2018, down from 550. Rolls confirmed 10 deliveries by the end of October, below the 30 needed for 15 A330neos deliveries by year-end. The A330-900 was initially cleared for 180 min ETOPS with a limitation of 500 engine cycles for the first delivery to TAP Portugal on 26 November. Full ETOPS required an EASA approval plan with a 3,000 cycles validation test plus three simulated diversions followed by disassembly and examination before the end of December. ETOPS 330 was secured by 20 December. In 2019, Rolls-Royce delivered 106 Trent 7000s, up from eight in 2018, while it achieved a 99.9% dispatch reliability. Design Its architecture comes from the latest version of the Trent 1000, the TEN, using the A330's Trent 700 experience and technology from the Trent XWB. The engine doubles the bypass ratio and halves emitted noise compared to the Trent 700. Maximum pressure ratio is increased to 50:1 from 36:1 and it has a bleed air system for environmental control and wing anti-icing. Compared to the 20-year-older Trent 700 introduced in 1995, the Trent 7000 features a smaller fan hub and a larger fan — compared to . This doubles the bypass ratio from 5 to 10. It has the highest bypass ratio of any Trent engine. The fan has 20 blades. The overall pressure ratio increases thanks to Trent XWB core compressor technology, improving thermal efficiency. This is associated with a 200-Kelvin increase in internal temperatures; Thermally-coated high-pressure turbine blades are used instead of the more expensive ceramic matrix composites, which are used in the next Rolls-Royce engine generation, Ultrafan. The larger fan and higher bypass ratio require two more stages in the low-pressure turbine; the engine is heavier. The Trent 700 weighs : while the Trent 7000 weighs , more. Despite the additional weight and the extra drag resulting from the wider diameter, Rolls-Royce reported fuel consumption would improve by 11%. Since bleed air is used instead of electrical power generation (as in the 787's Trent 1000), the IP accessory drive is less loaded and enables the high-pressure compressor to maintain stability at low power settings, improving low-speed fuel consumption for short-haul operations. The engine features active turbine clearance control providing the optimal level of cooling air for different phases of flight. At take-off, the fan displaces up to of air per second, the jet nozzle velocity is almost and each high pressure turbine blade generates