1Dk4eXg

UASTAS
UASTAS Unmanned airborne surveillance and targetacquisition
system(s) (DND).
UASV Uninhabited, or unmanned aerial surveillance
vehicle.
UAT 1 Universal-access transceiver.
2 Unidentified air traffic.
UATI Union des Associations Techniques Internationales
(Int.).
UATP Universal air travel plan (Int., US-based).
UAV Unmanned, or uninhabited, air, or aerial, vehicle;
B adds battlelab, S systems, Note: US official abb. is now
UMV.
UB Utility bus.
UBE Ultra-bypass engine.
Ubee, ubie Alternatives to UBE.
UBEP UK bomb enhancement programme.
UBF Underground baggage facility.
UBI Uplink block identifier.
Ubicomp Ubiquitous computing.
UBRE Unit bulk refuelling equipment, 4 × 4 truck.
U/c, u/c 1 Undercarriage, ie landing gear.
2 Under construction.
UCA Undefinitized contract[ing] action (US).
UCAR, Ucar Uninhabited [or unmanned] combat
armed [or air] rotorcraft [previously called R 2 W]
(USA/Darpa).
Ucars Unmanned air vehicle common automatic, or
automated, recovery system.
UCAS Unmanned combat air system.
UCAV Unmanned, or uninhabited, combat air vehicle.
UCC Ultra-compact combustor.
UCCEGA Union des Chambres de Commerce et Établissements
Gestionnaires d’ Aéroports (F).
UCD Urine collection device.
Uchinoura Rocket launch site, Kagoshima prefecture
(J).
UCI 1 Unit construction index; measure of flotation
(ability of landplane to use soft airfields) based on
MTOW, tyre pressure and gear geometry.
2 User computer interface.
UCIIR Uncooled imaging IR; SAL adds semi-active
laser.
UCIMU Unione Costruttori Italiani Macchine
Utensili.
UCL Up command link; opposite of DDL.
UCLA University of California at Los Angeles
[CA90024–2883] (US).
UCNI Unified com/nav/ident.
UCP Ultrasonic capacitance probe.
UCR Uniform commercial rate[s].
UCS 1 Utilities control system.
2 Uniform chromaticity scale.
3 Universal control station (NATO).
UCSD University of California at San Diego
[CA92093–0524] (US).
UCWA Urgent center weather advisory (Sigmet).
UD 1 User data.
2 Upper deck.
3 Unaligned discontinuous.
4 Unambiguous Doppler.
UDA Upper advisory area [usually UADA].
UDACS Universal display and control system.
UDCS Universal drone control system.
UDDF Up- and down-draughts.
UGS
u DE ,U DE Gust vertical speed [design case].
Udet buoy Open-sea tethered buoy to assist downed
aircrew (G, WW2).
U-deta Unsymmetrical diethyltriamine.
UDF 1 U.h.f. direction-finding.
2 Unducted fan engine (GE trademark).
3 Unit development folder (software).
4 User data file [G adds generator].
UDI Unrestricted digital interface.
UDL Universal or unclassified, data-link.
UDM Universal docking module.
UDMH Unsymmetrical dimethylhydrazine rocket fuel.
UDMU Universal decoder memory unit (Gpats).
udometer Rain gauge.
UDP User Datagram protocol.
UDR Upper advisory route.
UDS 1 Unidirectional solidification.
2 Unsupported (or unstocked) dispersed (or dispersal)
site.
UDT Unidirectional transducer.
UDTE Upgraded data-transfer equipment.
UE Unit equipment, or establishment, list of aircraft or
other items serving with combat units.
UE, u/e Under-excitation.
UECNA Union Européenne Contre les Nuisances des
Avions (Int.).
UEDP Uncontained engine debris pattern.
UEET Ultra-efficient engine technology (NASA).
UEJ Unattached expendable jammer.
UEO Western European Union (F).
UER Unscheduled engine removal, or unplanned
engine-removal rate.
UESA U.h.f. electronically scanned array, or array
antenna.
UEU Universal exciter upgrade.
UEWR Upgraded early-warning radar.
UF Uplink format.
UFA Until further advised.
UFC 1 Unified fuel control.
2 Up-front control; D adds display, P panel.
UFCM Uncommanded flight-control movement.
UFCP Up-front control panel.
UFD 1 Up-front display.
2 Ultra-flat display.
UFDR Universal flight-data recorder.
UFH Union Française d’Héicoptères [2003–] (F).
UFIR UAV-to-fighter imagery relay (USAF).
UFL Upper flammability limit.
UFN Until further notice.
UFO 1 Unidentified flying object.
2 U.h.f. follow-on (DoD satellites, to be replaced by
Muos).
3 United Flying Octogenarians (US).
UFPA Uncooled focal-plane array.
UFS Ultimate factor of safety.
UFTAS, Uftas Uniform flight-test analysis system
(AFFTC).
UGAI Unione Giornalisti Aerospaziali Italiani. (I)
Ugine-Séjournet Method of extruding steel using molten
glass as lubricant.
UGM US prefix, underwater-launched surface-attack
missile.
UGS 1 Upgraded silo.
2 Unattended ground sensor(s).
733