Obiettivo During the 3 year interim phase of the programme three selected concepts will be investigated in detail, their potential of NOx reduction will be measured and an evaluation of these methods concerning air worthiness will be performed.Theme I: Rich Burn, Quick Quench, Lean Burn Combustion (RQL) The design and development of a rich burn combustor (RQL) were supported by tubular combustor tests, by flow visualization in perspex models and by extensive measurements in a rectangular sector combustor. The specific problems resulting from extreme temperatures in the rich burning zone and the need for rapid quench in the zone to follow were addressed by a specific cooling task. Theme II: The Lean, Premixed and Prevaporized Combustion (LPP) For the development of a lean premixed, prevaporized combustor (LPP), fundamental investigations were concentrated on prevaporizer ducts and the premix systems. Because of the particular problems caused by reverse flow layout and the requirements for small size and low cost inherent with small engines, the combustor investigations were split into two tasks: ducts for large engines and ducts for small engines. Theme III: The Double Annular Combustor (DAC) The investigations of the double annuar combustor (DAC) such as lean stability, altitude relight, low power efficiency and NOx control, fuel staging and combustor exit temperature distribution were of more basic nature. While these fundamental tests were carried out in low pressure and intermediate pressure rigs, the final configuration experiments were conducted under engine relevant conditions. Theme IV: Validation of CFD-Combustion Models (CFD) The results of selected measurements were added to a common database which could be used to evaluate the tests, compare the different combustor standards and to numerically predict and optimize the behaviour of the different combustors with advanced CFD methods. The results from the Low NOx II programme confirm that assuming the requisite research work is continued in future and the development of appropriate combustors is initiated and progress demonstrated, a reduction of 60 % to 80 % in nitrogen oxides from current levels appears to be feasible by the end of the century.Further objectives of the low emission combustor programme in the interim phase comprise the strengthening of the scientific and technological basis for the development of ultra low NOx combustion methods and the provision of new or improved tools and techniques for analysis, prediction and control of aero engine exhaust emissions. However, the major long term objective for the Low Emission Combustor team is the translation of the best suited concepts into a practical combustor and to test it at engine operating conditions, which requires both a reliable continuation of the research work and sufficient financial support of the partners involved. Campo scientifico natural sciencescomputer and information sciencesdatabasesengineering and technologyenvironmental engineeringenergy and fuels Programma(i) FP3-AERO 1C - Specific programme of research and technological development in the field of industrial and materials technologies - Aeronautics research -, 1990-1994 Argomento(i) Data not available Invito a presentare proposte Data not available Meccanismo di finanziamento CSC - Cost-sharing contracts Coordinatore Motoren- und Turbinen-Union München GmbH (MTU) Contributo UE Nessun dato Indirizzo Dachauer Straße 665 80995 München Germania Mostra sulla mappa Costo totale Nessun dato Partecipanti (18) Classifica in ordine alfabetico Classifica per Contributo UE Espandi tutto Riduci tutto Alfa Romeo Avio - Societ Aeromotoristica per Azioni Italia Contributo UE Nessun dato Indirizzo Viale Impero 80038 Pompigliano d'Arco Mostra sulla mappa Costo totale Nessun dato BMW Rolls-Royce GmbH Germania Contributo UE Nessun dato Indirizzo Hohemarkstraße 60-70 61440 Oberursel Mostra sulla mappa Costo totale Nessun dato CRANFIELD UNIVERSITY Regno Unito Contributo UE Nessun dato Indirizzo Wharley End, Cranfield MK43 0AL Cranfield - Bedfordshire Mostra sulla mappa Costo totale Nessun dato ECOLE NATIONALE SUPÉRIEURE DE MÉCANIQUE ET D'AÉROTECHNIQUE Francia Contributo UE Nessun dato Indirizzo Avenue Clément Ader, Site du Futuroscope - Télépor 86961 CHASSENEUIL DU POITOU Mostra sulla mappa Costo totale Nessun dato Fiat Avio SpA Italia Contributo UE Nessun dato Indirizzo Corso Ferrucci 112 10138 Torino Mostra sulla mappa Costo totale Nessun dato INSTITUTO SUPERIOR TECNICO Portogallo Contributo UE Nessun dato Indirizzo Avenida Rovisco Pais, Pav. 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