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JFDP
JFDP Joint force development process, broad initiative
at inter-service co-operation (US).
JFET Junction field-effect transistor.
JFHQ Joint Forces HQ.
JFI Joint fires initiative.
JFIT Joint fires integration and interoperability team
(US).
JFL Joint Futures Laboratory (JFC2).
JFN 1 Joint fires network [forest-fire mission planning].
2 Joint Forces Network.
J-FOCSS, J-fox Joint-force command support system.
JFS Jet-fuel starter.
JFTO Joint flight-test organization.
JFTC Joint Force Training Center (NATO).
JFTL Joint Future Theater Lift [USA–USAF].
JG 1 Jagdgeschwader, fighter unit equivalent to UK
group or US wing (G).
2 Junior Grade (USN).
JGr Jagdgruppe, equivalent to UK wing or US group
(G).
JGSDF Japanese Ground Self-Defence Force (= army).
JHC Joint Helicopter Command [multi-service, 1999–]
(UK).
JHCU Jamming-head control unit; P adds processor.
JHL Joint Heavy Lift, proposed multiservice logistics
aircraft (US).
Jhmcs, JHMCS Joint helmet-mounted cueing system.
J-HPSSL Joint high-power solid-state laser (US multi-
Service).
JHQ Joint Headquarters.
JHSU Joint Helicopter Support Unit (UK).
JHU Johns Hopkins University; APL adds Applied
Physics Laboratory.
JI Joint implementation.
J 2 Non-dimensional damped natural frequency [often
J 1 ].
JIAAC Junta for civil air accidents (Argentina).
JIADS Joint integrated air-defense system.
JIAWG Joint Integrated [also rendered as Industrial]
Avionics Working Group (US).
JIC 1 Jet-induced circulation.
2 Joint industrial company, prime contractor interface
in typical collaborative programme with members
assigned by all participating nations.
3 Just in case.
4 Joint intelligence centre.
JICF Jet in cross-flow.
Jico, JICO Joint interoperability, or interface, control
officer.
JIEDDO Joint IED Defeat Organization (DoD).
JIES Joint interoperability evaluation system.
Jifdats Joint-services in-flight data transmission system
(US).
jig Hard tooling; any rigid frame in which a part (eg of
airframe) is assembled.
JIGI Joint-Stars imagery geolocation improvement.
jigsaw Multi-lobed rotor forming moving element of
wheel brake.
JILL Jet-induced lift loss.
Jimpacs Joint improved multi-mission payload aerial
surveillance, combat-survivable.
jink To take sharp avoiding action, eg against AAA fire.
Jintaccs Joint interoperability of tactical command and
control systems.
JOC
JIO Joint Intelligence Organisation (Australia).
JIOC 1 Joint Information Operations Center (USSC).
2 Joint Intelligence Operations Center (USA).
JIP Joint Interface Program, between different systems
or services (US).
JIRD Joint initial, or interim, requirements document.
J/IST Joint, or JSF, integrated subsystems technology.
JIT production Just in time.
JITS Joint Integrated Technical Support (MoD/RAF).
jitter 1 Transmission of DME pulses with random
spacing, to avoid locking-on to another aircraft interrogating
same beacon.
2 ECCM technique in which p.r.f. is made to vary
unpredictably.
jitterbug Hand-held rotary buffer/polisher.
jitters JTRS.
Jiva, JIVA Joint intelligence virtual architecture.
JJPTP Joint jet-pilot training programme.
J-Lars, JLARS Joint-liaison advanced radio system
(US civil government).
JLD Jet-lag diet.
J-lens, JLENS Joint land-attack missile/cruise missile
defense elevated netted sensor system.
JM JTIDS module[s].
JMCC Johnson Missile Control Center (NASA JSC).
JMCIS Joint Maritime Command information system
(US).
JMD Joint manufacturing demonstration.
JMEM Joint munitions effectiveness manual (US
armed forces).
JMG Joint Meteorological Group.
JMIC Joint Military Intelligence College (Washington
DC).
JMOD JSAF(1) Block Modernization Program.
JMPS, Jumps 1 Joint mission planning system.
2 Joint Combat Aircraft mission planning system
(UK).
JMR Jason microwave radiometer.
JMRC Joint mobile relay centre.
JMSDF Japanese Maritime Self-Defence Force, =
navy.
JMSNS Justification of major-system new start.
JMSPO Joint Meteorological System Program Office
(DoD).
JMTSS Joint multichannel trunking and switching
system.
JNC Jet navigation chart.
JNI Java native interface.
JNLWD Joint Non-Lethal Weapons Directorate
(DoD).
JNR Jamming-to-noise ratio.
JNT Joint.
JNWPU Joint Numerical Weather Prediction Unit (US
1954–).
JOAC Junior Officers Air Course (RN).
Joanna Joint airborne night navigation and attack.
JOAP Joint oil analysis program (USAF).
job card Actual piece of card traditionally used to record
in handwriting details of maintenance task, part number
and other information required in order to provide
authority to draw item[s] from stores. Now becoming
obsolete.
Jo-bolt Patented internally threaded three-part rivet.
JOC 1 Joint operations centre.
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