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High Fidelity Rotorcraft Simulation Model: Analyzing and Improving Linear Operating Point Models

Greiser, Steffen (2017) High Fidelity Rotorcraft Simulation Model: Analyzing and Improving Linear Operating Point Models. Deutscher Luft- und Raumfahrtkongress, 05.-07. Sep. 2017, München, Deutschland.

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Abstract

The simulation of the helicopter motion is a central component in e.g. flight control design, handling quality studies, and the understanding of physical effects. At best, the flight test results fulfill the expectations from the simulation. Even though identification and simulation techniques for linear models were continuously developed in the past, the fidelity achieved with existing tools is still insufficient - based on the experience with the research rotorcraft EC135 ACT/FHS. This paper is about the improvement of the simulation fidelity for the bare and stabilized vehicle. A pragmatic procedure is presented that updates a given linear (physics-based) model by adding (not physics-based) models and systems. Methods used are inverse simulation, partial closed-loop analysis, and model stitching. The paper shows how to combine these methods in a certain framework so that the simulation fidelity is significantly improved. Comprehensible examples as well as data from the research rotorcraft ACT/FHS are documented to provide the reader with more insights.

Item URL in elib:https://elib.dlr.de/113763/
Document Type:Conference or Workshop Item (Speech)
Title:High Fidelity Rotorcraft Simulation Model: Analyzing and Improving Linear Operating Point Models
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Greiser, Steffensteffen.greiser (at) dlr.deUNSPECIFIED
Date:5 September 2017
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:ACT/FHS, helicopter, system identification, linear model, inverse simulation, model validation, simulation fidelity
Event Title:Deutscher Luft- und Raumfahrtkongress
Event Location:München, Deutschland
Event Type:national Conference
Event Dates:05.-07. Sep. 2017
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:rotorcraft
DLR - Research area:Aeronautics
DLR - Program:L RR - Rotorcraft Research
DLR - Research theme (Project):L - The Smart Rotorcraft
Location: Braunschweig
Institutes and Institutions:Institute of Flight Systems > Rotorcraft
Deposited By: Greiser, Steffen
Deposited On:10 Oct 2017 11:14
Last Modified:20 Oct 2017 12:50

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