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Aerodynamics Flight Mechanics Approach on Compact Domains for Air Vehicle Separation

Jaffrézic, Benoit and Rütten, Markus and Rosemann, Henning (2015) Aerodynamics Flight Mechanics Approach on Compact Domains for Air Vehicle Separation. AIAA-Aviation - Modeling and Simulation Technologies Conference, 22. - 26. June 2015, Dallas, TX, USA. doi: 10.2514/6.2015-2949. ISBN 978-1-62410-355-1.

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Official URL: http://arc.aiaa.org/doi/abs/10.2514/6.2015-2949


CFD - flight mechanics simulations still suffer from the large resources required. That is the main motivation for setting up new techniques for predicting store trajectories. In the present study, a novel approach based on CFD simulations on compact domains is suggested. The basic idea proposed here is to split the CFD simulation in two parts with its own grids. The first large primary grid is called the global domain. This grid contains the airplane, from which the cargo drops. The other part, a smaller CFD grid, is the so called compact domain, on which the coupled CFD - ight mechanics (CFD-FM) simulation is performed. The steady CFD simulation on the global domain delivers the boundary conditions for the compact flow domain, on which the unsteady CFD-FM simulation for the flow and maneuver of the separating cargo are conducted. A very essential point for the performance of the whole process chain is the interpolation between global and compact domains and, in special cases, the used grid overset technique, behind. By considering a simple airfoil example the principles of the proposed approach are demonstrated. Thereafter, the validity and effciency of the presented approach are investigated and assessed against unsteady CFD-FM simulation on the basis of the separation of an Unmanned Combat Aerial Vehicle (UCAV) out of a future military transport aircraft. Furthermore, different scenarios of the separation of the UCAV are computed in order to study the feasibility of such a process. The results of the developed approach are promising both in terms of accuracy and wallclock runtimes.

Item URL in elib:https://elib.dlr.de/99597/
Document Type:Conference or Workshop Item (Speech)
Additional Information:AIAA-2015-2949
Title:Aerodynamics Flight Mechanics Approach on Compact Domains for Air Vehicle Separation
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Rütten, MarkusUNSPECIFIEDhttps://orcid.org/0000-0002-7991-5064UNSPECIFIED
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Page Range:pp. 1-22
Series Name:Conference Proceedings online
Keywords:Flight Mechanics Approach, Air Vehicle Separation
Event Title:AIAA-Aviation - Modeling and Simulation Technologies Conference
Event Location:Dallas, TX, USA
Event Type:international Conference
Event Dates:22. - 26. June 2015
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 - Military Technologies (old)
Location: Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > High Speed Configurations
Deposited By: Micknaus, Ilka
Deposited On:23 Nov 2015 15:14
Last Modified:23 Nov 2015 15:14

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