1Dk4eXg

ECSL, ECSM, ECSR
10 Enhanced communications system[s].
11 Economical cruising speed.
ECSL, ECSM, ECSR Respectively ECS(1) plus left
card, miscellaneous, right card.
ECSR East Coast Spacelift Range (USAF).
ECST Electronic-combat systems-tester (USAF).
ECSVR Engine-caused shop-visit rate.
ECT Enterprise caching technology.
ECTM Engine-condition trend-monitoring.
ECU 1 European Currency Unit (pronounced Ekyu,
commonly called Euro).
2 Engine-change unit (complete bolt-on piston engine
powerplant with cowl).
3 Environmental, or engine, or electronic, or Eicas,
control unit.
4 Exercise Control Unit (a military formation).
5 External-compensation unit.
EC UK Engineering Council (UK).
ECVS Emergency communications voice system, or
switch.
ECW 1 Electronic Combat Wing.
2 Enhanced compressed wavelet.
ECWL Effective combat wing loading.
ED 1 Emergency distance (or distress signal).
2 Engineering development (part of progress schedule).
3 End of descent (Lockheed uses ‘EoD’).
4 Explosive device.
5 Environmental damage.
6 Eicas display.
7 Followed by a two-digit number, design assurance
levels for avionics systems, equivalent to DO-178B and
DO-254. (Eurocae).
E/D End of descent.
EDA 1 Effective disc area (helicopter).
2 Electronic design automation.
3 Excess defense article, available for sale (US DoD).
4 European Defence Agency [20 June 2004–, office,
Brussels] (Int.).
EdA Ejercito del Aire [Air Force, Spain].
EDAC See EDC(4).
EDAU Engine, or extended, data-acquisition unit.
EDB Extruded double-base.
EDC 1 European Defence Community.
2 Early display configuration.
3 Eros data centre.
4 Error detection and correction [often EDAC].
Edcars Engineering data computer-assisted retrieval
system.
Edcas Equipment designers’ cost analysis system.
EDCT Expected departure clearance time, issued to a
flight as part of traffic-management program (FAA).
EDD Electronic data display (ATC flight data, tabular
callsigns, heights, tracks and position information).
EDDS 1 Explosive-device detection system.
2 electronic document distribution service.
eddy 1 Local random fluid circulation drawing energy
from flow on much larger scale and brought about by
pressure irregularities, eg from passage of unstreamlined
body.
2 In meteorology, developed vortex constituting local
irregularity in wind producing gusts and lulls.
eddy current Generated in conductor by varying
magnetic field; to reduce ** cores are built up of insulated
laminations, iron dust or magnetic ferrite.
EDT
eddy damping Automatic damping by eddy currents
generated by moving conductor.
eddy Mach wave radiation One of three major sources of
jet-engine noise, associated with supersonically
convecting disturbances.
EDEM European defence equipment market.
EDG 1 Electrical-discharge grinding.
2 Engine-driven generator.
edge alignment Distance, parallel to chord of propeller
section, from centreline of blade to leading edge at any
station.
edge diffraction Near-radial reflections caused by impedence
mismatch around a radar antenna perimeter.
edge effect Distortion of eddy-current pattern when
testing for cracks near edge of material.
edge enhancement Increasing the contrast at the
periphery of an image, to render it easier to distinguish
[important in recon. and baggage screening].
edge flare Rim of abnormal brightness around edge of
video picture.
edge keys Buttons around electronic display.
edge management Strict discipline of maintaining
optimum LE of wing, tail [and pylons, if present] for aerodynamics
and radar signature.
edge elevator Deck-edge elevator (carrier).
EDI 1 Electronic-data interchange, or interface,
between single computers or groups; F adds function.
2 Electronic design information; L adds library.
3 Electron-drift instrument.
4 Engine-data interface; F adds function, U unit.
Edifact Electronic-data interchange for administration,
commerce and transport.
EDIG European Defence Industries Group [in April
2004 merged into ASD5, office same address at B-1200
Brussels] (Int.).
E-Dircm Escort directional IR countermeasures
(USAF).
EDIU Engine-data interface unit.
EDL 1 Engage/disengage logic.
2 Electrical-discharge laser.
3 Entry, descent and landing.
EdL Erprobungsstelle der Luftwaffe (G).
Edlar European data-link for aerial reconnaissance
(Int.).
EDM 1 Electrical-discharge machining.
2 Engineering development model.
3 Evasive defence manoeuvres.
4 Engine-data multiplexer.
EDMS Electronic data-management system[s].
Edna Enhanced diagnostic aid.
EDO Extended-duration orbiter.
EDP 1 Electronic data-processor, or processing.
2 Engine-driven pump.
3 Experimental data-processor (Eurocontrol).
4 Engineering-development pallet.
5 Engine development plan.
EDR Engineering design requirements.
EDS 1 Explosive[s], or electronic, detection system.
2 European Distribution System; A adds aircraft
(USAF).
EDSF Electronic-data standard exchange.
EDSS Explosives-detection security system.
EDT 1 Eastern Daylight Time (US).
2 Expanded data-transfer; M adds module, S system.
223