Unmanned aircraft system simulation focuses on training pilots (or operators) to control an unmanned aircraft or its payload from a control station. Flight simulation involves a device that artificially re-creates aircraft flight and the environment in which it flies for pilot training, design, or other purposes. It includes replicating the equations that govern how aircraft fly, how they react to applications of flight controls, the effects of other aircraft systems, and how the aircraft reacts to external factors such as air density, turbulence, wind shear, cloud, precipitation, etc.
Manned simulation is used for a variety of reasons, including flight training (mainly of pilots), the design and development of the aircraft itself, and research into aircraft characteristics and control handling qualities. [1] Unlike manned simulation, unmanned aircraft system (UAS) simulation does not involve a pilot aboard the training device.
Manned flight simulators employ various types of hardware and software, depending on the modeling detail and realism that is required for the role in which they are to be employed. Designs range from PC laptop-based models of aircraft systems (called Part Task Trainers or PTTs), to replica cockpits for initial familiarization, to highly realistic simulations of the cockpit, flight controls and aircraft systems for more complete pilot training. [2]
The use of unmanned systems by defense forces globally has grown substantially over the past decade, and is only expected to continue to grow significantly. In addition, unmanned systems will be used increasingly for commercial applications such as remote inspection of pipelines and hydroelectric installations, surveillance of forest fires, observation of critical natural resources, assessing natural disasters and a range of other applications. This increase in the use of UAS capabilities results in the need to have more highly skilled UAS pilots, sensor operators, and mission commanders. [3]
An unmanned aerial vehicle (UAV), commonly known as a drone and referred to as a Remotely Piloted Aircraft (RPA) by the International Civil Aviation Organization (ICAO), is an aircraft without a human pilot aboard. Its flight is controlled either autonomously by onboard computers or by the remote control of a pilot on the ground or in another vehicle. The typical launch and recovery method of an unmanned aircraft is by the function of an automatic system or an external operator on the ground. [4] Historically, UAVs were simple remotely piloted aircraft, but autonomous control is increasingly being employed. [5] A UAS is composed of the UAV, itself, as well as associated launch, recovery, and control hardware and software.
UAVs are usually deployed for military and special operation applications, but are also used in a small but growing number of civil applications, such as policing and firefighting, and nonmilitary security work such as surveillance of pipelines. UAVs are often preferred for missions that are too "dull, dirty or dangerous" for manned aircraft. [6]
UAS Simulation Training allows UAV operators to train in real-time to operate UAVs in a virtual environment that is realistic and accurate, but without the risks and constraints of a real flight. UAS simulation includes:
UAS Simulation Training combines an open architecture with commercial-off-the-shelf hardware and simulation software that helps the use of proprietary designs to provide a comprehensive, platform-agnostic training system. Customers benefit from greater flexibility for evolution, networking, distributed mission training and combination within an integrated training environment. UAS is a solution that optimizes operational readiness while minimizing the use of live assets to train and prepare the integrated mission team for operations. The comprehensive solution also prepares the integrated mission team (pilot, payload specialist, and commanding officer) in platform operating procedures, data interpretation and analysis, and team interaction. [3]
Potential Air Force UAS pilots and sensor operators attend three and a half months of specialized training courses, most of which is simulated. [8] In simulated training for the Predator, operators use a manual control stick, rudder system and monitor system that is the same as the live simulator. The Air Force's primary UAS training bases are at Holloman Air Force Base, NM, Cannon AFB, NM, Ellsworth AFB, SD, and Whiteman AFB, MO, but will take initial flight training in Pueblo, CO. [9]
Army soldiers receive training on smaller, easier to maneuver UAS, such as the Raven and Puma, from master trainers. Master trainers are selected from bases around the world and are given instruction at Ft. Benning, GA. [10] These master trainers then train units at their home base. Army operators for larger UAS, such as the Shadow and Gray Eagle, conduct training in Fort Huachuca, AZ because of its remote location. [10] These operators are UAS fight specialist for a single specific model. This is due to the different capabilities and functions of each air craft. [10] Training is a combination of live and simulated training to teach new operators. Training is easily simulated because it is almost the same experience as live training in the aircraft that is operated by a Ground Control Station (GCS). [10]
