Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Umberto Saetti"'
Publikováno v:
Aerospace, Vol 11, Iss 11, p 875 (2024)
This paper presents a novel step in the extension of subspace identification toward the direct identification of harmonic decomposition linear time-invariant models from nonlinear time-periodic system responses. The proposed methodology is demonstrat
Externí odkaz:
https://doaj.org/article/061d1b23f4a14a66a4d9bab69995bf19
Publikováno v:
Aerospace, Vol 11, Iss 1, p 33 (2023)
A novel trajectory generation and control architecture for fully autonomous autorotative flare that combines rapid path generation with model-based control is proposed. The trajectory generation component uses optical Tau theory to compute flare traj
Externí odkaz:
https://doaj.org/article/ee17ec0a089b455b8e78ade70df8fcfe
Autor:
Umberto Saetti, Joseph F. Horn
Publikováno v:
Journal of the American Helicopter Society. 68:1-10
This paper discusses the development of a numerical method for the approximation of the nonlinear time-periodic rotorcraft flight dynamics with higher order linear time-invariant (LTI) models. The method relies on a per-rotor revolution perturbation
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bdb604bf68114b5508ba87e79125a098
https://doi.org/10.4050/jahs.68.012006
https://doi.org/10.4050/jahs.68.012006
Autor:
Umberto Saetti, Jonathan Rogers
Publikováno v:
Journal of Guidance, Control, and Dynamics. 45:1371-1384
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5d6dba955fe6b9149770d0a3429f9668
https://doi.org/10.2514/1.g006447
https://doi.org/10.2514/1.g006447
Publikováno v:
Journal of the American Helicopter Society. 67:153-166
The objective of this investigation is threefold. First, to assess the flight dynamics of an electric vertical take-off and landing (eVTOL) concept aircraft with a propeller-driven rotor. Second, to develop an automatic flight control system (AFCS) f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7d7cf7cabc954f3a42a8ddeff3ed3738
https://doi.org/10.4050/jahs.67.032012
https://doi.org/10.4050/jahs.67.032012
Publikováno v:
Journal of Aircraft. 59:364-376
Condition-based maintenance programs for modern helicopters rely on algorithmic techniques to estimate the useful life remaining for life-limited components. Regime-recognition-based condition-base...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e77313484e2048830f75db7547206872
https://doi.org/10.2514/1.c036561
https://doi.org/10.2514/1.c036561
Autor:
Umberto Saetti, Joseph F. Horn
Publikováno v:
Journal of the American Helicopter Society.
This article describes the implementation and linearization of free-vortex wake models in state-variable form as applied to rotary- and flapping-wing vehicles. More specifically, the wake models are implemented and tested for a UH-60 rotor in forward
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fae39cec0784af9e7b9dcf8f70fadcb8
https://doi.org/10.4050/jahs.68.042004
https://doi.org/10.4050/jahs.68.042004
Autor:
Jonathan Rogers, Umberto Saetti
Publikováno v:
Journal of Guidance, Control, and Dynamics. 44:1008-1017
In this paper, a numerical method is proposed for determining the periodic state and control solutions of nonlinear time-periodic systems. Starting from an initial guess at the solution, the algori...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a40c1ab474f1b0bbc0aadf32e0496276
https://doi.org/10.2514/1.g005553
https://doi.org/10.2514/1.g005553
Autor:
Umberto Saetti
Publikováno v:
AIAA AVIATION 2022 Forum.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cb861cb6883d72d24a97158dd0c710fb
https://doi.org/10.2514/6.2022-3646
https://doi.org/10.2514/6.2022-3646
Autor:
Umberto Saetti, Nek Sharan
Publikováno v:
AIAA AVIATION 2022 Forum.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ea1ee70e4c3dade2f2cdd3bcac81e85d
https://doi.org/10.2514/6.2022-3841
https://doi.org/10.2514/6.2022-3841