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Basic Maneuver Load Alleviation in Conceptual Aircraft Design

Krengel, Markus (2022) Basic Maneuver Load Alleviation in Conceptual Aircraft Design. 22th ONERA-DLR Aerospace Symposium, 01.-03.06.2022, Hamburg.

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Evaluating load alleviation technologies in conceptual aircraft design requires a cross-disciplinary simulation approach. In particular the design framework has to include a coupled, physics-based consideration of the disciplines aerodynamics, structures and flight dynamics rather than handbook equations. An approach like that enables the identification of possible overall aircraft efficiency benefits with active load alleviation. This paper presents a process that complies with the required level of fidelity, integrating flight control and aero-elasticity into the conceptual aircraft design. The software ASWING is included and provides an unsteady lifting-line calculation combined with non-linear Euler beam theory. It is evaluated how aerodynamic load reduction and wing geometry layouts affect the overall aircraft design. The aircraft design is, in contrast to the more detailed wing sizing, based on handbook methods. Maneuver load cases are evaluated. A combined fuel consumption of three flight missions is the main parameter for the evaluation. Geometrical constraints for the tank volume and the span limit are discussed. A simplified, so-called 2.5D- method sizes the wing box based on a carbon-fiber-reinforced polymer topology. The design space contains up to 1008 aircraft designs varied in six design parameters. This set of aircraft design points is evaluated without any and with maneuver load alleviation. The findings show a combined maximum load alleviation and shape optimization potential in fuel burn of 17.6 % without further constraints. For the constrained design space the maximum fuel benefit is 11.4 % compared to the reference aircraft.

Item URL in elib:https://elib.dlr.de/186721/
Document Type:Conference or Workshop Item (Speech)
Title:Basic Maneuver Load Alleviation in Conceptual Aircraft Design
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Krengel, MarkusUNSPECIFIEDhttps://orcid.org/0000-0002-2082-7051UNSPECIFIED
Date:1 June 2022
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
Page Range:pp. 1-11
Keywords:Aircraft Design, Load Alleviation, Aeroelasticity
Event Title:22th ONERA-DLR Aerospace Symposium
Event Location:Hamburg
Event Type:international Conference
Event Dates:01.-03.06.2022
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Efficient Vehicle
DLR - Research area:Aeronautics
DLR - Program:L EV - Efficient Vehicle
DLR - Research theme (Project):L - Aircraft Technologies and Integration
Location: Braunschweig
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > Transport Aircraft
Deposited By: Krengel, Markus Dino
Deposited On:25 Oct 2022 11:01
Last Modified:29 Mar 2023 00:51

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