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Dynamic Maneuver Loads Calculation for a Sailplane and Comparison with Flight Test

Voß, Arne and Pinho Chiozzotto, Gabriel and Ohme, Per (2017) Dynamic Maneuver Loads Calculation for a Sailplane and Comparison with Flight Test. In: IFASD 2017 - International Forum on Aeroelasticity and Structural Dynamics. IFASD 2017 - International Forum on Aeroelasticity and Structural Dynamics, 25.-28. Jun. 2017, Como, Italien. ISBN 978-88-97576-28-0

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Abstract

This work presents the results of dynamic maneuver simulations of a sailplane and the comparison to 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 (RFA) 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 and two rolling maneuvers with aileron excitation 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 both vertical and rolling maneuvers, confirming the quality of the models developed by the preliminary design methods.

Item URL in elib:https://elib.dlr.de/113152/
Document Type:Conference or Workshop Item (Speech)
Title:Dynamic Maneuver Loads Calculation 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
Pinho Chiozzotto, Gabrielgabriel.pinhochiozzotto (at) dlr.deUNSPECIFIED
Ohme, Perper.ohme (at) dlr.deUNSPECIFIED
Date:25 June 2017
Journal or Publication Title:IFASD 2017 - International Forum on Aeroelasticity and Structural Dynamics
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
ISBN:978-88-97576-28-0
Status:Published
Keywords:dynamic maneuver loads, flight test, sailplane, preliminary design, aeroelasticity, structural dynamics
Event Title:IFASD 2017 - International Forum on Aeroelasticity and Structural Dynamics
Event Location:Como, Italien
Event Type:international Conference
Event Dates:25.-28. Jun. 2017
Organizer:Politecnico di Milano, Department of Aerospace Science and Technology
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:14 Jul 2017 11:57
Last Modified:31 Jul 2019 20:10

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