I | in phase |
I | inertia |
I | integer valve |
I | irradiated |
I&C | installation and checkout |
I&C | instrumentation and communication |
I&C | integration and checkout |
I&C/O | installation and checkout |
I&ES | information and electronics system |
I&O | inlet and outlet |
I&Q | in phase and quadrature |
I&R | inspect and review |
I&R | interchangeability and replaceability |
I&RS | instrumentation and range safety |
I&S | interchangeability and substitutability |
I&T | integration and test |
I-load | initial load |
I-load | initialization load |
I/C | intercom |
I/F | interface |
I/FU | interface unit |
I/O | input/output |
I/OB | input/output bus |
I/OC | input/output controller |
I/OMI | integration, operations, and maintenance instruction |
I/OP | inboard/outboard profile |
I/OT | input/output test |
I/OU | input/output unit |
I/P | impact predictor |
I/P | in progress |
I/Q | in phase/quadrature |
I/S | installation of systems |
I/T | intertank |
I/U | instrumentation unit |
I/V | inlet valve |
I/W | in work |
I3L | isoplanar integrated injection logic |
IA | implementation agency |
IA | input axis |
IA | interface agreement |
IA | inverter assembly |
IA | issuing agency |
IA&T | integration, assembly, and test |
IAA | International Aerospace Abstracts |
IAB | IUS Assembly Building |
IACO | installation, assembly, and checkout |
IACS | inertial attitude control system |
IAD | interface agreement document |
IAD | interface analysis document |
IAF | interactive facility |
IAH | interface attachment hardware |
IAL | immediate action letter |
IAL | international algebraic language |
IAM | International Association of Machinists |
IAM | information asset management |
IAN | institutional area network |
IAPU | improved auxiliary power unit |
IAS | Institute of Aeronautical Sciences |
IAS | impact assessment sheet |
IAS | indicated airspeed |
IAS | integrated avionics subsystem |
IASS | inverter/ATCS support structure |
IAT | integrated avionics test |
IAV | inventory adjustment voucher |
IAW | in accordance with |
IB | inboard |
IB | inert building |
IB | inner button |
IB | instruction book |
IBC | impurity-band conductor |
IBEW | International Brotherhood of Electrical Workers |
IBF | internally blown flap |
IBM | International Business Machines |
IBR | implementation baseline review |
IBSS | Infrared Background Signature Survey |
IBT | International Brotherhood of Teamsters |
IC | IOC chamber |
IC | incremental cost |
IC | inertial component |
IC | information center |
IC | initial condition |
IC | integrated circuit |
IC | integration cell |
IC | intercom |
IC | intercommunications |
IC | intercomputer |
IC | intercomputer communication |
IC | interim change |
IC | internal combustion |
IC/ES | intercommunication/emergency station |
ICA | intelligent communicating agent |
ICA | interim change analysis |
ICA | item change analysis |
ICAAD | interactive computer-aided analysis and design |
ICAI | intelligent CAI |
ICAM | integrated computer-aided manufacturing |
ICAO | International Civil Aviation Organization |
ICAPC | increased-capability adaptive payload carrier |
ICAR | initiated corrective action report |
ICAR | investigation and corrective action report |
ICB | interim change bulletin |
ICB | interrupt control block |
ICBC | IMAX cargo bay camera |
ICBM | intercontinental ballistic missile |
ICC | Interstate Commerce Commission |
ICC | intercomputer channel |
ICC | intercomputer communication |
ICC | interface control chart |
ICC | interface control contractor |
ICCD | intensified CCD |
ICCP | interface coordination and control procedure |
ICCWG | Intercenter Communication Working Group |
ICD | interface control document |
ICD | interface control documentation |
ICD | interface control drawing |
ICDR | incremental critical design review |
ICDS | interface control document schedule |
ICDU | inertial coupling data unit |
ICE | input control element |
ICE | instrument checkout equipment |
ICE | instrument/communication equipment |
ICE | instrumentation/communication equipment |
ICF | interface control function |
ICG | in-flight coverall garment |
ICHA | integrated cargo hazard assessment |
ICI | interim configuration inspection |
ICL | interface control layout |
ICM | instrumentation and communication monitor |
ICM | integrated cost module |
