FADEC

Full authority digital engine (or electronics) control (FADEC) is a system consisting of a digital computer, called an electronic engine controller (EEC) or engine control unit (ECU), and its related accessories that control all aspects of aircraft engine performance. FADECs have been produced for both piston engines and jet engines.

History

The goal of any engine control system is to allow the engine to perform at maximum efficiency for a given condition. Originally, engine control systems consisted of simple mechanical linkages connected physically to the engine. By moving these levers the pilot or the flight engineer could control fuel flow, power output, and many other engine parameters.

Following mechanical means of engine control came the introduction of analog electronic engine control. Analog electronic control varies an electrical signal to communicate the desired engine settings. The system was an evident improvement over mechanical control but had its drawbacks, including common electronic noise interference and reliability issues. Full authority analogue control was used in the 1960s and introduced as a component of the Rolls-Royce/Snecma Olympus 593 engine of the supersonic transport aircraft Concorde. However, the more critical inlet control was digital on the production aircraft.

Royal Thai Navy

The Royal Thai Navy (Thai: กองทัพเรือ) is the navy of Thailand and part of the Royal Thai Armed Forces. It was established in the late 19th century. Admiral Prince Abhakara Kiartiwongse (1880–1923) is "The Father of Royal Thai Navy". Similar to the organisational structure of the United States, the Royal Thai Navy includes the Naval Fleet, and the Royal Thai Marine Corps. The Royal Thai Navy operates out of Sattahip Naval Base in Sattahip Bay. Thailand is the only Southeast Asian country that operates an aircraft carrier, though it is used as a pure helicopter carrier with the retirement of the Harrier fighter wing. Thailand was the 2nd Asian nation to acquire submarines, following Japan; however, no submarines are operated by Thailand currently.

The Royal Thai Navy operates in three Naval Area Commands:

Airbus Helicopters

Airbus Helicopters (formerly Eurocopter Group) is the helicopter manufacturing division of Airbus Group. It is the largest in the industry in terms of revenues and turbine helicopter deliveries. Its head office is located at Marseille Provence Airport in Marignane, France, near Marseille. The main facilities of Airbus Helicopters are at its headquarters in Marignane, France and in Donauwörth, Germany, with additional production plants in Brazil (Itajubá,MG), Australia, Spain and the United States. The company was renamed Airbus Helicopters on 2 January 2014.

History

Airbus Helicopters, then named Eurocopter Group, was formed in 1992 through the merger of the helicopter divisions of Aérospatiale and Daimler-Benz Aerospace AG (DASA). The company's heritage traces back to Blériot and Lioré et Olivier in France and to Messerschmitt and Focke-Wulf in Germany.

Airbus Helicopters and its predecessor companies have established a wide range of helicopter 'firsts,' including the first production turboshaft-powered helicopter (the Aérospatiale Alouette II of 1955); the introduction of the Fenestron shrouded tail rotor (on the Gazelle of 1968); the first helicopter certified for full flight in icing conditions (the AS332 Super Puma, in 1984); the first production helicopter with a Fly-by-wire control system (the NHIndustries NH90, first flown in full FBW mode in 2003); the first helicopter to use a Fly-by-light primary control system (an EC135 testbed, first flown in 2003); and the first ever landing of a helicopter on Mt. Everest (achieved by an AS350 B3 in 2005).