Project CHLOE

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Project CHLOE is a research and development program of the Department of Homeland Security (DHS) to explore technology-based unmanned aerial vehicle (UAV) mounted defenses for airports and airliners against the threat of infrared man-portable anti-aircraft missiles. The project's name refers to the character Chloe O'Brian on the television show 24 , which is Former Homeland Security Secretary Michael Chertoff's favorite show. [1] [2]

Unmanned aerial vehicle Aircraft without a human pilot aboard

An unmanned aerial vehicle (UAV), commonly known as a drone, is an aircraft without a human pilot onboard. UAVs are a component of an unmanned aircraft system (UAS); which include a UAV, a ground-based controller, and a system of communications between the two. The flight of UAVs may operate with various degrees of autonomy: either under remote control by a human operator or autonomously by onboard computers.

Infrared homing

Infrared homing is a passive weapon guidance system which uses the infrared (IR) light emission from a target to track and follow it. Missiles which use infrared seeking are often referred to as "heat-seekers", since infrared is radiated strongly by hot bodies. Many objects such as people, vehicle engines and aircraft generate and emit heat, and as such, are especially visible in the infrared wavelengths of light compared to objects in the background.

Surface-to-air missile Ground-launched missile designed to attack aerial targets

A surface-to-air missile (SAM), or ground-to-air missile, is a missile designed to be launched from the ground to destroy aircraft or other missiles. It is one type of antiaircraft system; in modern armed forces, missiles have replaced most other forms of dedicated antiaircraft weapons, with anti-aircraft guns pushed into specialized roles.

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Concept

The primary concept being explored by Project CHLOE is to have a UAV circling at 65,000 ft (20,000 m) above a major airport which is equipped for the dual role of detecting and defeating a heat-seeking missile launched against an airliner. [1] [2] Other systems, such as the Northrop Grumman Guardian, CAMPS and Flight Guard have been developed which would be mounted on individual commercial aircraft, but such systems can cost upwards of US$1 million per plane, and airlines would prefer a more workable and affordable solution over using equipment that they have to both pay for and then maintain. [2] The program is the result of a congressional directive to the DHS to explore technology options parallel with the development of aircraft-mounted systems. [3]

Northrop Grumman Guardian

The Northrop Grumman Guardian is a passive anti-missile countermeasure system designed specifically to protect commercial airliners from shoulder-launched missiles, using directed infrared countermeasures (DIRCM) technology.

Flight Guard is an Elta Systems Ltd's brand name for a family of airborne systems for protecting civilian aircraft against man-portable air-defense systems.

The proposed UAVs would have a long loiter time, up to 24 hours per flight, so that there would be a "perpetual orbit", [4] of an aircraft above an airport. The system would have all-weather capabilities [5] to scan a threat envelope of a 3-mile (4.8 km) radius around the airport, and air traffic up to an altitude of 18,000 ft (5,500 m), plus standard approach and departure corridors up to 65 mi (105 km) from airports. [3] [5] The system would be required to respond to a threat within three to ten seconds. [5] It would also have to be unaffected by ground clutter which could mimic the signature of a missile launch. [5] "One of these devices flying above 60,000 ft (18,000 m) would cover all of the commercial airports in the L.A. County area," said Admiral Jay M. Cohen, DHS' technology chief. [2]

Jay M. Cohen American admiral

Jay Martin Cohen is a retired Rear Admiral of the United States Navy and former Under Secretary of Homeland Security for Science and Technology of the United States Department of Homeland Security.

Development

Program objectives

According to DHS literature, there are three objectives to Project CHLOE development. The first is to "investigate and demonstrate the feasibility of persistent stand-off Counter-MANPADS protection". [5] This includes using one or more UAVs stationed over airports which are equipped with both warning systems and countermeasures systems, or using UAVs networked with ground-based countermeasures. The UAVs would be autonomous in their flight and detection operations.

The second objective is to "investigate and demonstrate DHS missions and payloads that are compatible with CHLOE technology platform and operating environment." These secondary roles for the UAVs would include emergency and disaster relief support, support of the Customs and Border Patrol and Coast Guard for border and maritime surveillance and interdiction, and critical infrastructure monitoring. [5]

The third objective is integrate such technologies into the air traffic control system and other law enforcement agencies for overall situational awareness. [5]

Air traffic control A public service provided for the purpose of maintaining the safe and orderly flow of air traffic

Air traffic control (ATC) is a service provided by ground-based air traffic controllers who direct aircraft on the ground and through controlled airspace, and can provide advisory services to aircraft in non-controlled airspace. The primary purpose of ATC worldwide is to prevent collisions, organize and expedite the flow of air traffic, and provide information and other support for pilots. In some countries, ATC plays a security or defensive role, or is operated by the military.

