Journal ArticleDOI
Frequency-Response Method for Rotorcraft System Identification: Flight Applications to BO 105 Coupled Rotor/Fuselage Dynamics
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This article is published in Journal of The American Helicopter Society.The article was published on 1992-07-01. It has received 215 citations till now. The article focuses on the topics: Rotor (electric) & Fuselage.read more
Citations
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Journal ArticleDOI
Autonomous Helicopter Aerobatics through Apprenticeship Learning
TL;DR: These apprenticeship learning algorithms have enabled us to significantly extend the state of the art in autonomous helicopter aerobatics, including the first autonomous execution of a wide range of maneuvers, including in-place flips, in- place rolls, loops and hurricanes.
Journal ArticleDOI
Survey of advances in guidance, navigation, and control of unmanned rotorcraft systems
TL;DR: The main objective of this paper is to present a comprehensive survey of RUAS research that captures all seminal works and milestones in each GNC area, with a particular focus on practical methods and technologies that have been demonstrated in flight tests.
Journal ArticleDOI
Evolution of flight vehicle system identification
Peter G. Hamel,R. V. Jategaonkar +1 more
TL;DR: A comprehensive account of modern system identification techniques is provided in this paper, where several challenging examples bring out the fact that these techniques have reached a high level of maturity, making them a sophisticated and powerful tool not only for research purposes, but also to support the needs of the aircraft industry.
Journal ArticleDOI
System identification modeling of a small-scale unmanned rotorcraft for flight control design
System identification of small-size unmanned helicopter dynamics
TL;DR: In this paper, an accurate, high-bandwidth, linear state-space model was derived for the hover condition of a fully-instrumented model-scale unmanned helicopter (Yamaha R-SO with loft. diameter rotor) for dynamic model identification.
References
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Book
Aircraft Dynamics and Automatic Control
TL;DR: Approaching these two fields with the conviction that an understanding of either one can illuminate the other, the authors have summarized selected, interconnected techniques that facilitate a high level of insight into the essence of complex systems problems.
Journal ArticleDOI
Estimation of the magnitude-squared coherence function via overlapped fast Fourier transform processing
G. Carter,C. Knapp,A. Nuttall +2 more
TL;DR: In this paper, a method for estimating the magnitude-squared coherence function for two zero-mean wide-sense-stationary random processes is presented, which utilizes the weighted overlapped segmentation fast Fourier transform approach.
Journal ArticleDOI
The Wake Geometry of a Hovering Helicopter Rotor and Its Influence on Rotor Performance
Effects of primary rotor parameters on flapping dynamics
TL;DR: It is indicated that the frequency of the regressing flapping mode of the rotor system can become low enough to require consideration in the assessment of handling characteristics.
Programmer's manual for MMLE3, a general FORTRAN program for maximum likelihood parameter estimation
TL;DR: The MMLE3 is a maximum likelihood parameter estimation program capable of handling general bilinear dynamic equations of arbitrary order with measurement noise and/or state noise (process noise).