The 'Unmanned Combat Air Vehicle (UCAV)' or "combat drones" is the name of a new class of
Unmanned Aerial Vehicles (UAVs). They differ from ordinary UAVs, because they are designed to deliver weapons (attack targets) – possibly with a great degree of autonomy.
Current UCAV concepts call for an aircraft which would be able to operate virtually autonomously. It will be programmed with route and target details, and conduct the mission without help from human controllers.
Laws of war
Most countries are bound to international
Laws of war (such as the
Geneva Conventions). These laws govern the conduct of participants in war (and also defines combatants). These laws place a burden upon participants to limit
collateral damage through proper identification of targets and distinction between combatants and non-combatants. It is in this area where the use of completely autonomous weapon systems are problematic, since it is difficult to assign accountability to a person. It is for these reasons that current designs still incorporate an element of human control (a "man in the loop") – meaning that a ground controller must authorize weapons release.
Concerns also include the human controller's role, because if they are a civilian and not a member of the military (which is quite possible with developmental and highly sophisticated weapons systems) they would be considered a combatant under international law with which carries a distinct set of responsibilities and consequences. It is for this reason that the "man in the loop" should ideally be a member of the military that understand and accepts their role as combatant.
Current concepts

Dassault nEUROn the stealth "European UCAV technology demonstrator". (official CG concept by Dassault)
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Alenia Aeronautica Sky-X (TD)
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Dassault nEUROn stealth UCAV (TD)
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Denel Aerospace Systems UCAV-TD (TD)
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Israel Aircraft Industries Eitan
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Elbit Systems Hermes 450 (see below)
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EADS Germany EADS Barracuda stealth UAV/UCAV (TD)
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BAE Systems BAE Taranis stealth UCAV (TD)
★ UCAV Version of
Shenyang J-5 ,
J-6 and
J-7
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Mikoyan Skat [1][2]
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DRDO UCAV
[3]
''Note:'' Some of these are not aircraft prototypes but technology demonstrators (TD) that are not expected to enter service.
The French Air Force is also expected to start fielding the
Dassault Neuron by 2010.
The
Israeli Air Force plans to procure a large long-range UCAV that resembles a fighter-jet. The Israeli UCAV, named ''Eitan'', sports a wingspan of 26 meters and a takeoff weight of four tons. The state-owned Israel Aircraft Industries developed the Eitan. Eitan would be a multi-purpose UCAV with automatic takeoff and landing able to locate and destroy mobile ballistic missile launchers in reconnaissance and attack missions.
J-UCAS
Main articles: Joint Unmanned Combat Air Systems
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Boeing X-45 UCAV (TD)
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Northrop-Grumman X-47 Pegasus
The J-UCAS UCAV would use stealth technologies and carry precision-guided weapons such as the
Joint Direct Attack Munition (JDAM) or precision miniature munitions, such as the
Small-Diameter Bomb to suppress enemy air defenses.
Controllers could use real-time data sources, including satellites, to plan for and respond to changes on and around the battlefield.
USAF Hunter-Killer
Main articles: USAF Hunter-Killer
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Scaled Composites Model 395
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Scaled Composites Model 396
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General Atomics MQ-9 Reaper
★ Aurora Flight Sciences/
Israel Aircraft Industries Eagle/Heron 2
★ Unnamed
Lockheed Martin entry
The
United States Air Force has shifted its UCAV program from medium-range
tactical strike aircraft to
long-range strategic bombers.
[3]. The technology of the
Long Range Strike program is based on the
Lockheed Martin Polecat demonstrator.
Elbit Hermes 450
Main articles: Elbit Hermes 450

Elbit Hermes 450 UAV
The
Israeli Air Force, which operates a squadron of
Hermes 450s out of
Palmachim Airbase south of
Tel Aviv, has adapted the Hermes 450 for use as an
assault UAV, reportedly equipping it with two
Hellfire missiles or, according to various sources, two
Rafael-made missiles. According to Israeli, Palestinian, Lebanese and independent reports, the Israeli assault UAV has seen extensive service in the
Gaza Strip and was used intensively in the
Second Lebanon War. Israel has not denied this capability, but to date, its policy has been not to officially confirm it either.
References
1. [1]
2. [2]
3. India joins select group to develop technology for UCAV
External links
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Current Unmanned Vehicles and Systems
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Joint Unmanned Combat Air System (J-UCAS)
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Dassault article on its UAV/UCAV programs
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Saab UAV/UCAV info page
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Unmanned Aerial Systems, Mini UAV
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UCAVs - Panacea or Pipe Dream?
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Chinese UCAV-converted J-5,J-6,J-7
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Israel sets combat drones against missile launchers in Gaza, World Tribune, May 8, 2007
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Israel Starts Reexamining Military Missions and Technology, Aviation Week, August 20, 2006
See also
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History of unmanned aerial vehicles
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History of Unmanned Combat Air Vehicles