ICMS | indirect cost management system |
ICMT | intercontract material transfer |
ICN | intercomputer network |
ICN | interface change notice |
ICO | integrated checkout |
ICO | integrated-communication officer |
ICP | ICS control program |
ICP | indicator control panel |
ICP | interface change proposal |
ICP | interface control panel |
ICP | inventory control point |
ICR | inductance, capacitance, and resistance |
ICR | instruction change request |
ICR | interface compatibility record |
ICRB | Interface Change Review Board |
ICRP | International Council on Radiation Protection |
ICS | instrumentation control system |
ICS | intercommunication system |
ICS | interface control specification |
ICS | interphone control station |
ICS | interpretive computer simulator |
ICSU | International Council of Scientific Unions |
ICT | influence coefficient test |
ICT | interface control tooling |
ICTC | inertial component temperature controller |
ICTE | inertial component test equipment |
ICU | in-flight calibration unit |
ICU | interface control unit |
ICW | interrupted continuous wave |
ICWG | Interface Control Working Group |
ID | identification |
ID | identification data |
ID | inside diameter |
ID | integrated diagnostic |
ID | interactive discrimination |
ID | interface device |
ID | interface document |
ID&C | integrated displays and controls |
ID&CA | inverter distribution and control assembly |
ID&CS | ID&C subsystem |
ID&D | inspection damage and discrepancy |
IDA | integrated display assembly |
IDA | interface definition agreement |
IDA | intermediate data array |
IDAC | integrated digital-analog converter |
IDAR | interim data assessment review |
IDAS | integrated data acquisition system |
IDB | in-suit drink bag |
IDBMS | integrated data base management system |
IDC | IMBLMS digital computer |
IDC | integrated displays and controls |
IDC | interface document control |
IDCA | inverter distribution and control assembly |
IDCP | interdivision change proposal |
IDD | IGS data denial |
IDD | integrated data denial |
IDD | interface definition document |
IDD | interface description document |
IDD | interface design document |
IDE | initial design evaluation |
IDE | integrated design environment |
IDE | interactive development environment |
IDEAS | initial design and evaluation analysis system |
IDEAS2 | independent design and evaluation of advanced spacecraft |
IDEF | ICAM definition |
IDEP | interservice data exchange program |
IDG | integrated drive generator |
IDI | instrumentation data item |
IDL | indentured drawing list |
IDMM | Intermediate and Depot Maintenance Manual |
IDMRD | intermediate and depot maintenance requirements document |
IDMRS | intermediate depot maintenance requirements |
IDMS | information and data management system |
IDO | interdivisional operation |
IDOS | integrated display operating system |
IDOT | instrument digital on-line transcriber |
IDP | I-load data pack |
IDP | integrated data processing |
IDP | interface digital processor |
IDR | initial design review |
IDR | interim data review |
IDR | interim design review |
IDR | interim discrepancy report |
IDR | intermediate design review |
IDRA | interdivision revision authorization |
IDRD | information definition requirements document |
IDRD | internal data requirement description |
IDS | I-load data set |
IDS | information data system |
IDS | integrated defense simulator |
IDS | integrated design support |
IDS | integrated design system |
IDS | integrated display system |
IDS | interface data sheet |
IDS | item description sheet |
IDSD | Institutional Data System Division (JSC) |
IDSNET | integrated defense simulator network |
IDSNET | integrated defense system network |
IDSO | interdivisional sales order |
IDSR | initial design status review |
IDSR | interdivisional support request |
IDSS | integrated design support system |
IDSS | integrated diagnostic support system |
IDT | I-load data tape |
IDT | image detector tube |
IDT | image dissector tube |
IDTA | interdivisional technical agreement |
IDU | interface demonstration unit |
IDWA | interdivisional work authorization |
IEA | integrated electronic assembly |
IECM | induced-environment contamination monitor |
IECO | inboard engine cutoff |
IECS | igloo environment control subsystem |
IED | interacting equipment document |
IEEE | International Electrical and Electronic Engineers |
