STOVL Short Takeoff-Vertical Landing. Capability of certain vectored-thrust aircraft, notably the Harrier and variants of the future Joint Strike Fighter. Short takeoff is a.s.sisted by a fixed "ski-jump" ramp. Short Takeoff-Vertical Landing. Capability of certain vectored-thrust aircraft, notably the Harrier and variants of the future Joint Strike Fighter. Short takeoff is a.s.sisted by a fixed "ski-jump" ramp.

T-38 Talon Twin-turbojet advanced trainer, over 1,100 built by Northrop. Entered service in 1961. First supersonic aircraft specifically designed as a trainer. Twin-turbojet advanced trainer, over 1,100 built by Northrop. Entered service in 1961. First supersonic aircraft specifically designed as a trainer.

T-3A Firefly Lightweight two-seat propeller-driven trainer based on British Slingsby T67. Used by U.S. Air Force for screening of prospective pilots. Top speed 178 mph, ceiling 19,000 ft. Lightweight two-seat propeller-driven trainer based on British Slingsby T67. Used by U.S. Air Force for screening of prospective pilots. Top speed 178 mph, ceiling 19,000 ft.

TARPS Tactical Air Reconnaissance Pod System. A 1,700-pound/770 kg pod built by Naval Avionics Center and fitted to four F-14 fighters in each carrier air wing. Pod carries a 9-inch panoramic camera, 12-inch frame camera, and infrared line scanner. Tactical Air Reconnaissance Pod System. A 1,700-pound/770 kg pod built by Naval Avionics Center and fitted to four F-14 fighters in each carrier air wing. Pod carries a 9-inch panoramic camera, 12-inch frame camera, and infrared line scanner.

TDY Temporary Duty. A military a.s.signment to a location away from one's normal duty station. TDY generally involves separation from family and ent.i.tles personnel to supplementary pay and allowances. Temporary Duty. A military a.s.signment to a location away from one's normal duty station. TDY generally involves separation from family and ent.i.tles personnel to supplementary pay and allowances.

TERCOM Terrain Contour Matching, a cruise-missile-guidance concept that relies on a radar altimeter and a stored digital map of elevations along the line of flight. Flight plans require detailed and lengthy preparation, and cannot be generated for relatively flat, featureless terrain. Terrain Contour Matching, a cruise-missile-guidance concept that relies on a radar altimeter and a stored digital map of elevations along the line of flight. Flight plans require detailed and lengthy preparation, and cannot be generated for relatively flat, featureless terrain.

Top Gun U.S. Navy Fighter Weapon School at NAS Fallon, NV. Responsible for training fleet pilots in air-combat maneuvering. U.S. Navy Fighter Weapon School at NAS Fallon, NV. Responsible for training fleet pilots in air-combat maneuvering.

TRAP Tactical Recovery of Aircraft and Personnel. Tactical Recovery of Aircraft and Personnel.

U-2 High-alt.i.tude (over 90,000 ft/27,430 m) reconnaissance aircraft originally developed in 1950 for the U.S. Central Intelligence Agency by Lockheed. Single J57, later J75 turbojet. Many variants with diverse sensors operated by the USAF and NASA (civilian research). High-alt.i.tude (over 90,000 ft/27,430 m) reconnaissance aircraft originally developed in 1950 for the U.S. Central Intelligence Agency by Lockheed. Single J57, later J75 turbojet. Many variants with diverse sensors operated by the USAF and NASA (civilian research).

UAV Unmanned Aerial Vehicle. Also known as a drone or RPV (remotely piloted vehicle). A recoverable pilotless aircraft, either remotely controlled over a radio-data link, or preprogrammed with an advanced autopilot. The U.S. Air Force has tended to resist any use of UAVs, except as targets, because they take jobs away from pilots. There are also real safety concerns about operating UAVs and manned aircraft in the same airs.p.a.ce, since they are usually small and hard to see. Unmanned Aerial Vehicle. Also known as a drone or RPV (remotely piloted vehicle). A recoverable pilotless aircraft, either remotely controlled over a radio-data link, or preprogrammed with an advanced autopilot. The U.S. Air Force has tended to resist any use of UAVs, except as targets, because they take jobs away from pilots. There are also real safety concerns about operating UAVs and manned aircraft in the same airs.p.a.ce, since they are usually small and hard to see.

UCAV Unmanned Combat Aerial Vehicle. Also known as a drone or RPV (remotely piloted vehicle). A recoverable pilotless aircraft, either remotely controlled over a radio-data link, or preprogrammed with an advanced autopilot. Unmanned Combat Aerial Vehicle. Also known as a drone or RPV (remotely piloted vehicle). A recoverable pilotless aircraft, either remotely controlled over a radio-data link, or preprogrammed with an advanced autopilot.

UH-1N "Huey" light utility helicopter found in Marine light-attack squadrons and support units. "Huey" light utility helicopter found in Marine light-attack squadrons and support units.

