Question: Byelka was devoped for an aircraft which was a product of what?
Context: Aviamilano Costruzione Aeronautiche was an Italian aircraft manufacturer established in Milan in the early 1950s.  It was the original manufacturer of Stelio Frati's Falco light aircraft, although when production did not run as smoothly as Frati liked, he took the design to Aeromere instead.  Aviamilano's staple product was the Scricciolo trainer built for the Aero Club d'Italia from 1959 onwards.  The firm's final product was another Frati design, the F.250, rights to which were sold to SIAI-Marchetti in 1964.  The firm closed in 1968 after the death of its Managing Director and the rights to the few sailplanes then in production were bought by Caproni Vizzola. The Institution of Engineering Designers (IED) is a British professional engineering institution founded in 1945.  The IED is the UK’s only professional body representing those working in the fields of Engineering and Technological Product Design.  The membership of the institution work in a diverse range of industries that include: product design and manufacturing; architectural design and construction; mechanical, automotive and aircraft design, design education, IT and computing.  The IED is licensed to award three Charterships, including Chartered Technological Product Designer. Network Centric Product Support (NCPS) is an early application of an Internet of Things (IoT) computer architecture developed to leverage new information technologies and global networks to assist in managing maintenance, support and supply chain of complex products made up of one or more complex systems, such as in a mobile aircraft fleet or fixed location assets such as in building systems.  This is accomplished by establishing digital threads connecting the physical deployed subsystem with its design Digital Twins virtual model by embedding intelligence through networked micro-web servers that also function as a computer workstation within each subsystem component (i.e. Engine control unit on an aircraft) or other controller and enabling 2-way communications using existing Internet technologies and communications networks - thus allowing for the extension of a product lifecycle management (PLM) system into a mobile, deployed product at the subsystem level in real time.  NCPS can be considered to be the support flip side of Network-centric warfare, as this approach goes beyond traditional logistics and aftermarket support functions by taking a complex adaptive system management approach and integrating field maintenance and logistics in a unified factory and field environment.  Its evolution began out of insights gained by CDR Dave Loda (USNR) from Network Centric Warfare-based fleet battle experimentation at the US Naval Warfare Development Command (NWDC) in the late 1990s, who later lead commercial research efforts of NCPS in aviation at United Technologies Corporation.  Interaction with the MIT Auto-ID Labs, EPCglobal, the Air Transport Association of America ATA Spec 100/iSpec 2200 and other consortium pioneering the emerging machine to machine Internet of Things (IoT) architecture contributed to the evolution of NCPS. Quest Aircraft Company is a Japanese-owned aircraft manufacturer located in Sandpoint, Idaho, United States.  Quest was started in 2001 to design and provide aircraft suitable for domestic and international humanitarian applications.  Its sole product is the Kodiak single engine STOL aircraft. The Sukhoi Su-57 (Russian: Сухой Су-57 ) is the designation intended for a stealth, single-seat, twin-engine jet multirole fighter aircraft designed for air superiority and attack operations.  The aircraft is the product of the PAK FA (Russian: ПАК ФА , Russian: Перспективный авиационный комплекс фронтовой авиации , "Perspektivny Aviatsionny Kompleks Frontovoy Aviatsii", literally "Prospective Airborne Complex of Frontline Aviation"), a fifth-generation fighter programme of the Russian Air Force.  Sukhoi's internal name for the aircraft is T-50.  The Su-57 will be the first aircraft in Russian military service to use stealth technology.  The fighter is planned to have supercruise, stealth, supermaneuverability and advanced avionics to overcome the prior generation fighter aircraft as well as ground and maritime defences. N036 Byelka (Russian: Белка , literally Squirrel) is an advanced active electronically scanned array radar system developed by Tikhomirov NIIP for the fifth generation Sukhoi Su-57 fighter aircraft.  NIIP developed the radar from the N035 Irbis-E that was equipped on the Su-35S fighter aircraft. Stewart Aircraft Corporation is an American aircraft manufacturer specializing in aircraft kits and plans.  Don Stewart, a former airline pilot, designed several aircraft that are sold by the company.  The company's first product, the Headwind, was one of the earliest examples of a homebuilt aircraft designed to use an air-cooled Volkswagen automotive engine with a patented gear reduction unit for the propeller. The Shearwater Aircraft Company was an airplane manufacturing corporation registered from 2007-16 in New Zealand and headquartered in Auckland.  Their main product was to be a general aviation amphibious aircraft, to be constructed as a homebuilt aircraft kit, with plans to then develop certified aircraft versions. David Halpert was an inventor of various chemical patents in the 1950s and 1960s relating to surface plating of titanium, aluminum and aluminum base alloys critical for the successful development of the Chinook Helicopter, under the auspices of Vertol Aircraft Corporation, formerly Piasecki Helicopter Corporation, subsequently Boeing Vertol, then Boeing Helicopters, and currently Boeing Rotorcraft Systems, a US aircraft manufacturer, now part of Boeing Defense, Space & Security.  Although Boeing is a known name in the large commercial aircraft industry and defense aircraft manufacturing, its most widely recognized helicopter product has historically been the easily identifiable tandem rotor heavy-lift Boeing Vertol CH-47 Chinook helicopter – one of the few aircraft from the 1950s–1960s still in production, most recently in international news for the 2011 Chinook shootdown in Afghanistan which killed 38 people, including 17 Navy SEALs. Aero Design Associates was a small firm established by aircraft designer David Garber in Opa-locka, Florida in the mid-1970s to produce racing aircraft.  Its sole product was the Aero Design DG-1, an unorthodox aircraft intended to break the world airspeed record for a piston-engined aircraft.
Answer: PAK FA