Stability analysis of a tethered airfoil

Rimkus, Sigitas; Das, Tuhin; Mukherjee, Ranjan

doi:10.1109/acc.2013.6580714

Cited by 3 publications

(3 citation statements)

References 4 publications

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“…Then, setting Q = 0 and noting that a sensible solution has µ > 0, from Eqs. (10), (11), and (12) we find the following expressions for steady-state µ and spin speed Ω…”

Section: The Outer Half Of Each Blade Operates Below a Critical Anglementioning

confidence: 93%

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An Application of the Autogyro Theory to Airborne Wind Energy Extraction

Rimkus

Das

2013

Volume 3: Nonlinear Estimation and Control; Optimization and Optimal Control; Piezoelectric Actuation and Nanoscale Control; Ro

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Auto-rotation or autogyro is a well-known phenomenon where a rotor in a wind field generates significant lift while the wind induces considerable aerodynamic torque on the rotor. The principle has been studied extensively for applications in aviation. However, with recent works indicating immense, persistent, and pervasive, available wind energy at high altitudes, the principle of autogyro could potentially be exploited for energy harvesting. In this paper, we carry out a preliminary investigation on the viability of using autogyros for energy extraction. We mainly focus on one of the earliest documented works on modeling of autogyro and extend its use to explore energy harvesting. The model is based on blade element theory. We provide simulation results of the concept. Although the results are encouraging, there are various practical aspects that need to be investigated to build confidence on this approach of energy harvesting. This work aims to build a framework upon which more comprehensive research can be conducted.

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“…Then, setting Q = 0 and noting that a sensible solution has µ > 0, from Eqs. (10), (11), and (12) we find the following expressions for steady-state µ and spin speed Ω…”

Section: The Outer Half Of Each Blade Operates Below a Critical Anglementioning

confidence: 93%

“…In prior work [10,11], we proposed using tethered airfoils to tap into the energy available in the wind at high altitudes. However, for high altitudes, the proposed method of generating power by reeling the kite in and out from a base point, or by using a moving base to harvest energy appear impractical.…”

Section: Background and Introductionmentioning

confidence: 99%

An Application of the Autogyro Theory to Airborne Wind Energy Extraction

Rimkus

Das

2013

Volume 3: Nonlinear Estimation and Control; Optimization and Optimal Control; Piezoelectric Actuation and Nanoscale Control; Ro

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“…Profesinė rizika aptarinėjama visuomeninių paslaugų valdymo srityje (ypač socialinių), kasdieninėje praktikoje bei socialinės politikos formavime, vaiko ir šeimos gerovės palaikyme (Goldson, 2000;Kemshall, 2008). Socialinės rizikos šeimų problematika analizuojama ir tyrinėjama įvairiuose socialinio pobūdžio darbuose (Vyvei et al, 2014;Milkinaitė, Marcinkevičiūtė, 2013;Rimkus, Žemgaliūnienė, 2013;Pivorienė, Abeciūnaitė, 2010;Bandzienė, 2008). Tyrimuose socialinio darbuotojo veikla, neretai, įvardijama kaip sudėtinga ir rizikinga, pristatomos patiriamos profesinės rizikos.…”

Section: įVadasunclassified