC 1 Rate-of-descent computer.
2 Regional dissemination center (NASA, technology
transfer).
3 Radar data converter, or correlator.
4 Ramp door control.
5 Remote data concentrator.
6 Routeing-domain confederation.
7 Resolver-to-digital convertor.
8 Rapid deployment capability (USN).
RDCE Radio distribution and control equipment.
RDCP Refuel/defuel control panel.
RDX
RDD 1 Routine dynamic display (maritime/ASW navigation
as distinct from tactical situation).
2 Radar data display.
RDDBS Redundant distributed data-base system.
RDDMI Remote (or radio) digital direction magnetic
indicator.
RDDU Remote demand and display unit.
RDAF Royal Danish air force [UK usage].
RDE, R&DE Research and development engineering
(or evaluation).
RDEC Rapid data-entry cassette.
RDECom, RDECOM Research, Development and
Engineering Command (from 1 March 2003] (USA).
RDF 1 Radio direction-finding, security cover for
radar, 1936–42 (UK).
2 Rapid Deployment Force (US).
3 Routeing-domain format.
RDG Ridge of high pressure.
RDH Reference datum height of ILS.
RDI 1 Radar Doppler à impulsions (F).
2 Reference designated indicator.
3 Routeing-domain identifier.
RDIDS Rapid-deployment intrusion-detection system.
RDJTF Rapid Deployment Joint Task Force (US).
RDL, rdl 1 Radial (bearing, heading).
2 Rapid-deployment launcher.
RDM 1 Random-deflection monitor.
2 Relative-distance measurement.
3 Radar Doppler multifunction (F).
RDMA Remote direct memory access.
RDMI Radio directional (or distance) magnetic
indicator.
RDMS Relational database management systems.
RDMSS Redmiss.
RDO Redistribution order.
rdo Radio (FAA).
RDP 1 Radar data, or disk, processor, or processing; S
adds system, U unit.
2 Range Doppler profile, or profiling.
RDPPS Radar data processing and presentation
system.
RDPS Radar data processing system.
RDPU Radar display processing unit.
RDR 1 Radar.
2 Radar departure route.
RDS 1 Rudder-disconnect speed (Autoland).
2 Remote diagnostics server.
3 Radial driveshaft.
RDSS 1 Rapidly deployable surveillance system.
2 Radio determination satellite service (Inmarsat).
3 Replacement data-storage system.
RDT Radar-data transfer.
RDT&E Research, development, test and engineering
(or evaluation).
RDTS Remote detection and tracking sensor (USAF).
RDU 1 Remote display unit.
2 Receiver/decoder unit.
3 Receipt and Despatch Unit [RNAS Anthorn] (FAA).
RDV Requirements development and validation.
RDVS Rapid-deployment voice switch (FAA).
RDX 1 Powerful explosive (CH 2 N. NO 2 ) 3 ; also called
Hexogen, Cyclonite. Now family of explosives still used
as bomb, mine and other fillings, though under other
names and designations.
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