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High-fidelity rotorcraft simulation model: analyzing and improving linear operating point models

Greiser, Steffen (2019) High-fidelity rotorcraft simulation model: analyzing and improving linear operating point models. CEAS Aeronautical Journal, 10 (3), pp. 687-702. Springer. ISSN 1869-5582

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Abstract

The simulation of the helicopter motion is a central component in flight control design, handling quality studies, and the understanding of physical effects. At best, the flight test results fulfll the expectations from the simulation. Even though identifcation and simulation techniques for linear models were continuously developed in the past, the fdelity achieved with existing tools is still insufcient—based on the experience with the research rotorcraft EC135 ACT/FHS. This paper is about the improvement of the simulation fdelity 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 fdelity is signifcantly 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/125362/
Document Type:Article
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:2019
Journal or Publication Title:CEAS Aeronautical Journal
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:No
Volume:10
Page Range:pp. 687-702
Publisher:Springer
ISSN:1869-5582
Status:Published
Keywords:ACT/FHS, inverse Simulation, model stitching, helicopter, air resonance, EC135, System identification
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:02 Jan 2019 15:57
Last Modified:06 Sep 2019 15:24

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