The Adour is a turbofan engine developed primarily to power the Anglo-French SEPECAT Jaguar fighter-bomber, achieving its first successful test run in 1968. It is produced in versions with or without reheat. As of July 2009 more than 2,800 Adours have been produced, for over 20 different armed forces with total flying hours reaching 8 million in December 2009. The U.S. military designation for this engine is the F405-RR-401, which is currently used to power the fleet of Boeing / BAE SystemsT-45 Goshawk trainer jets of the United States Navy.
Adour Mk 101 - First production variant for the Jaguar, 40 built.
Adour Mk 102 - Second production variant with the addition of part-throttle reheat.
Adour Mk 104 - Much more powerful version available in early '80s, with higher operating temperature, capable of about 5,500 kgf dry and 8,000 lb with max A/B. While it was only marginally better in military thrust at take off, this engine improved the Jaguar’s low power-to weight ratio and enabled much better performance, with 10% more thrust at take off, and up to 27% more thrust in high subsonic cruise, helping the Jaguar in its typical flight envelope.
Adour Mk 106 - Replacement for the Jaguar's Mk104 engine with a reheat section. The RAF refitted its fleet with this engine as part of the GR3 upgrade. In May 2007, following the retirement of the last 16 Jaguars from No. 6 Squadron RAF, based at RAF Coningsby, the Adour 106 has been phased out of RAF service.
Adour Mk 811 - Licence-built by HAL for Indian Air Forcephase 3 to 6 Jaguars; rated at 8400 lbs of maximum thrust. BAe-built Jaguars were initially powered with two Adour 804E turbofans.
Adour Mk 821 - Engine upgrade of Mk804 and Mk811 engines, was under development for the Indian Air Force Jaguar aircraft.
F405-RR-401 - Similar configuration to Mk 871, for US Navy T-45 Goshawk.
Adour Mk 951 - Designed for the latest versions of the BAE Hawk and powering the BAE Taranis and Dassault nEUROnUCAV technology demonstrators. The Adour Mk 951 is a more fundamental redesign than the Adour Mk 106, with improved performance and up to twice the service life of the 871. It features an all-new fan and combustor, revised HP and LP turbines, and introduces Full Authority Digital Engine Control. The Mk 951 was certified in 2005.
F405-RR-402 - Upgrade of F405-RR-401, incorporating Mk 951 technology, certified 2008. Did not enter into service due to funding issues.
Higher bypass
A high-bypass engine built around the core of the Adour and intended as a Spey replacement was developed by Rolls-Royce in 1967 as the Rolls-Royce RB.203 Trent.