IEEP | incapacitated emergency egress practice |
IEF | isoelectric focusing |
IEFT | integrated experiment functional test |
IEIWG | International Element Interface Working Group |
IEMC | intrasystem electromagnetic compatibility |
IEMCAP | Intrasystem Electromagnetic Compatibility Computer Analysis Program |
IES | information extraction system |
IESD | Instrumentation and Electronic Systems Division (JSC) |
IF | integration facility |
IF | interface |
IF | intermediate frequency |
IF | internal fault |
IF/FDM | intermediate frequency/frequency division multiplexer |
IFA | in-flight analysis |
IFA | interface functional analysis |
IFASC | Integrated Functions Assessment Steering Committee |
IFB | invitation for bid |
IFCG | Interface Control Group |
IFDL | interfacility data link |
IFE | industrial furnished equipment |
IFE | isoelectric focusing experiment |
IFF | identification, friend or foe |
IFFN | identification, friend, foe, neutral |
IFM | in-flight maintenance |
IFO | Information Systems Office |
IFOT | in-flight operations and training |
IFOV | instantaneous field of view |
IFOV | instrument field of view |
IFR | instrument flight rule |
IFRU | in-flight replaceable unit |
IFS | impact and flotation system |
IFS | integrated FEP simulator |
IFS | integrated flight simulator |
IFS | interface specification |
IFT | in-flight test |
IFT | interface tool |
IFTD | interface terminal distributor |
IFTE | intermediate forward test equipment |
IFTM | in-flight test and maintenance |
IFTS | in-flight test system |
IFU | interface unit |
IG | inertial guidance |
IG | inner gimbal |
IG | instrument ground |
IG | instrumentation group |
IG | internal guidance |
IGA | inner gimbal angle |
IGAX | inner gimbal axis |
IGC | interactive gaming center |
IGDR | interim GDR |
IGDR | interior geophysical data record |
IGDS | interactive graphic design system |
IGDS | iodine generating and dispensing system |
IGE | image generating equipment |
IGE | instrumentation ground equipment |
IGES | initial graphic exchange specification |
IGM | interactive guidance mode |
IGM | iterative guidance mode |
IGN&C | integrated guidance, navigation, and control |
IGOR | intercept ground optical recorder |
IGOS | interactive graphic orbit system |
IGS | IONDS global segment |
IGS | inertial guidance system |
IGS | intergimbal assembly |
IGSE | in-space ground support equipment |
IGSE | instrument ground support equipment |
IGV | inlet guide valve |
IGV | inlet guide vane |
IGY | international geophysical year |
IH/SR | integrated hardware/software review |
IHA | interface hazard analysis |
IHP | indicated horsepower |
IHSR | integrated hardware/software review |
IHTV | interim hypersonic test vehicle |
IHX | interloop heat exchanger |
II | implementing instruction |
IIOP | in-orbit plane |
IIS | inspection item sheet |
IIS | interface identification sheet |
IISS | integrated information support system |
IITCS | igloo internal thermal control section |
IK | inner keel |
IL | internal letter |
ILA | instrument landing approach |
ILAS | instrument landing approach system |
ILC | International Latex Company |
ILC | initial launch capability |
ILCCS | integrated launch checkout and control system |
ILMF | intermediate-level maintenance facility |
ILO | integrated logistics operations |
ILP | Integrated Logistics Panel |
ILRV | integral launch and reentry vehicle |
ILS | instrument landing system |
ILS | integrated logistics support |
ILS | integrated logistics system |
ILS/LAR | integrated logistics system and logistics a |
ILSA | integrated logistics support analysis |
ILSC | integrated logistics support concept |
ILSCP | integrated logistics support concept plan |
ILSIM | integration of lethality studies into model |
ILSMT | Integrated Logistics Support Management Team |
ILSP | integrated logistics support plan |
ILSSE | integrated life science Shuttle experiment |
ILSWG | Integrated Logistics Support Working Group |
ILT/RT | imprecisely located target/relocatable target |
IM | information memory |
IM | infrastructure module |
IM | integration management |
IM | interface module |
IM | intermediate moisture |
IM | intermodulation |
IMADS | information management assimilation and delivery system |
IMAS | institutional management accounting system |
