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Preparation of Loads and Aeroelastic Analyses of a High Altitude, Long Endurance, Solar Electric Aircraft

Voß, Arne and Handojo, Vega and Weiser, Christian and Niemann, Steffen (2020) Preparation of Loads and Aeroelastic Analyses of a High Altitude, Long Endurance, Solar Electric Aircraft. AEC2020 Aerospace Europe Conference, 25-28 February 2020, Bordeaux, France.

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Abstract

High altitude, long endurance aircraft can serve as platform for scientists to make observations of the earth over a long period of time. Staying airborne only by solar electric energy is, as of today, a challenge for the aircraft design and requires an extremely light weight structure at the edge of the physically possible. This paper focuses on the loads and aeroelastic aspects of such a configuration, discusses the selected strategies and presents the applied methods and tools, including the resulting models prepared for the HAPomega configuration currently under development at the DLR. Because of the structural flexibility and the slow speed of the aircraft, flight mechanical and flight control aspects interact with aeroelastics e.g. during a gust encounter, making a non-linear time domain simulation necessary. Both maneuver and gust loads are used for the structural sizing and result in a very light and slender airframe with very low eigenfrequencies.

Item URL in elib:https://elib.dlr.de/133496/
Document Type:Conference or Workshop Item (Poster)
Title:Preparation of Loads and Aeroelastic Analyses of a High Altitude, Long Endurance, Solar Electric Aircraft
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Voß, ArneArne.Voss (at) dlr.dehttps://orcid.org/0000-0003-2266-7853
Handojo, Vegavega.handojo (at) dlr.dehttps://orcid.org/0000-0001-6030-2383
Weiser, ChristianChristian.Weiser (at) dlr.dehttps://orcid.org/0000-0002-2968-6961
Niemann, SteffenSteffen.Niemann (at) dlr.dehttps://orcid.org/0000-0001-9272-0635
Date:25 February 2020
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:High altitude platform, HALE, Maneuver loads, gust loads, aeroelasticity, structural dynamics
Event Title:AEC2020 Aerospace Europe Conference
Event Location:Bordeaux, France
Event Type:international Conference
Event Dates:25-28 February 2020
Organizer:CEAS and 3AF
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Flight Physics (old)
Location: Göttingen
Institutes and Institutions:Institute of Aeroelasticity > Loads Analysis and Aeroelastic Design
Institute of System Dynamics and Control > Aircraft System Dynamics
Institute of Composite Structures and Adaptive Systems > Functional Lightweight Structures
Deposited By: Voß, Arne
Deposited On:14 Apr 2020 07:31
Last Modified:14 Apr 2020 07:31

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