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I/V
I/V Instrument/visual controlled airspace.
IVA 1 Input video amplifier.
2 Istituto del Valore Aeronautico (I).
3 Ingeniorsvetenskapsakademien [Stockholm],
(Sweden).
Invadize Patented process of ion-vapour deposition of
aluminium on steel.
IV&V Independent verification and validation (software).
IVD 1 Interactive video disk.
2 Integrated voice and data; M adds modem, N
network.
IVDU Intelligent visual display unit.
IVH Integrated vehicle health [M adds management,
MS monitoring, or management, system].
IVI Interchangeable virtual instrumentation (sets software
standards).
IVKDF Institut von Kármán de Dynamique des Fluides
(Int., also called VKIFD).
IVMMS Integrated vehicle mission-management
system.
IVMS Integrated vehicle management system.
IVR Instrumented visual range.
IVRI Intelligent vehicle research initiative (NASA).
IVRS Interim voice-response system.
IVS 1 Intelligent vehicle system.
2 Interactive video system.
IVSC Integrated vehicle support, or subsystem,
control[s], or controller.
IVSI Instantaneous VSI.
IVSN Initial voice-switched network (NATO).
IVV Instantaneous vertical velocity.
IW 1 Individual weapon.
2 Imminent warning (UK, WW2).
IZS
3 Information warfare [also InfoWar], D adds defense
[UK = defence], O offensive, or officer.
4 Integrated Wing, ATVP adds advanced-technology
verification programme (UK 2004–).
I W Moment of intertia of rotating wheel or disc.
IWAAS Initial wide-area augmentation system.
IWAC Integrated weapon-aiming computer.
IWASM Interntional Women’s Air and Space Museum
(Cleveland, OH).
IWBP Independent wide-band repeater.
IWC Integrated weapon complex.
IW/EW Information warfare and electronic warfare.
IWFN Inhibited white fuming nitric; A adds acid.
IWG Internet Working Group.
IWG-BAO Industry Working Group on Business
Aircraft Operations (DoT).
IWI Interceptor weapons instructor.
IWIDS Integrated weather information display system.
IWIU Integrated weapons interface unit.
IWM 1 Imperial War Museum (London, UK).
2 Institution of Works Managers (UK).
I-W/M Index of warnings and malfunctions.
IWR Instrument weather rating, proposed by JAA to
replace UK’s IMC.
IWS Integrated weapons system.
I Moment of inertia about the X-axis.
Iy Moment of inertia about the Y-axis.
IYQS International Years of the Quiet Sun.
I z Moment of inertia about the Z-axis.
Iζ Helicopter blade moment of inertia about the lagging
hinge.
Izlid IR zoom laser illuminator/designator.
Izod Standard test for impact strength of notched specimen
subjected to transverse blow[s] of known energy.
IZS Satellite (R).
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