The standard for the Navy was to use pilots who have completed at least one piloting tour before allowing training in operating a UAS. With the advancement and economy of simulators, the Navy is beginning to train enlisted personnel with flight experience to become operators. [11] Capt. Patrick Smith, a Fire Scout program manager was quoted to state, “Ideally, we take [potential operators] from the SH-60 SeaHawk community and add them to the five-week program, mainly simulator-based." [11] The Navy conducts UAS training in Ft. Huachuca, AZ for live simulation or military installations near Patuxent River, MD for the Fire Scouts. [11]
In 2014, Marines that complete the Basic School Officer course in Quantico, VA, will have taken training in small UAS (Raven and Puma). [12] UAS are not widely used in the Marines, [12] but as the UAS become smaller and more mobile, they will become more integrated in mission resources. Marines recently started to receive training from the Group I (under 20 pounds) UAS Training and Logistics Support Activity in Camp Lejeune, NC. [13]
UAS in inventory for each branch of service:
Firefighters, police, miners, and weather researchers are now using UAVs (commonly referred to as drones), which were first used in military sectors. The drones used by police and firefighters are the same type of drones; however, they are used for different purposes. UAVs have gone beyond the human capacity of lifting heavy loads, performing daring photography amidst a heavy storm, and digitizing images that can be converted into 3D maps.
Weather researchers use different drones to help predict weather, photograph storms and measure temperature. Drones are very essential for weather crews in predicting wind speed and temperature, wind direction, air temperature and pressure (Aerosonde Mark 4). [15] Other drones are used for taking images of storm systems, even inside the storm itself. [16] Like the Mark 4, NASA's Global Hawk is used to measure air temperature, wind speed, and pressure, but unlike the Mark 4, it can take images of the storm system. [16] [17]
In mining, drones help miners with tasks such as inspection and maintenance, carrying heavy equipment, and even carrying out tasks 24 hours a day/7 days a week. The mining industry uses drones such as Responder and Serenity to assist mining crews with maintenance, inspection, and imagery. [15] Some drones within the mining industry assist workers with photography of the sediments to be mined so it can be calculated in terms of volume for removal and the stockpile of sediment graded by workers. [18]
In police forces, drones are used for bomb detonation, response to incidents, pursuing criminals in the air, and determining a suspect's location using high tech camera systems (Viking 400-S). [19] Other uses for drones in police sectors are to record incidents, create maps of the incidents in 3D models, and then later send them to officers’ smart phones (Sensefly eBee). [19] Other drones, such as the Kaman drop supplies and equipment for officers, as well as transport officers to and back from the crime scene. The E300 is used to stop criminals and record an incident. [19]
Firefighters use the same drones, but for different purposes. For example, ELIMCO's E300 is used to put out fires, the Viking 400-S uses a camera to photograph incidents, then later transmits the images back to firefighting personnel for mapping the incidents electronically. [20] The Information Processing Systems’ MCV, like the E300 is used for putting out wildfires and man-made fires. [20] The eBee, like its police variant takes photographs with a 16 MP camera, which is used to create 3D models of maps through integrating technology from Google Maps. It is later sent to firefighting personnel smart phones. The Kaman, like its police variant, is used to supply firefighters and victims of fires, and to provide medical assistance. [20] The Defikopter sends defibrillators to victims of heart attack. To locate a victim, it uses a GPS system. [17]
There are two primary roles or purposes for UAS in higher education:
At the University of North Dakota (UND) Bachelor of Science in Aeronautics program, simulators are used for both operator certification and research purposes. [21] For operator certification, UND uses Original Equipment Manufacturer (OEM) simulators specific to a particular vehicle (e.g., ScanEagle, MQ-8, etc.). Actual qualification training is on hold until the Federal Aviation Administration (FAA) puts standards in place for the use of UAS in United States airspace. However, students can learn basic operation principles and how UAS will function in national airspace. UND also conducts research funded by the Air Force Research Laboratory on task loading of UAS operators. This research compares single operators versus multi-operator crews and full auto-piloted systems versus remotely piloted systems.
