The invention discloses a ceiling fan lamp with concealed fan blades, comprising a base plate, an upper motor cover, fan blade reset mechanisms, fan blades and tension springs, wherein a turnplate is fixed on an upper surface of the base plate, and a motor assembly connected to the turnplate is disposed inside the upper motor cover; a fan blade fixed disc, of which a periphery is fastened with the fan blades, is disposed on the turnplate, and a rotary stop plate having arc-shaped grooves thereon is rotationally disposed on the fan blade fixed disc; the fan blade reset mechanisms are matched with and connected to the fan blade fixed disc and the rotary stop plate respectively, and both ends of each tension spring are connected to the turnplate and the rotary stop plate respectively.

A system for directing the flow of a fluid which comprises a channel for containing the fluid; an articulating vane positioned within the channel for directing the flow of the fluid, the vane comprising a fixed segment rigidly connected to the channel and a first moveable segment operably connected to the fixed segment by a first hub, the first hub configured to allow relative articulation between the segments; an actuator member operably connected to the moveable segment to articulate the moveable segment about the first hub; and wherein the vane further comprises a second moveable segment operably connected to the vane by a second hub, wherein the actuator member articulates the first and second moveable segments by applying a single moment to the first hubs.

A fuel system for a gas turbine engine includes a fuel pump to provide fuel flow during engine operation and a transmission system that includes an output shaft coupled to drive the fuel pump, and an input shaft driven through a mechanical link to a shaft of the gas turbine engine. The output shaft drives the fuel pump at a variable speed that is independent of a rotational speed of the input shaft.