Eurofighter Typhoon Fighter Jet
The Eurofighter Typhoon is a twin-engine, canard-delta wing, multirole fighter. The Typhoon was designed by a consortium of three companies: EADS, Alenia Aeronautica and BAE Systems; working through a holding company, Eurofighter GmbH, which was formed in 1986. The project is managed by the NATO Eurofighter and Tornado Management Agency, which acts as the prime customer. Eurofighter Typhoon is being produced serially by the EADS, Alenia Aeronautica, and BAE Systems consortium. The aircraft is being procured under separate contracts, named tranches, each for aircraft with generally improved capabilities. The Typhoon has entered service with the Austrian Air Force, the Italian Air Force, the German Luftwaffe, the British Royal Air Force, the Spanish Air Force, and the Royal Saudi Air Force.
The Typhoon is a highly agile aircraft at both supersonic and low speeds, achieved through having an intentionally relaxed stability design. It has a quadruplex digital fly-by-wire control system providing artificial stability, manual operation alone could not compensate for the inherent instability. The fly-by-wire system is described as "carefree", and prevents the pilot from exceeding the permitted manoeuvre envelope. Roll control is primarily achieved by use of the wing flaperons. Pitch control is by operation of the foreplanes and flaperons, the yaw control is by rudder. Control surfaces are moved through two independent hydraulic systems that are incorporated in the aircraft, which also supply various other items, such as the canopy, brakes and undercarriage; powered by a 4000 psi engine-driven gearbox.
The Eurofighter Typhoon features a glass cockpit without any conventional instruments. It incorporates three full colour multi-function head-down displays (MHDDs) (the formats on which are manipulated by means of softkeys, XY cursor, and voice (Direct Voice Input or DVI) command), a wide angle head-up display (HUD) with forward-looking infrared (FLIR), a voice and hands-on throttle and stick (Voice+HOTAS), a Helmet Mounted Symbology System (HMSS), a Multifunctional Information Distribution System (MIDS), a manual data-entry facility (MDEF) located on the left glareshield and a fully integrated aircraft warning system with a dedicated warnings panel (DWP). Reversionary flying instruments, lit by LEDs, are located under a hinged right glareshield.
The Typhoon Direct Voice Input (DVI) system utilises a speech recognition module (SRM), developed by Smiths Aerospace (now GE Aviation Systems) and Computing Devices (now General Dynamics UK). It was the first production DVI system utilised in a military cockpit. DVI provides the pilot with an additional natural mode of command and control over approximately 26 non-critical cockpit functions, to reduce pilot workload, improve aircraft safety, and expand mission capabilities. An important step in the development of the DVI occurred in 1987 when Texas Instruments completed the TMS-320-C30, a digital signal processor, enabling reductions in the size and system complexity required. The project was given the go ahead in July 1997, with development and pilot assessment carried out on the Eurofighter Active Cockpit Simulator at BAE Systems Warton.