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Flight dynamics, handling and ride qualities of a flexible aircraft

Khalil, Ahmed Khalil Ali (2017) Flight dynamics, handling and ride qualities of a flexible aircraft. DLRK 2017, 05.-07. Sep 2017, Munich, Germany.

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Abstract

The effects of structural flexibility on aircraft flight dynamics and handling qualities are investigated. To do so, the equations of motion of an elastic vehicle are presented and then solved by means of trimming/simulation routines. The simulation results of a linear model are then compared with those of a nonlinear model of DLR’s Discus-2c sailplane. To further demonstrate the flexibility effects, two sets of modified aircraft models are developed. The first set alters the modal frequencies of DLR’s Discus-2c from their nominal values, whereas the second set alters the modal damping. The handling qualities, in terms of modal criteria and as compared to the MIL-STD-1797A, are examined for the first set of the modified aircraft models. With the second set of the modified aircraft models, the ride qualities in terms of acceleration at pilot location and biodynamic effects are examined.

Item URL in elib:https://elib.dlr.de/115509/
Document Type:Conference or Workshop Item (Lecture)
Title:Flight dynamics, handling and ride qualities of a flexible aircraft
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Khalil, Ahmed Khalil AliAhmed.Khalil (at) dlr.dehttps://orcid.org/0000-0002-8291-7351
Date:September 2017
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:flight dynamics; handling qualities; ride qualities; flexible aircraft; Discus-2c; sailplane; biodynamic coupling
Event Title:DLRK 2017
Event Location:Munich, Germany
Event Type:national Conference
Event Dates:05.-07. Sep 2017
Organizer:Deutsche Gesellschaft für Luft- und Raumfahrt (DGLR)
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:other
DLR - Research area:Aeronautics
DLR - Program:L - no assignment
DLR - Research theme (Project):L - no assignment
Location: Braunschweig
Institutes and Institutions:Institute of Flight Systems > Flight Dynamics and Simulation
Deposited By: Khalil, Ahmed Khalil Ali
Deposited On:21 Nov 2017 11:02
Last Modified:23 Feb 2019 00:22

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