699.67 GBX -10.83 ABOUT CUSTOMERS INVESTORS SUSTAINABILITY CAREERS NEWS About Home | About | Our technology | Gas turbine technology | Combustion Combustion Fuel and air are mixed and burned within the combustion chamber to convert chemical energy of the fuel into thermal energy within the gas-stream prior to entry into the turbines. The needs of the system depend greatly on the application (civil aerospace, military aerospace, marine or power generation). However there are many common themes of technology that span all sectors.| Emissions and pollutant reduction The key discriminating technology of combustion is the generation and control of pollutant emissions - In particular NOx, particulate matter, un-burned hydrocarbons and carbon monoxide. For each product, these are closely regulated and monitored. Rolls Royce has a clearly laid out, long term strategy and commitment to control gaseous emissions. Military combustion The requirements in the military sector are complementary to other business sectors but also have unique elements of their own. The design of the main combustion system is driven far more by constraints of weight and excursions to extremely high fuel:air ratio, which can have implications for stealth. The reheat system or afterburner also requires distinctive technology, being the only application in our business where low pressure combustion is required in vitiated (oxygen reduced) air. Manufacturing technology Research and technology is undertaken in a wide range of areas to improve the productivity of existing processes and to develop new manufacturing processes. The focus of this work is cost reduction and increased design capability. Hot end technology The temperatures within the combustion chamber are amongst the hottest in the engine yet they are still expected to last the many hours of operation between service and overhaul. This requires substantial technology in the form of wall materials (both metallic and ceramic), coatings and manufacturing technology. Our strategy Who we are Where we operate Our technology Vision Gas turbine technology Fans Compressors Combustion Turbines Enabling technologies Manufacturing technology Nuclear technology Materials technology Research Our story Trent XWB - the world's most efficient aero engine Would you like to Work for us? Download annual report Learn about Innovation Speak to Investor relations Speak to a press officer Find out about the AGM 2015 Recent press releases 17 September 2015 Rolls-Royce and Sunseeker agree general contract for supply of MTU engines 15 September 2015 DSEI: Current MTU projects with British Army and Royal Navy at the centre of attention 15 September 2015 Rolls-Royce repeats as US air force superior supplier Connect with us Follow us on Twitter View our latest videos Visit our Facebook page Follow us on LinkedIn Visit our Flickr Stay in touch Sign up to get the latest news CONTACT US  Site map Use of cookies Legal information © Rolls-Royce plc 2015 All rights reserved