Explanipedia

Flyover auralization of a blended wing body aircraft considering atmospheric turbulence effects Open

Reto Pieren, Dorothea Lincke, Axel Heusser, Ingrid Legriffon, Lothar Bertsch , et al. · 2024

In the ARTEM project a novel blended wing body (BWB) long-range aircraft was designed and optimized for low-noise operation. Virtual flyovers of different BWB vehicle variants were synthesized and auralized in the AuraLab using a loudspeak…

Perception-based noise assessment of a future blended wing body aircraft concept using synthesized flyovers in an acoustic VR environment—The ARTEM study Open

Reto Pieren, Ingrid Le Griffon, Lothar Bertsch, Axel Heusser, Francesco Centracchio , et al. · 2023

New aircraft concepts are currently being developed with the goal of less emissions of CO2 and noise. Remarkable noise reductions in long-range aircraft can only be expected from disruptive vehicle designs, new propulsion systems and speci…

EVALUATION OF FLYOVER AURALIZATIONS OF TODAY'S AND FUTURE LONG-RANGE AIRCRAFT CONCEPTS Open

Beat Schäffer, Lothar Bertsch, Ingrid Le Griffon, Axel Heusser, Catherine Lavandier , et al. · 2023

International audience

Flyover noise evaluation of low-noise technologies applied to a blended wing body aircraft Open

Ingrid Legriffon, Lothar Bertsch, Francesco Centracchio, Daniel J. Weintraub · 2023

In the frame of the European research project ARTEM (Aircraft noise Reduction Technologies and related Environmental iMpact), new aircraft architectures and alternative propulsion systems, e.g. Blended Wing Body (BWB) and geared turbofan e…

FLYOVER NOISE EVALUATION OF LOW-NOISE TECHNOLOGIES APPLIED TO A BLENDED WING BODY AIRCRAFT Open

Ingrid Legriffon, Lothar Bertsch, Francesco Centracchio, Daniel J. Weintraub · 2023

A COMPARATIVE STUDY OF SEMI-EMPIRICAL NOISE EMISSION MODELS BASED ON THE PANAM AND SONAIR Open

G. Greco, Felix Wienke, Lothar Bertsch, Christoph Zellmann, B SCHAFFER , et al. · 2022

Aircraft Noise Open

Lothar Bertsch, Adrian Sescu · 2022

This reprint is about aircraft noise. Multidisciplinary topics are covered. One focus is supersonic transport aircraft and their noise generation during approach and take-off. The articles within this study present recent and ongoing resea…

Simulation of Landing and Take-Off Noise for Supersonic Transport Aircraft at a Conceptual Design Fidelity Level Open

Michel Nöding, Martin Schüermann, Lothar Bertsch, Marc Koch, Martin Plohr , et al. · 2021

The German Aerospace Center has launched an internal project to assess the noise impact associated with supersonic transport aircraft during approach and departure. A dedicated simulation process is established to cover all relevant discip…

Low-Noise Design of Medium-Range Aircraft for Energy Efficient Aviation Open

Vincent Domogalla, Lothar Bertsch, Martin Plohr, Eike Stumpf, Z. S. Spakovszky · 2021

Promising low-noise aircraft architectures have been identified over the last few years at DLR. A set of DLR aircraft concepts was selected for further assessment in the context of sustainable and energy-efficient aviation and was establis…

Application of Noise Certification Regulations within Conceptual Aircraft Design Open

Michel Nöding, Lothar Bertsch · 2021

ICAO Annex 16 regulations are used to certify the acoustic performance of subsonic transport aircraft. Each aircraft is classified according to the measured EPNL levels at specific certification locations along the approach and departure. …

Sound quality assessment of a medium-range aircraft with enhanced fan-noise shielding design Open

Gil Felix Greco, Lothar Bertsch, Tobias P. Ring, Sabine Langer · 2021

The investigation of technologies that can improve the sustainability of the air transport system requires not only the development of alternative fuel concepts and novel vehicle technologies but also the definition of appropriate assessme…

A Comparison of Aircraft Flyover Auralizations by the Aircraft Noise Simulation Working Group Open

Stephen A. Rizzi, Ingrid Legriffon, Reto Pieren, Lothar Bertsch · 2020

International audience

Noise Prediction within Conceptual Aircraft Design Open

Lothar Bertsch, Sébastien Guérin, Jan Delfs, Markus Lummer · 2020

Motivation for the presented activities is the integration of noise as an additional objective in conceptual aircraft design. Therefore, the Parametric Aircraft Noise Analysis Module (PANAM) is developed to account for individual noise sou…

Entwurf und Bewertung einer lärmarmen Kurzstreckenkonfiguration im Vorentwurf - Erkenntnisse aus dem DLR-Projekt KonTeKst Open

Markus Dino Krengel, Lothar Bertsch, Katrin Dahlmann, Yves Günther, Berit Gerlinger , et al. · 2020

