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Dynamic maneuver loads calculations for a sailplane and comparison with flight test

Voß, Arne and Ohme, Per (2018) Dynamic maneuver loads calculations for a sailplane and comparison with flight test. CEAS Aeronautical Journal, pp. 1-16. Springer. DOI: 10.1007/s13272-018-0300-9 ISSN 1869-5590

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Official URL: https://link.springer.com/article/10.1007/s13272-018-0300-9

Abstract

This work presents the results of dynamic maneuver simulations of a sailplane and the comparison with flight test data. The goal of the effort is to extend and validate an in-house toolbox used for loads analysis of free-flying flexible aircraft in the time domain. The underlying aerodynamic theories are the steady vortex lattice and the doublet lattice method with a rational function approximation for the unsteady simulations in the time domain. The structural model comprises a beam model to represent the stiffness properties and a lumped mass model, both are developed using preliminary design methods. Steady aeroelastic trim simulations are performed and used as initial condition for the time simulation of the unsteady maneuvers in which the pilot’s commands, which were recorded during flight test, are prescribed at the control surfaces. Two vertical maneuvers with elevator excitation, two rolling maneuvers with aileron excitation and three aileron sweeps are simulated. The validation focuses on the comparison of interesting quantities such as section loads, structural accelerations and the rigid body motion. Good agreement between simulation and flight test data is demonstrated for all three kinds of maneuvers, confirming the quality of the models developed by the preliminary design methods.

Item URL in elib:https://elib.dlr.de/119603/
Document Type:Article
Additional Information:The attached PDF is a post-peer-review, pre-copyedit version of an article published in CEAS Aeronautical Journal. The final authenticated version is available online at: http://dx.doi.org/10.1007/s13272-018-0300-9
Title:Dynamic maneuver loads calculations for a sailplane and comparison with flight test
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Voß, ArneArne.Voss (at) dlr.dehttps://orcid.org/0000-0003-2266-7853
Ohme, PerPer.Ohme (at) dlr.deUNSPECIFIED
Date:6 April 2018
Journal or Publication Title:CEAS Aeronautical Journal
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:No
DOI :10.1007/s13272-018-0300-9
Page Range:pp. 1-16
Publisher:Springer
ISSN:1869-5590
Status:Published
Keywords:dynamic maneuver loads, flight test, sailplane, preliminary design, aeroelasticity, structural dynamics
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
Location: Göttingen
Institutes and Institutions:Institute of Aeroelasticity > Loads Analysis and Aeroelastic Design
Deposited By: Voß, Arne
Deposited On:22 May 2018 10:33
Last Modified:31 Jul 2019 20:17

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