A system for extracting energy for landing gear retraction may comprise a wheel pump rotationally coupled to a wheel via a pinion gear. A landing gear control valve assembly may be fluidly coupled to an output of the wheel pump. A secondary pump may be fluidly coupled to the landing gear control valve assembly, and an electric motor may be operationally coupled to the secondary pump.

A system for extracting energy for landing gear retraction may comprise a wheel pump rotationally coupled to a wheel via a pinion gear. A landing gear control valve assembly may be fluidly coupled to an output of the wheel pump. A secondary pump may be fluidly coupled to the landing gear control valve assembly, and an electric motor may be operationally coupled to the secondary pump.

A device comprising a combustion toroid for receiving combustion-induced centrifugal forces therein to continuously combust fluids located therein and an outlet for exhaust from said combustion toroid.

A device comprising a combustion toroid for receiving combustion-induced centrifugal forces therein to continuously combust fluids located therein and an outlet for exhaust from said combustion toroid.

A working fluid turbo comprising an enclosed housing; an intake port; an exhaust port; at least two sets of a plurality of disks within the housing; and a shaft connected to at least one set of the at least two sets of plurality of disks. The at least two sets of a plurality of disks has a first set of disks aligned with the intake port and a second set of disks aligned with the exhaust port. The shaft connects to at least one set of the at least two sets of disks. The first set of disks and the second set of disks each include an end plate with X-shaped walls that forms an X-shaped disk shaft, whereby the X-shaped disk shaft allows the working fluid to move between solid disks and holed disks.

A system comprising a tunnel implement for immersion in a moving mass. Energy from the moving mass passing through said tunnel implement is converted to rotational force. A collector device is provided having open and collapsed states, wherein the open state resists the moving mass. A rotational converting device converts the rotational force to constant singular direction. An input shaft is turned bidirectionally by the rotational force and two gears driven by the input shaft in opposite rotational directions, the gears separately attached to idler gears causing output gears attached to the idler gears to engage an output shaft in a same rotational direction. A bidirectional drive motor device drives a pulley device in a predetermined direction. A sensor device senses the position of the collector device. A trigger device is configured to activate said sensor device to indicate the collector device position and state, whether opened or collapsed.

A system comprising a tunnel implement for immersion in a moving mass. Energy from the moving mass passing through said tunnel implement is converted to rotational force. A collector device is provided having open and collapsed states, wherein the open state resists the moving mass. A rotational converting device converts the rotational force to constant singular direction. An input shaft is turned bidirectionally by the rotational force and two gears driven by the input shaft in opposite rotational directions, the gears separately attached to idler gears causing output gears attached to the idler gears to engage an output shaft in a same rotational direction. A bidirectional drive motor device drives a pulley device in a predetermined direction. A sensor device senses the position of the collector device. A trigger device is configured to activate said sensor device to indicate the collector device position and state, whether opened or collapsed.

A device for recovering energy from a flow of fluid including a support, a flexible membrane, an attachment system for attaching at least a first area of the membrane connecting this first area of the membrane to the support; force transmission device connected to a second area of the membrane remote from the first membrane area, this second area of the membrane being movable with respect to the support. The device includes separation limiting device, adapted to limit the separation of the first area of the membrane from at least a first point of the attachment system and to limit the separation of the second area of the membrane from a second point of the attachment system, these separation limiting device being such that the first and second areas are spaced apart from each other by a minimum distance (Dmin) smaller than the shortest length (Lmin) separating these first and second areas measured along a face of the membrane.

A device for recovering energy from a flow of fluid including a support, a flexible membrane, an attachment system for attaching at least a first area of the membrane connecting this first area of the membrane to the support; force transmission device connected to a second area of the membrane remote from the first membrane area, this second area of the membrane being movable with respect to the support. The device includes separation limiting device, adapted to limit the separation of the first area of the membrane from at least a first point of the attachment system and to limit the separation of the second area of the membrane from a second point of the attachment system, these separation limiting device being such that the first and second areas are spaced apart from each other by a minimum distance (Dmin) smaller than the shortest length (Lmin) separating these first and second areas measured along a face of the membrane.

A device for recovering energy from a flow of fluid including a support, a flexible membrane, an attachment system for attaching at least a first area of the membrane connecting this first area of the membrane to the support; force transmission means connected to a second area of the membrane remote from the first membrane area, this second area of the membrane being movable with respect to the support. The device includes separation limiting means, adapted to limit the separation of the first area of the membrane from at least a first point of the attachment system and to limit the separation of the second area of the membrane from a second point of the attachment system, these separation limiting means being such that the first and second areas are spaced apart from each other by a minimum distance (Dmin) smaller than the shortest length (Lmin) separating these first and second areas measured along a face of the membrane.