Abstract: A blade for a vertical axis wind turbine is disclosed. The blade comprises a unified skin having variable thickness, including a first skin section with greater thickness than a second skin section. The blade further includes a plurality of internal beam walls that connect a blade outside portion and a blade inside portion, with at least one beam wall positioned at a predefined distance, between 58% and 90% of the chord length, from the leading edge to enhance structural integrity. The blade additionally includes a bracketed structural member that is integrated into the thick skin section and configured to hold a nut bar, enabling secure, reinforcement-free attachment to a turbine arm. The design improves manufacturability, reduces weight, and enhances fatigue resistance under turbulent wind conditions.

Abstract: A collapsible rotor assembly and a method to assemble the rotor assembly are disclosed. The rotor assembly may include a mast, a blade, a first arm and a second arm. The rotor assembly may further include a first connection member attached to a mast top portion and a second connection member attached to a mast bottom portion. The rotor assembly may additionally include a third connection member attached to a blade top portion and a fourth connection member attached to a blade bottom portion. A first arm distal end may be pivotally attached with the first connection member and a first arm proximal end may be pivotally attached with the third connection member. Furthermore, a second arm distal end may be removably attached with the second connection member and a second arm proximal end may be pivotally attached with the fourth connection member.

Abstract: A method for installing a rotor assembly is disclosed. The method may include attaching a mast bottom end to a tower, and unhooking a first blade-arm bundle. The method may further include laterally extending a blade such that the blade may be disposed at a predefined distance from the mast. The method may further include unhooking a first arm-brace bundle, and attaching a first bracing member distal end to the mast between a mast top end and the mast bottom end. The method may further include unhooking a second blade-arm bundle, and attaching a second arm distal end to the mast. The method may further include unhooking the second arm-brace bundle, and attaching a second bracing member distal end to the mast between the mast top end and the mast bottom end.

Abstract: A method for bundling a collapsible rotor assembly is disclosed. The method may include hooking a first arm with a first bracing member to form a first arm-brace bundle, and hooking the first arm-brace bundle with a blade to firm a first blade-arm bundle. The method may further include hooking a second arm with a second bracing member to form a second arm-brace bundle, and hooking the second arm-brace bundle with the blade to form a second blade-arm bundle. The second arm-brace bundle may be hooked with the blade such that the first blade-arm bundle may be disposed between the second arm-brace bundle and the blade.

Abstract: A method for bundling a collapsible rotor assembly is disclosed. The method may include hooking a first arm with a first bracing member to form a first arm-brace bundle, and hooking the first arm-brace bundle with a blade to firm a first blade-arm bundle. The method may further include hooking a second arm with a second bracing member to form a second arm-brace bundle, and hooking the second arm-brace bundle with the blade to form a second blade-arm bundle. The second arm-brace bundle may be hooked with the blade such that the first blade-arm bundle may be disposed between the second arm-brace bundle and the blade.

Abstract: A fairing system configured to be attached to an arm of a vertical axis wind turbine is disclosed. The fairing system may include a first fairing portion and a second fairing portion. The first fairing portion may have a semi-elliptical cross section and the second fairing portion may have a V-shaped cross section. The first fairing portion may include a first elongated edge and a second elongated edge, and the second fairing portion may include a third elongated edge and a fourth elongated edge. The first elongated edge may be configured to be connected to the third elongated edge and the second elongated edge may be configured to be connected to the fourth elongated edge to form an aerodynamic structure.

Abstract: A method for installing a rotor assembly is disclosed. The method may include attaching a mast bottom end to a tower, and unhooking a first blade-arm bundle. The method may further include laterally extending a blade such that the blade may be disposed at a predefined distance from the mast. The method may further include unhooking a first arm-brace bundle, and attaching a first bracing member distal end to the mast between a mast top end and the mast bottom end. The method may further include unhooking a second blade-arm bundle, and attaching a second arm distal end to the mast. The method may further include unhooking the second arm-brace bundle, and attaching a second bracing member distal end to the mast between the mast top end and the mast bottom end.

Abstract: A collapsible rotor assembly and a method to assemble the rotor assembly are disclosed. The rotor assembly may include a mast, a blade, a first arm and a second arm. The rotor assembly may further include a first connection member attached to a mast top portion and a second connection member attached to a mast bottom portion. The rotor assembly may additionally include a third connection member attached to a blade top portion and a fourth connection member attached to a blade bottom portion. A first arm distal end may be pivotally attached with the first connection member and a first arm proximal end may be pivotally attached with the third connection member. Furthermore, a second arm distal end may be removably attached with the second connection member and a second arm proximal end may be pivotally attached with the fourth connection member.

Abstract: A polygonal mast connected to an arm of a vertical axis wind turbine via a hinged connection member is disclosed. The connection member may include an L-shaped bracket having a first portion and a second portion disposed perpendicular to the first portion. The first portion may be attached to a mast exterior surface. The connection member may further include a first plate and a second plate. The first plate may be attached to the second portion and first plate plane may be disposed perpendicular to mast longitudinal axis. The second arm may be attached to an arm distal end and second plate plane may be disposed parallel to arm longitudinal axis. The connection member may additionally include a first pivot connector and a second pivot connector pivotally connecting the first plate and the second plate. The arm distal end may be disposed between the first and second pivot connectors.

Abstract: In an embodiment, an automatic wind turbine placement device may automatically place vertical axis wind turbines in a land plot. The automatic wind turbine placement device may factor a turbine parameter set describing a vertical axis wind turbine array with a land parameter set describing a land plot. The automatic wind turbine placement device may calculate an optimal vertical axis wind turbine placement on the land plot to maximize electrical power production based on the turbine parameter set and the land parameter set. The automatic wind turbine placement device may apply the optimal vertical axis wind turbine placement to a land plot description. The automatic wind turbine placement device may present an output land plot description describing the optimal vertical axis wind turbine placement in relation to the land plot to a user.