IMBLMS | integrated medical/behavioral laboratory measurement |
IMC | image motion compensation |
IMCC | Integrated Mission Control Center |
IMCP | integrated monitor and control panel |
IMCR | integrated master control record |
IMDB | integrated maintenance data base |
IMDS | integrated monitoring and diagnostics system |
IMF | inventory master file |
IMIC | Integrated Management Information Center |
IMIC | integrated management information computer |
IMIP | Industrial Modernization Incentive Program |
IML | inner mold line |
IML | inside mold line |
IMLEO | initial mass in low Earth orbit |
IMO | Integration Management Office |
IMP | inflatable micrometeoroid paraglider |
IMP | information management plan |
IMP | initial memory protection |
IMP | interplanetary monitoring platform |
IMP | inventory management plan |
IMPACT | integrated material productivity action |
IMRB | interim mission reconfiguration base |
IMRO | inspection, modification, and repair order |
IMS | information management system |
IMS | inhibit main store |
IMS | interplanetary monitor satellite |
IMS | inventory management system |
IMSS | in-flight medical supply system |
IMST | integrated mission simulation test |
IMTF | integrated manufacturing test facility |
IMU | inertial measurement unit |
IMUGSE | IMU ground support equipment |
IMUPLM | inertial measurement unit prelaunch monitor |
IMW | intelligent machining work station |
IN | Information Systems Directorate (KSC) |
INBIT | input bit |
INC | installation notice card |
INC | installation notification certificate |
INCO | instrumentation and communication officer |
INDAT | incoming data |
INITCO | initialization and checkout |
INR | inertial reference |
INS | inertial navigation system |
INSAT | India communications satellite |
INT | integrated test |
INTASAT | Instituto Nacional De Tecnica Aerospacial |
INTC/O | integrated checkout |
INTELSAT | International Telecommunications Satellite |
INTF | interim national test facility (CSOC location) |
IO | industral operations |
IOA | input, output, or assembly |
IOA | input/output adapter |
IOB | input/output box |
IOB | input/output buffer |
IOB | input/output bus |
IOBPS | input/output box and peripheral simulator |
IOC | indirect operating cost |
IOC | initial operational capability |
IOC | input/output controller |
IOC | integrated operations configuration |
IOC | item of concern |
IOCP | ITS on-board computer program |
IOCU | input/output control unit |
IOD | initial orbit determination |
IOE | input/output error (log table) |
IOF | initial operational flight |
IOHA | integrated operating hazard analysis |
IOL | interoffice letter |
IOM | input/output module |
IONDS | integrated operational nuclear detection system |
IONDS | integrated operational nuclear detonation system |
IOP | input/output part |
IOP | input/output processor |
IOPL | integrated open-problem list |
IOPT | input/output parameter table |
IOQE | input/output queue element |
IORL | input/output requirements language |
IORTD | input/output relationships and timing diagram |
IOS | Indian Ocean ship |
IOS | initial operational system |
IOS | input/output supervisor |
IOS | instructor operator station |
IOSC | integrated operations support complex (VLS) |
IOT&E | initial operational test and evaluation |
IOT&E | integration operational test and evaluation |
IOU | input/output unit |
IP | identification of position |
IP | impact point |
IP | in plant |
IP | industrial preparedness |
IP | inertial processing |
IP | initial point |
IP | instructor pilot |
IP | instrument payload |
IP | instrument processor |
IP | instrumentation of pulse code modulation master unit |
IP | interfacing processor |
IP | intermediate pallet |
IP | intermediate pressure |
IP | iron pipe |
IPA | industrial preparedness action |
IPA | intermediate-power amplifier |
IPACS | integrated power and attitude control system |
IPAD | integrated program for aerospace vehicle design |
IPAR | irregular parts authorization request |
IPAS | integrated problem assessment system |
IPB | illuminated push button |
IPB | illustrated parts breakdown |
IPC | integrated procurement control |
IPC | intermittent positive control |
IPCL | instrument program and component list |
IPCL | instrumentation program and components list |
IPD | Information Processing Division |
IPDR | incremental preliminary design review |