Hardware development

The development program has a reported budget of US$12.7 million. [3] The countermeasures systems are to be tested on drones operating over the Patuxent River Naval Air Station. [1] DHS has proposed testing on one of several existing UAVs, the RQ-4 Global Hawk, the RQ-9 Reaper or the Altair (NASA's version of the Reaper). DHS also suggested the use of a manned surrogate aircraft, either the Scaled Composites Proteus, a Lockheed ER-2 or a modified Gulfstream G550. [5]

Also included in the study is the means of implementing the system at a number of key U.S. airports, including Denver International Airport, Los Angeles International Airport, San Diego International Airport, McCarran International Airport, Newark Liberty International Airport and Ronald Reagan Washington National Airport. [3]

Concerns

Civilian pilot groups have expressed concern about impact of drone operations in civilian airspace, especially during takeoff and landing. [1] During the actual loitering, the drones will not be a factor to civilian air traffic, since they will be above the national airspace. [4]

DHS is also addressing concerns about the danger to people on the ground from lasers being directed downward, as well as concerns over a falling defeated missile. [2] [5]

Related Research Articles

General Atomics MQ-1 Predator Family of unmanned aerial vehicles

The General Atomics MQ-1 Predator is an American remotely piloted aircraft (RPA) built by General Atomics that was used primarily by the United States Air Force (USAF) and Central Intelligence Agency (CIA). Initially conceived in the early 1990s for aerial reconnaissance and forward observation roles, the Predator carries cameras and other sensors. It was modified and upgraded to carry and fire two AGM-114 Hellfire missiles or other munitions. The aircraft entered service in 1995, and saw combat in the war in Afghanistan, Pakistan, the NATO intervention in Bosnia, Serbia, the Iraq War, Yemen, the 2011 Libyan civil war, the 2014 intervention in Syria, and Somalia.

Northrop Grumman RQ-4 Global Hawk Unmanned surveillance aircraft

The Northrop Grumman RQ-4 Global Hawk is an unmanned (UAV) surveillance aircraft. It was initially designed by Ryan Aeronautical, and known as Tier II+ during development. The Global Hawk performs duties similar to that of the Lockheed U-2. The RQ-4 provides a broad overview and systematic surveillance using high-resolution synthetic aperture radar (SAR) and long-range electro-optical/infrared (EO/IR) sensors with long loiter times over target areas. It can survey as much as 40,000 square miles (100,000 km2) of terrain a day, an area the size of South Korea or Iceland.

Aircraft pilot person controlling an aircraft in flight

An aircraft pilot or aviator is a person who controls the flight of an aircraft by operating its directional flight controls. Some other aircrew members, such as navigators or flight engineers, are also considered aviators, because they are involved in operating the aircraft's navigation and engine systems. Other aircrew members, such as flight attendants, mechanics and ground crew, are not classified as aviators.

Unmanned combat aerial vehicle unmanned aerial vehicle that is usually armed

An unmanned combat aerial vehicle (UCAV), also known as a combat drone or simply a drone, is an unmanned aerial vehicle (UAV) that usually carries aircraft ordnance such as missiles and is used for drone strikes. These drones are usually under real-time human control, with varying levels of autonomy. Aircraft of this type have no onboard human pilot. As the operator runs the vehicle from a remote terminal, equipment necessary for a human pilot are not needed, resulting in a lower weight and a smaller size than a manned aircraft. China, Israel, and the United States are widely recognized as industry leaders in UCAV technology. Several other countries have operational domestic UCAVs and many more have imported armed drones or have development programs under way.

Man-portable air-defense system Portable surface-to-air missile weapons

Man-portable air-defense systems are portable surface-to-air missiles. They are guided weapons and are a threat to low-flying aircraft, especially helicopters.