Embry-Riddle Aeronautical University in Daytona Beach, FL uses simulators in an undergraduate UAS operator program awarding a Bachelor of Science degree in Unmanned Aircraft Systems Science. [22] Primarily, this program trains UAS operators, but it also serves a research role to test the application of UAS in national airspace.
Several other schools offer non-engineering based UAS undergraduate programs, of which simulators are an integral part. Some examples include:
UAV Simulators generally focus on low-level flight control and coordination by using complex physics-based models that are geared towards accuracy. These simulators requires domain expertise and complex knowledge to build, learn and operate the simulator itself. [26] [27] Alternate simulators are being developed such as Agent Based Modeling and Simulation for UAS, especially by military. [28]
Agent based modeling and simulation of UAV focuses on specialized issues such as coordination and planning. For example, the CoUAV. [29] simulator focuses on cooperative search and MAS-Planes [30] focuses on request servicing by decentralized coordination. Agent based simulation has also been used for UAV flight dynamic simulation modeling. [31]
Agent based modeling and simulation has been used for managing missions for UAS. [32] [33] The authors used Codarra Avatar for their experiments. Codarra Avatar is a lightweight UAV which has been specifically built for small-scale reconnaissance and surveillance missions. This UAV can be assembled and disassembled very quickly and transported in a backpack. However, in becoming an autonomous UAV, the Codarra Avatar faces challenges of flight time, flight range, durability, limited computational power, limited sensory data, and flight regulations and restrictions. The authors developed Agent-Flight Control System Architecture (FCS) to combat the issues faced with the UAV.
FCS has an agent that sits at the top of a control tree, receives data at regular intervals, and issues high level waypoint commands. The agent is designed in JACK, an agent-oriented programming language. The behavior of agents defined using JACK are structured around the BDI (Belief, Desire, Intentions) theory of agency. The mission Management System is designed using the OODA (Observe, Orient, Decide, Act) Approach that was developed by Colonel John Boyd. Authors conducted successful tests in Melbourne, Australia, using an FCS Architecture on the Codarra Avatar UAV. [33]
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.
The Northrop Grumman RQ-4 Global Hawk is a high-altitude, remotely-piloted, 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.
The IAI RQ-5 Hunter unmanned aerial vehicle (UAV) was originally intended to serve as the United States Army's Short Range UAV system for division and corps commanders. It took off and landed on runways. It used a gimbaled EO/IR sensor to relay its video in real time via a second airborne Hunter over a C-band line-of-sight data link. The RQ-5 is based on the Hunter UAV that was developed by Israel Aerospace Industries.
The AAI RQ-7 Shadow is an American unmanned aerial vehicle (UAV) used by the United States Army, Australian Army, Swedish Army, and Italian Army for reconnaissance, surveillance, target acquisition and battle damage assessment. Launched from a trailer-mounted pneumatic catapult, it is recovered with the aid of arresting gear similar to jets on an aircraft carrier. Its gimbal-mounted, digitally stabilized, liquid nitrogen-cooled electro-optical/infrared (EO/IR) camera relays video in real time via a C-band line-of-sight data link to the ground control station (GCS).
An unmanned aerial vehicle (UAV) is an aircraft without a human pilot on board. 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 referred to as an autopilot.
UAV ground control station (GCS) is a land- or sea-based control centre that provides the facilities for human control of Unmanned Aerial Vehicles. It may also refer to a system for controlling rockets within or above the atmosphere, but this is typically described as a Mission Control Centre.
