Zobrazeno 1 - 10 of 144 pro vyhledávání: '"J. V. R. Prasad"'
1
Akademický článek
Identification of High-Order Linear Time-Invariant Models from Periodic Nonlinear System Responses
Autor: Mahmoud A. Hayajnh, Umberto Saetti, J. V. R. Prasad
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
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2
Akademický článek
The Application of Rotor Control Equivalent Turbulence Input (RCETI) Models to Multi-Rotor Vehicles
Autor: Mahmoud A. Hayajnh, J. V. R. Prasad
Publikováno v: Aerospace, Vol 11, Iss 11, p 896 (2024)
This research paper investigates the applicability and scalability of the Rotor Control Equivalent Turbulence Input models for multi-rotor vehicles. Initially, a Rotor Control Equivalent Turbulence Input model is developed for an isolated rotor using
Externí odkaz: https://doaj.org/article/e9b9a6e555144c15a68d3db865f198c1
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4
Combined Momentum Theory and Simple Vortex Theory Inflow Model for Multirotor Configurations
Autor: Feyyaz Guner, J. V. R. Prasad
Publikováno v: Journal of the American Helicopter Society. 67:1-15
For conventional main/tail rotor helicopters, momentum theory-based inflow models are still popular for design trade studies and flight simulations. However, simple momentum theory-based inflow models are not readily applicable in design trade studie
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b5cf51e19fb85bf8abe44271f0c82904
https://doi.org/10.4050/jahs.67.022007
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5
Fidelity Enhancement of a Multirotor Dynamic Inflow Model via System Identification
Autor: Feyyaz Guner, J. V. R. Prasad, Chengjian He, David Peters
Publikováno v: Journal of the American Helicopter Society. 67:1-17
Multirotor analytical dynamic inflow models in the literature, such as pressure potential superposition inflow model or velocity potential superposition inflow model (VPSIM), have been shown to capture the fundamental inflow interference effects betw
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8f353ac28af7a73fa06c7ef1d123a6de
https://doi.org/10.4050/jahs.67.022009
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8
An Approximate Finite State Dynamic Wake Model for Predictions of Inflow below the Rotor
Autor: Feyyaz Guner, David A. Peters, J. V. R. Prasad
Publikováno v: Journal of the American Helicopter Society. 66:1-10
The velocity potential based finite state dynamic inflow model can predict inflow anywhere in the flow field once velocity potential states and costates are known. However, solution to costate equations requires backward time marching, making it inco
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0dcb223518fafc944d799d0b97bfc5c1
https://doi.org/10.4050/jahs.66.032007
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10
Finite State Inflow Flow Model for Coaxial Rotor Configuration
Autor: Chengjian He, J. V. R. Prasad, Lakshmi N. Sankar, Yong-Boon Kong
Publikováno v: Journal of the American Helicopter Society. 65:1-11
An analytical coaxial rotor inflow model has been developed from potential flow theory using the pressure potential superposition approach. The coaxial rotor pressure potential superposition inflow model (PPSIM) is formulated in statespace form with
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a88e449cea32b3decc78c3ba415d5741
https://doi.org/10.4050/jahs.65.032002
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