igni - infr
- improper grade
- improved capability missile
- improved computer controlled self optimizing variable geometry wing
- improved dirt road
- improved manned space interceptor
- improved plate theory
- improved theory
- improved version
- improvement of track
- improvement threshold
- improver
- improvised mine
- improvised minefield pattern
- improvised shelter
- impulse maneuver
- impulse missile
- impulse missile engine
- impulse noise
- impulse programming
- impulse to volume ratio
- impulsive admittance
- impulsive load
- impulsive signal
- impulsive transfer maneuver
- impulsive velocity increment
- impunity
- in air refueling mission
- in beam multipath
- in course guidance
- in flight acquisition
- in flight analysis
- in flight burning
- in flight control
- in flight failure
- in flight firing
- in flight maintenance
- in flight performance monitoring
- in flight refueling
- in flight shutdown
- in flight shutoff
