Flugtriebwerkslaermminderung an der Quelle.

Description: MTU-Anteil: Laerm der Niederdruckturbine; Ziel: Erarbeitung der Technologie zur Reduktion des Triebwerkslaerms um 4 Dezibel

SupportProgram

Origins: /Bund/UBA/UFORDAT

Tags: Fluglärm ? Lärmminderung ? Lärmüberwachung ? Motorgeräusch ? Schallminderung ? Flugtriebwerk ? Flugzeug ? Lärmbekämpfung ? Schalldruckpegel ? Flugzeugbau ? Lärmschutztechnik ? Luft- und Raumfahrttechnik ? Lärmbelastung ? Luftverkehr ? Europa ? Fluglärmminderung ? Lärmquelle ? Combustor ? Fan-Noise-Reduction ? LP-Turbine-Noise-Reduction ? Niederdruckturbine ? Turbinenlaerm ? Turbomaschine ?

Region: Bavaria

Bounding boxes: 11.5° .. 11.5° x 49° .. 49°

License: cc-by-nc-nd/4.0

Language: Deutsch

Organisations

• BMW Rolls-Royce (Mitwirkung)
• Deutsches Zentrum für Luft- und Raumfahrt (Mitwirkung)
• Kommission der Europäischen Gemeinschaften Brüssel (Finanzielle Förderung)
• Mercedes-Benz Group AG (Mitwirkung)
• Motoren- und Turbinen Union Friedrichshafen (Projektverantwortung)
• Rolls Royce plc Aerospace Group (Mitwirkung)
• Societe Nationale d'Etude et de Construction de Moteurs d'Aviation (Mitwirkung)
• Umweltbundesamt (Bereitstellung)

Time ranges: 1998-01-01 - 2000-12-31

Alternatives

• Language: Englisch/English
  Title: RESOUND (Reduction of Engine Source Noise Through Understanding and Novel Design)
  Description: The principal aircraft and engine manufactures in Europe are facing increasing pressure to reduce aircraft noise levels. This arises both from the community expectations of improved quality of life and from the need to compensate for the expected growth in air traffic. A recent EC DGXII policy statement on aircraft noise declares: 'a co-ordinated strategic approach at European level is essential and major efforts need to be devoted to techniques for further reduction of exterior aircraft noise to overcome today's technology barrier. Hence the objective for R and TD is to enable a breakthrough in noise control technology'. The objective of RESOUND is to acquire the technology necessary to support the design of derivative and new aero-engines with noise levels that are 4 dB quieter than those of aircraft currently entering service. This will provide the foundation for the achievement of a mid-term (8 years) objective of reducing aircraft noise levels by at least 6 dB, and allow European industry to compete on an equal footing with the US.RESOUND addresses the challenge of reducing the noise at source, in particular turbomachinery noise, through (1) engine component aeroacoustic design and (2) through novel noise controlling devices that can be integrated within the engine structure. Innovative technologies to be evaluated, with the aid of theoretical techniques and experiments at model and full scale, include: fan noise reduction through reduced tip speed and pressure ratio optimisation, noise reduction with fan and stator axial sweep and circumferential lean, fan noise reduction with variable by-pass nozzle and passive fan tip treatments combustion noise reduction through improved and validated generation and propagation model assessment of potential noise hazards of low NOx combustors, LP turbine noise reduction through exit guide vane design, turbomachinery noise reduction through active stator design, turbomachinery noise reduction by means of auxiliary aeroacoustic control devices. Based on the technology acquired, RESOUND will deliver a full assessment of the community noise benefits of controlling engine noise at source, through design and with novel active/passive devices. The reduction of aircraft noise through improved nacelle technology and airframe design is being addressed by complementary proposals (RANNTAC and RAIN respectively), supported by two Type 2 proposals (DUCAT and FRAIN) all of wich will be coordinated through the X-NOISE thematic network that has been formed as a result of the Environmentally Friendly Aircraft study (TEFA). Such a combined efforts is necessary to meet the challenge of the US industry, which is backed by a full funded programme (200 MUSD over 7 years). https://ufordat.uba.de/UFORDAT/pages/PublicRedirect.aspx?TYP=PR&DSNR=58119

Status

Aktiv

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