IPE | industrial plant equipment |
IPF | IUS Processing Facility |
IPL | indentured parts list |
IPL | initial program load |
IPLC | initial program load complete |
IPLS | initial program load start |
IPM | integration program manager |
IPMS | inertial performance measurement system |
IPP | individual program plan |
IPP | industrial preparedness plan |
IPPB | illustrated provisioning parts breakdown |
IPR | ice-point reference |
IPR | in-process review |
IPR | interim problem report |
IPS | information processing system |
IPS | instrument pointing system (subsystem) |
IPS | instrumentation power system (subsystem) |
IPS | integrated propulsion system |
IPS | international pipe standard |
IPS | inverter power supply |
IPS | invoice processing system |
IPSL | interface problem status log |
IPSS | integrated parts statusing system |
IPSS | integrated project scheduling system |
IPT | in-plant transporter |
IPT | internal parameter table |
IPT | internal pipe thread |
IPT | international pipe thread |
IPTCS | igloo passive thermal control section |
IPTR | in-process technical review |
IPWG | Integrated Project Working Group |
IQSY | international quiet sun year |
IQT | initial qualification training |
IR | inclination of the ascending return |
IR | infrared |
IR | inner roll |
IR | inside radius |
IR | interchangeability and replaceability |
IR | international rendezvous |
IR | interrogator-responder |
IR&D | independent research and development |
IRAM | input random access memory |
IRAMS | inertial reference alignment monitor system |
IRAN | inspection and repairs as necessary |
IRANSAT | Iranian government communications satellite |
IRAS | infrared astronomical satellite |
IRBM | intermediate-range ballistic missile |
IRBS | infrared background sensor |
IRBS | intermediate-range ballistic system |
IRBS | intermediate-range booster system |
IRCFE | infrared communications flight experiment |
IRCS | integrated resource control system |
IRD | information requirements description |
IRD | information requirements document |
IRD | initiating reference document |
IRD | integration requirements document |
IRD | interface requirements document |
IRDS | information resource dictionary system |
IRDTS | ITS RF and digital test set |
IRE | Institute of Radio Engineers |
IRG | inertial rate gyro |
IRIG | Interrange Instrumentation Group |
IRIG | inertial rate integrating gyroscope |
IRIG | inertial reference integrating gyroscope |
IRIS | Italian research interim stage |
IRIS | infrared instrumentation system |
IRL | initiating reference list |
IRL | interface requirements list |
IRM | information resource management |
IRM | integrated range mission |
IRME | initiator resistance measuring equipment |
IRN | interface revision notice |
IRN | interim revision notice |
IRP | inertial reference package |
IRR | independent readiness review |
IRR | initial requirements review |
IRR | inspection rejection report |
IRR | integral rocket ramjet |
IRR | integrated readiness review |
IRR | interface requirements review |
IRS | interface requirements specification |
IRST | infrared search track |
IRTCM | integrated real-time contamination monitor |
IRU | IVA replaceable unit |
IRU | inertial reference unit |
IS | installation support |
IS | instrumentation system |
IS | integrated satellite |
IS | interconnecting station |
ISA | inertial sensor assembly |
ISA | instruction set architecture |
ISA | instructional systems approach |
ISA | interim stowage assembly |
ISAR | inverse synthetic-aperture radar |
ISATS | integration spacecraft automated test system |
ISB | independent side band |
ISC | Information Systems Center |
ISC | industrial support contractor |
ISCCB | Internal Software Change Control Board |
ISCM | initial software configuration map |
ISD | inspection supervision disposition |
ISD | instruction sequence diagram |
ISD | instructional systems design |
ISD | instructional systems development (USAF) |
ISEE | international sun-Earth explorer |
ISF | industrial space facility |
ISHA | integrated system hazard analysis |
ISI | initial systems installation |
ISI | instrumentation support instruction |
ISIL | interim support items list |
ISIS | integrated safety information system |
ISL | inertial systems laboratory |
ISLM | integration shop and lab manager |