In dem DLR-Projekt KonTeKst - Konfigurationen und Technologien für Kurzstreckenflugzeuge wurden Ideen für emissions- und lärmarme Kurzstreckenflugzeuge entwickelt und analysiert. Ziel des ersten Hauptarbeitspakets war die Entwicklung und B…

Improving future low-noise aircraft technologies using experimental perception-based evaluation of synthetic flyovers Open

Reto Pieren, Lothar Bertsch, Demian Lauper, Beat Schäffer · 2019

10 years of joint research at DLR and TU Braunschweig toward low-noise aircraft design-what did we achieve? Open

Lothar Bertsch, Wolfgang Heinze, Sébastien Guérin, Markus Lummer, Jan Delfs · 2019

This review article is based on an invited keynote presentation at the 22ndWorkshop of the Aero acoustics Specialists Committee of the CEAS. The event was held in September 2018 in Amsterdam with the main focus on the relation between airc…

The Aircraft Noise Simulation Working Group (ANSWr) -Tool Benchmark and Reference Aircraft Results Open

Lothar Bertsch, Ian Clark, Laurent Sanders, Ingrid Legriffon · 2019

International audience

The Aircraft Noise Simulation Working Group (ANSWr) – V2 Aircraft Results Open

Laurent Sanders, Russell H. Thomas, Lothar Bertsch, Ingrid Legriffon, Ian Clark , et al. · 2019

A joint research activity of DLR, NASA and ONERA in the field of aircraft noise simulation is described. The Aircraft Noise Simulation Working Group (ANSWr) has been established to compare simulation tools, establish guidelines for noise p…

Correction to: Aircraft noise generation and assessment Open

Lothar Bertsch, Mirjam Snellen, Lars Enghardt, Cornelia Hillenherms · 2019

Evaluation of ultra-high bypass ratio engines for an over-wing aircraft configuration Open

Daniel Giesecke, Marcel Lehmler, Jens Friedrichs, Jason Blinstrub, Lothar Bertsch , et al. · 2018

Today, main hub airports are already at their capacity limit and hence, smaller airports have become more interesting for providing point-to-point connections. Unfortunately, the use of regional airports induces an increased environmental …

Aircraft Noise Assessment—From Single Components to Large Scenarios Open

Jan Delfs, Lothar Bertsch, Christoph Zellmann, Lennart Rossian, Ehsan Kian Far , et al. · 2018

The strategic European paper “Flightpath 2050” claims dramatic reductions of noise for aviation transport scenarios in 2050: “...The perceived noise emission of flying aircraft is reduced by 65%. These are relative to the capabilities of t…

ERGEBNISSE DES FLUGZEUGVORENTWURFSPROJEKTS “FREACS” (FUTURE ENHANCED AIRCRAFT CONFIGURATIONS) Open

Till Pfeiffer, Erwin Moerland, Sebastian Freund, Yasim J. Hasan, Lothar Bertsch , et al. · 2017

Das DLR Projekt FrEACs (Future Enhanced Aircraft Configurations) hat sich mit der Auslegung unkonventioneller Flugzeugkonfigurationen beschäftigt. Dabei war es ein wesentlicher Bestandteil, ein verteiltes Entwurfssystem aufzubauen, welches…

High-Lift Research for Future Transport Aircraft Open

Rolf Radespiel, Wolfgang Heinze, Lothar Bertsch · 2017

Careful analysis of long-term objectives of air transport indicates that the needed progress in vehicle performance cannot be satisfied by following the current, evolutionary technology development. Particular examples are noise reduction …

Towards an uncertainty analysis for parametric aircraft system noise prediction Open

Lothar Bertsch, Beat Schäffer, Sébastien Guérin · 2017

Parametric noise assessment in the context of low-noise aircraft design and flight procedure optimization has been \naround for more than 15 years. Continuous improvement of the models and the interconnection to other simulation \ntools, s…

System Noise Assessment of an Aircraft with Coanda Flaps Open

Jason Blinstrub, Wolfgang Heinze, Lothar Bertsch, Dick G. Simons, Mirjam Snellen · 2016

An innovative aircraft design of the Collaborative Research Centre (SFB) 880 features a new active high-lift system. This high-lift system is comprised of a droop-nose leading edge device and a Coanda flap as the trailing edge device. It o…

Auralization of novel aircraft configurations Open

Michael Arntzen, Lothar Bertsch, Dick G. Simons · 2015

A joint initiative of NLR, DLR, and TU Delft has been initiated to streamline the process of generating audible impressions of novel aircraft configurations. The integrated approach adds to the value of the individual tools and allows pred…

Conceptual design of new low-noise aircraft Open

Lothar Bertsch · 2015

Noise levels generated by aircraft (and rotorcraft) can be assigned to the loudest noise sources of our times. Sound pressure levels close to a jet aircraft engine under take‐off conditions can reach the human threshold of pain with respec…

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