DLR-Logo -> http://www.dlr.de
DLR Portal Home | Imprint | Privacy Policy | Contact | Deutsch
Fontsize: [-] Text [+]

Flight mechanical analysis of a solar-powered high-altitude platform

Hasan, Yasim Julian and Roeser, Mathias Stefan and Hepperle, Martin and Niemann, Steffen and Voß, Arne and Handojo, Vega and Weiser, Christian (2022) Flight mechanical analysis of a solar-powered high-altitude platform. CEAS Aeronautical Journal. Springer. doi: 10.1007/s13272-022-00621-2. ISSN 1869-5590.

[img] PDF - Published version

Official URL: https://link.springer.com/article/10.1007/s13272-022-00621-2


The German Aerospace Center (DLR) is currently developing an unmanned experimental solar-powered fixed-wing high-altitude platform designed to be stationed in the stratosphere for several days and to carry payload for earth observation missions. This paper deals with a flight mechanical analysis of the aircraft within the preliminary design phase. For this purpose, it briefly describes all disciplines involved in the preliminary design and gives an insight into their methods used. Subsequently, it presents an assessment of the aircraft in terms of stability and control characteristics. Doing so, it first deals with a dynamic stability investigation using a non-linear 6-degrees-of-freedom flight dynamic model with a simple quasi-stationary approach to account for flexibility, in which the aerodynamic derivatives are given for different airspeed-dependent flight shapes. The investigations show that the aircraft is naturally stable over the complete flight envelope. It does not have a typical short period mode. Instead, the corresponding mode involves altitude and airspeed changes to a large extent. At low airspeeds, the Dutch roll and spiral modes couple and form two non-classical modes. Second, it presents a control surface design evaluation process for the aircraft based on a flight mechanical requirement. This requirement addresses the necessary control authority to counteract the aircraft's responses due to gust encounters to not exceed afore-defined limits and to prevent the aircraft from entering a flight condition that it cannot be recovered from.

Item URL in elib:https://elib.dlr.de/191079/
Document Type:Article
Title:Flight mechanical analysis of a solar-powered high-altitude platform
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Hasan, Yasim JulianUNSPECIFIEDhttps://orcid.org/0000-0002-5081-223XUNSPECIFIED
Roeser, Mathias StefanUNSPECIFIEDhttps://orcid.org/0000-0002-9529-7518UNSPECIFIED
Niemann, SteffenUNSPECIFIEDhttps://orcid.org/0000-0001-9272-0635UNSPECIFIED
Voß, ArneUNSPECIFIEDhttps://orcid.org/0000-0003-2266-7853UNSPECIFIED
Handojo, VegaUNSPECIFIEDhttps://orcid.org/0000-0001-6030-2383UNSPECIFIED
Weiser, ChristianUNSPECIFIEDhttps://orcid.org/0000-0002-2968-6961UNSPECIFIED
Date:7 November 2022
Journal or Publication Title:CEAS Aeronautical Journal
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
Keywords:High-altitude platform, Solar-powered aircraft, Flight mechanics, Preliminary design, Gust encounter simulations, Stability and control
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Components and Systems
DLR - Research area:Aeronautics
DLR - Program:L CS - Components and Systems
DLR - Research theme (Project):L - Unmanned Aerial Systems
Location: Braunschweig
Institutes and Institutions:Institute of Flight Systems > Flight Dynamics and Simulation
Institute for Aerodynamics and Flow Technology
Institute of Composite Structures and Adaptive Systems
Institute of Aeroelasticity
Institute of System Dynamics and Control
Institute of Flight Systems
Institute of Composite Structures and Adaptive Systems > Functional Lightweight Structures
Deposited By: Hasan, Yasim Julian
Deposited On:30 Nov 2022 10:42
Last Modified:25 Jan 2023 11:48

Repository Staff Only: item control page

Help & Contact
electronic library is running on EPrints 3.3.12
Website and database design: Copyright © German Aerospace Center (DLR). All rights reserved.