ISM | image steering mirror |
ISMRB | Information Systems Management Review Board |
ISMS | interactive supply management system |
ISN | internal statement number |
ISO | International Standardization Organization |
ISP | Integrated Space Plan |
ISP | instrumentation support plan |
ISP | integrated support plan |
ISPF | interactive system productive facility |
ISPG | Institutional Support Planning Group |
ISR | industrial security regulation |
ISR | initial system release |
ISR | integrated safety review |
ISR | interim shop release |
ISR | interim system review |
ISR | interrupt service routine |
ISRB | Integrated System Review Board |
ISS | inertial subsystem |
ISS | information subsystem |
ISS | installation support services |
ISS | instruction summary sheet |
ISS | integrated scheduling system |
ISS | integrated system schematic |
ISS | international space station |
ISSA | integrated software safety analysis |
ISSL | initial spares support list |
ISSO | Information Systems Security Office |
IST | initial system test |
IST | instrumentation support team |
IST | integrated systems test |
ISTA | intertank structural test assembly |
ISTB | integrated subsystem test bed |
ISU | international system of units |
ISWG | Integrated Support Working Group |
IT | identification transponder |
IT | integrated technology |
IT&V | integrated test and verification |
ITA | integrated test area |
ITA | integrated test article |
ITA | integrated truss assembly |
ITB | invitation to bid |
ITC | igloo thermal control |
ITC | integrated test configuration |
ITD | informal test description |
ITD | integrated technology demonstration |
ITD | integrated test documentation |
ITDR | integrated technology and design review |
ITE | instrumentation test equipment |
ITE | integration test equipment |
ITE | intersite transportation equipment |
ITI | inspection and test instruction |
ITIS | ITI sheet |
ITL | integrate, transfer, and launch |
ITL | integrated transport launcher |
ITMG | integrated thermal/micrometeoroid garment |
ITO | initial time-out |
ITO | integration and test order |
ITP | informal test plan |
ITP | informal test procedure |
ITP | integral tile part |
ITP | integrated test plan |
ITP | integrated training plan |
ITR | informal test result |
ITR | integrated technology review |
ITR | interim technical report |
ITRB | Integrated Technical Review Board |
ITRD | integrated test requirements document |
ITRR | integrated technology requirements review |
ITS | Institute for Telecommunications Sciences |
ITS | integrated transfer subsystem |
ITS | intercept trajectory simulation |
ITSS | integrated tactical surveillance system |
ITU | International Telecommunication Union |
ITU | infrared telescope unit |
ITV | instrumented test vehicle |
ITV | integrated technology validation |
ITVE | integrated technology validation experiment |
IU | instrument unit |
IU | interface unit |
IUA | inertial unit assembly |
IUA | interface unit adapter |
IUCS | instrumentation update command system |
IUDS | integrated utilities distribution system |
IUE | interface unit error |
IUE | international ultraviolet explorer |
IUI | integrated user interface |
IUO | interunit order |
IURAP | International User Resource Allocation Panel |
IUS | inertial upper stage |
IUS | interim use sheet |
IV | initial velocity |
IV | integrated vehicle |
IV | interface volume |
IV&V | independent validation and verification |
IVA | intravehicular activity |
IVAR | internal variable |
IVBC | integrated vehicle baseline characteristic |
IVBC | integrated vehicle baseline configuration |
IVC | intervehicular communication |
IVE | interface verification equipment |
IVLN | integrated vehicle logic network |
IVP | interface verification plan |
IVS | interface verification summary |
IVSI | instantaneous vertical speed indicator |
IVT | integrated verification test |
IVT | integration, verification, and training |
IVT | interface verification test |
IVT | intervehicular transfer |
IW | in work |
IW | intrawing |
IWBS | indirect work breakdown structure |
IWDS | inter-work-package distributed system |
IWFS | integrated waste fluid system |
IWG | Interface Working Group |
IWP | indirect work package |
IWS | integrated water system |
InAsSb | indium-arsenide-antimonide |
InSb | indium antimonide |
Isp | specific impulse |
ips | inches per second |