History of unmanned aerial vehicles aspect of history

UAVs include both autonomous drones and remotely piloted vehicles (RPVs). A UAV is capable of controlled, sustained level flight and is powered by a jet, reciprocating, or electric engine. In the 21st century, technology reached a point of sophistication that the UAV is now being given a greatly expanded role in many areas of aviation.

Infrared countermeasure countermeasure

An infrared countermeasure (IRCM) is a device designed to protect aircraft from infrared homing missiles by confusing the missiles' infrared guidance system so that they miss their target. Heat-seeking missiles were responsible for about 80% of air losses in Operation Desert Storm. The most common method of infrared countermeasure is deploying flares, as the heat produced by the flares creates hundreds of targets for the missile.

General Atomics MQ-9 Reaper Unmanned reconnaissance and strike aircraft system

The General Atomics MQ-9 Reaper is an unmanned aerial vehicle (UAV) capable of remotely controlled or autonomous flight operations developed by General Atomics Aeronautical Systems (GA-ASI) primarily for the United States Air Force (USAF). The MQ-9 and other UAVs are referred to as Remotely Piloted Vehicles/Aircraft (RPV/RPA) by the USAF to indicate their human ground controllers.

Civil Aircraft Missile Protection System or CAMPS is an infrared countermeasure against infrared-homed anti-aircraft missiles, specifically designed to defend civilian aircraft flying under 15,000 feet (4,600 m) against MANPADS.

Missile approach warning system

A missile approach warningsystem (MAW) is part of the avionics package on some military aircraft. A sensor detects attacking missiles. Its automatic warning cues the pilot to make a defensive maneuver and deploy the available countermeasures to disrupt missile tracking.

The Vigilant Eagle Airport Protection System is a proposed directed-energy weapon under development by the U.S. military under a Defense Department contract with Raytheon. It would create an invisible microwave dome around an airport that could block missiles heading toward incoming and outgoing aircraft.

Lockheed Martin RQ-170 Sentinel unmanned aerial vehicle by Lockheed Martin

The Lockheed Martin RQ-170 Sentinel is an American unmanned aerial vehicle (UAV) developed by Lockheed Martin and operated by the United States Air Force for the Central Intelligence Agency (CIA). While the USAF has released few details on the UAV's design or capabilities, defense analysts believe that it is a stealth aircraft fitted with aerial reconnaissance equipment.

Iran–U.S. RQ-170 incident

On 5 December 2011, an American Lockheed Martin RQ-170 Sentinel unmanned aerial vehicle (UAV) was captured by Iranian forces near the city of Kashmar in northeastern Iran. The Iranian government announced that the UAV was brought down by its cyberwarfare unit which commandeered the aircraft and safely landed it, after initial reports from Western news sources disputedly claimed that it had been "shot down". The United States government initially denied the claims but later President Obama acknowledged that the downed aircraft was a US drone and requested that Iran return it.

The Switchblade is a loitering munition developed by AeroVironment. It is designed as a "kamikaze," being able to crash into its target with an explosive warhead to destroy it. The Switchblade is small enough to be carried in a backpack and can be launched from a variety of ground, maritime, and air platforms.

The Northrop Grumman RQ-180 is an American stealth unmanned aerial vehicle (UAV) surveillance aircraft intended for contested airspace which has been described in several news articles and confirmed by the U.S. Air Force.

The Information Age is generally understood to have arrived with the Internet as it was developed through the 1970s and rolled out throughout the 1980s, and continues evolving to this day. So too the adoption of digital techniques in aviation also arrived progressively at around the same time and also continues today.

As of January 2014, the U.S. military operates a large number of unmanned aerial systems : 7,362 RQ-11 Ravens; 990 AeroVironment Wasp IIIs; 1,137 AeroVironment RQ-20 Pumas; and 306 RQ-16 T-Hawk small UAS systems and 246 Predators and MQ-1C Grey Eagles; 126 MQ-9 Reapers; 491 RQ-7 Shadows; and 33 RQ-4 Global Hawk large systems.

The Orion is a Medium-altitude long-endurance unmanned aerial vehicle (UAV) developed by Aurora Flight Sciences.

Loitering munition

A loitering munition is a weapon system category in which the munition loiters around the target area for some time, searches for targets, and attacks once a target is located. Loitering munitions enable faster reaction times against concealed or hidden targets that emerge for short periods without placing high-value platforms close to the target area, and also allow more selective targeting as the actual attack mission can be aborted.

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