@article {Jaya Rajkumar:May 2006:0309-524X:243,
	author = "Jaya Rajkumar, M.",
	author = "Saha, U.K.",
	title = "Valve-Aided Twisted Savonius Rotor",
	journal = "Wind Engineering",
	volume = "30",
	year = "May 2006",
	abstract = "Accessories, such as end plates, deflecting plates, shielding and guide vanes, may increase the power of a Savonius rotor, but make the system structurally complex. In such cases, the rotor can develop a relatively large torque at small rotational speeds and is cheap to build, however it harnesses only a small fraction of the incident wind energy. Another proposition for increasing specific output is to place non-return valves inside the concave side of the blades. Such methods have been studied experimentally with a twisted-blade Thus, improving a Savonius rotor's, energy capture. This new concept has been named as the 'Valve-Aided Twisted Savonius'rotor. Tests were conducted in a low-speed wind tunnel to evaluate performance. This mechanism is found to be independent of flow direction, and shows potential for large machines.",
	pages = "243-254(12)",
	url = "http://www.ingentaconnect.com/content/mscp/wind/2006/00000030/00000003/art00006"
	doi = "doi:10.1260/030952406778606269"
}