AAI Corporation is an aerospace and defense development and manufacturing firm, located in Hunt Valley, Maryland, US. Formerly a wholly owned subsidiary of United Industrial Corporation, AAI was acquired by Textron in 2007. It currently operates as a unit of Textron Systems and employs more than 2,000.
A miniature UAV, small UAV (SUAV), or drone is an unmanned aerial vehicle small enough to be man-portable.
The AeroVironment RQ-11 Raven is a small hand-launched remote-controlled unmanned aerial vehicle developed for the United States military, but now adopted by the military forces of many other countries.
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.
Marine Unmanned Aerial Vehicle Squadron 2 (VMU-2) is an unmanned aerial vehicle squadron in the United States Marine Corps that operates the RQ-21A Blackjack. The RQ-21A is the military variant of the commercial Boeing Insitu Integrator The squadron is based at Marine Corps Air Station Cherry Point in Havelock, North Carolina and it provides aerial surveillance, offensive air support, and electronic warfare for the II Marine Expeditionary Force. They fall under the command of Marine Aircraft Group 14 and the 2nd Marine Aircraft Wing.
The AeroVironment RQ-20 Puma is a small, battery powered, American, hand-launched unmanned aircraft system produced by AeroVironment based in California. Primary mission is surveillance and intelligence gathering using an electro-optical and infrared camera.
The Boeing Insitu RQ-21 Blackjack, formerly called the Integrator, is an American unmanned air vehicle designed and built by Boeing Insitu to meet a United States Navy requirement for a small tactical unmanned air system (STUAS). It is a twin-boom, single-engine monoplane, designed as a supplement to the Boeing Scan Eagle. The Integrator weighs 61 kg (134 lb) and uses the same launcher and recovery system as the Scan Eagle.
The GIDS Uqab is a tactical unmanned reconnaissance aerial vehicle built and developed by the Global Industrial Defence Solutions (GIDS) for the joint drone program of the Pakistan Navy and Pakistan Army. The Uqab is a tactical system which can be used for damage assessment, reconnaissance operations, artillery fire corrections, and can perform other variety of security and military operations.
Kongsberg Geospatial is a Situational Awareness and Geospatial Visualization software company located in Ottawa, Ontario, Canada. It was founded in 1992 as Gallium Visual Systems Inc. and purchased in 2006 by Norwegian Defence firm Kongsberg Gruppen. It currently operates as a subsidiary of Kongsberg Defence & Aerospace and in 2012, officially changed its name to Kongsberg Gallium Ltd. In 2016, the company changed its name again to Kongsberg Geospatial.
The US Federal Aviation Administration has adopted the name unmanned aircraft (UA) to describe aircraft systems without a flight crew on board. More common names include UAV, drone, remotely piloted vehicle (RPV), remotely piloted aircraft (RPA), and remotely operated aircraft (ROA). These "limited-size" unmanned aircraft flown in the USA's National Airspace System, flown solely for recreation and sport purposes, such as models, are generally flown under the voluntary safety standards of the Academy of Model Aeronautics, the United States' national aeromodeling organization. To operate a UA for non-recreational purposes in the United States, according to the FAA users must obtain a Certificate of Authorization (COA) to operate in national airspace. In December 2015 the FAA announced that all UAVs weighing more than 250 grams flown for any purpose must be registered with the FAA and in December 2019, the FAA proposed a ruling requiring all unmanned aircraft systems (UAS) to be equipped with a device to identify them citing “All UAS operating in the airspace of the United States, with very few exceptions, would be subject to the requirements of this rule".
The use of unmanned aerial vehicles (UAVs) or Drones, is generally regulated by the national aviation authority of the country.
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 MQ-1 Predators and MQ-1C Gray Eagles; 126 MQ-9 Reapers; 491 RQ-7 Shadows; and 33 RQ-4 Global Hawk large systems.