UH-46 Aging Boeing Vertol "Sea Knight" twin-rotor helicopter found in Navy utility and logistic squadrons. Nicknamed "Bullfrog." Aging Boeing Vertol "Sea Knight" twin-rotor helicopter found in Navy utility and logistic squadrons. Nicknamed "Bullfrog."

UPT Undergraduate Pilot Training Undergraduate Pilot Training V-22 Osprey Bell-Boeing-built twin-engine tilt-rotor aircraft, combining the agility of a helicopter with the speed and range of a fixed-wing turboprop. Joint Marine/Navy/Air Force program, delivery began in 1997. Bell-Boeing-built twin-engine tilt-rotor aircraft, combining the agility of a helicopter with the speed and range of a fixed-wing turboprop. Joint Marine/Navy/Air Force program, delivery began in 1997.

VA Navy Attack Squadron, previously equipped with A-7 or A-6 aircraft. With the retirement of these types, this squadron designation is no longer used. Navy Attack Squadron, previously equipped with A-7 or A-6 aircraft. With the retirement of these types, this squadron designation is no longer used.

VAQ Navy Tactical Electronic Warfare Squadron, equipped with EA-6 Prowler aircraft. Navy Tactical Electronic Warfare Squadron, equipped with EA-6 Prowler aircraft.

Variable geometry Ability of an aircraft to change the sweep of its wings in flight, to optimize performance for a given speed and alt.i.tude. Ability of an aircraft to change the sweep of its wings in flight, to optimize performance for a given speed and alt.i.tude.

VAW Navy Carrier Airborne Early Warning Squadron, equipped with E-2C Hawkeye aircraft. Navy Carrier Airborne Early Warning Squadron, equipped with E-2C Hawkeye aircraft.

VF Navy Fighter Squadron, typically equipped with F-14 Tomcats. Navy Fighter Squadron, typically equipped with F-14 Tomcats.

VFA Navy Strike Fighter Squadron, typically equipped with F/A-18 Hornets. Navy Strike Fighter Squadron, typically equipped with F/A-18 Hornets.

Viewgraph An overhead projector transparency or slide used in briefings or presentations. Also spelled Vu-graph. An overhead projector transparency or slide used in briefings or presentations. Also spelled Vu-graph.

VMA Marine Attack Squadron (e.g., VMA-211). Typically equipped with AV-8B Harrier. Marine Attack Squadron (e.g., VMA-211). Typically equipped with AV-8B Harrier.

VMAT Marine Attack Training Squadron (e.g., VMAT-203). Typically equipped with AV-8B Harrier. Marine Attack Training Squadron (e.g., VMAT-203). Typically equipped with AV-8B Harrier.

VMFA Marine Fighter Attack Squadron (e.g., VMFA-115). Typically equipped with F/A-18 Hornet. Marine Fighter Attack Squadron (e.g., VMFA-115). Typically equipped with F/A-18 Hornet.

VMFAT Marine Fighter Attack Training Squadron (e.g., VMFAT-101). Typically equipped with F/A-18 Hornet. Marine Fighter Attack Training Squadron (e.g., VMFAT-101). Typically equipped with F/A-18 Hornet.

VMGR Marine Aerial Refueler Transport Squadron (e.g., VMGR-252). Typically equipped with KC-130. Marine Aerial Refueler Transport Squadron (e.g., VMGR-252). Typically equipped with KC-130.

VP Navy Patrol Squadron, typically equipped with land-based P-3 Orion aircraft. Navy Patrol Squadron, typically equipped with land-based P-3 Orion aircraft.

VRC Fleet Logistics Support Squadron (Carrier onboard delivery) equipped with C-2 Greyhound aircraft. Fleet Logistics Support Squadron (Carrier onboard delivery) equipped with C-2 Greyhound aircraft.

VS Navy Sea Control Squadron equipped with S-3 Viking aircraft. Navy Sea Control Squadron equipped with S-3 Viking aircraft.

V/STOL Vertical/Short Takeoff and Landing. Vertical/Short Takeoff and Landing.

VT Navy Training Squadron. Equipped with a wide variety of aircraft-carrier training squadrons typically fly the T-2 Buckeye or T-45 Goshawk. Navy Training Squadron. Equipped with a wide variety of aircraft-carrier training squadrons typically fly the T-2 Buckeye or T-45 Goshawk.

Wild Weasel An aircraft configured with Radar Homing and Warning (RHAW) gear and Anti-Radiation Missiles (ARMs) operated to suppress enemy surface-to-air-missile sites. Originally performed by F-100F, F-105F, and F-4G Phantom II aircraft, this mission will increasingly be borne by specially trained and equipped F-16Cs, F/A-18Cs, and EA-6Bs. An aircraft configured with Radar Homing and Warning (RHAW) gear and Anti-Radiation Missiles (ARMs) operated to suppress enemy surface-to-air-missile sites. Originally performed by F-100F, F-105F, and F-4G Phantom II aircraft, this mission will increasingly be borne by specially trained and equipped F-16Cs, F/A-18Cs, and EA-6Bs.

XO Executive Officer, second in command of a squadron, vessel, or equivalent unit. Executive Officer, second in command of a squadron, vessel, or equivalent unit.

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