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Maneuver Simulation of a Flexible Transport Aircraft with HiFi-Methods and Comparison to Experimental Data

Ritter, Markus Raimund und Reimer, Lars und Mönnich, Wulf (2018) Maneuver Simulation of a Flexible Transport Aircraft with HiFi-Methods and Comparison to Experimental Data. DLRK 2018 - Deutscher Luft- und Raumfahrtkongress, 2018-09-04 - 2018-09-06, Friedrichshafen, Deutschland.

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Kurzfassung

A crucial issue in the development process of a modern jet transport aircraft is the comprehensive evaluation of its flight characteristics. Traditionally this requires extensive and costly flight tests including dedicated maneuvers for the development of a mathematical model via system identification. However, future aircraft designs must be characterized by increased time and cost reductions. Approaches for the replacement of flight tests therefore are of paramount importance in current research activities of aeronautical academia and industry. With the advent of sophisticated methods (CFD and CSM) for the detailed multidisciplinary simulation of complex aircraft configurations even in flight regimes characterized by compressible and viscous effects, the virtual flight test can be expected to yield results with accuracies close to the real flight test. This approach is currently followed in work package 3 of the DLR project VicToria. The goal is to establish the virtual flight test in order to significantly reduce development costs by decreasing the number of actual flight tests. Furthermore, the system identification process can already be started in the preliminary design process of the aircraft and enables its characterization at an early stage of the design. The virtual flight test proposed in this work corresponds to a multidisciplinary simulation based on high-fidelity methods for the involved disciplines. Aerodynamic forces are calculated in the time domain by CFD to account for nonlinearities; as for the flight dynamics, the governing equations of nonlinear rigid-body motions are applied. The structural flexibility of the airframe plays a decisive role for the flight dynamics, especially in maneuvers with higher loadings (e.g. 2.5 g load factor in pull-up) and is thus considered in the simulation approach. To ensure acceptable computing times, the simulations are performed massively parallel using a proper framework, where the multidisciplinary methods and processes developed in the predecessor project Digital-X are employed and extended. The test case of this work is the Airbus A320. A number of simulation models for the involved disciplines were either build from scratch (e.g. a CAD geometry representing the outer shape and the computational grid for the CFD simulations) or provided by the manufacturer (finite element model). Results of unsteady symmetric tail input maneuvers are presented for different levels of excitation. Selected results will be compared with data from flight tests.

elib-URL des Eintrags:https://elib.dlr.de/122074/
Dokumentart:Konferenzbeitrag (Vortrag)
Titel:Maneuver Simulation of a Flexible Transport Aircraft with HiFi-Methods and Comparison to Experimental Data
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Ritter, Markus RaimundMarkus.Ritter (at) dlr.dehttps://orcid.org/0000-0003-3828-0397NICHT SPEZIFIZIERT
Reimer, LarsLars.Reimer (at) dlr.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Mönnich, WulfInstitut für FlugsystemtechnikNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Datum:4 September 2018
Referierte Publikation:Ja
Open Access:Nein
Gold Open Access:Nein
In SCOPUS:Nein
In ISI Web of Science:Nein
Status:veröffentlicht
Stichwörter:CFD, numerical flight Dynamics, virtual flight test, ATRA
Veranstaltungstitel:DLRK 2018 - Deutscher Luft- und Raumfahrtkongress
Veranstaltungsort:Friedrichshafen, Deutschland
Veranstaltungsart:nationale Konferenz
Veranstaltungsbeginn:4 September 2018
Veranstaltungsende:6 September 2018
Veranstalter :Deutsche Gesellschaft für Luft- und Raumfahrt - Lilienthal-Oberth e.V.
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Luftfahrt
HGF - Programmthema:Flugzeuge
DLR - Schwerpunkt:Luftfahrt
DLR - Forschungsgebiet:L AR - Aircraft Research
DLR - Teilgebiet (Projekt, Vorhaben):L - VicToria (alt)
Standort: Göttingen
Institute & Einrichtungen:Institut für Aeroelastik > Lastanalyse und Entwurf
Institut für Aerodynamik und Strömungstechnik > CASE, BS
Institut für Flugsystemtechnik > Flugdynamik und Simulation
Hinterlegt von: Ritter, Markus Raimund
Hinterlegt am:20 Nov 2018 15:30
Letzte Änderung:24 Apr 2024 20:26

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