Abstract: A hydraulically driven de-oiler for gas turbine engines including a lubricant pumping section operatively coupled with a fuel impelling section, the lubricant pumping section and the fuel impelling section being divided by a lubricant to fuel divider; a helical sinus formed within the lubricant pumping section, the helical sinus configured to pump at least one of lubricant, and lubricant mist from a de-oiler tank inlet to a de-oiler tank outlet and configured to pump the air to a de-oiler air vent outlet in the absence of lubricant; and the fuel impelling section fluidly coupled with a fuel inlet and a fuel outlet, the fuel impelling section comprising impellers configured to receive a fluid flow of fuel and translate a flow energy from the fluid flow into a mechanical rotational energy and impart the mechanical rotational energy into the de-oiler.

Abstract: A hydraulically driven de-oiler for gas turbine engines including a lubricant pumping section operatively coupled with a fuel impelling section, the lubricant pumping section and the fuel impelling section being divided by a lubricant to fuel divider; a helical sinus formed within the lubricant pumping section, the helical sinus configured to pump at least one of lubricant, and lubricant mist from a de-oiler tank inlet to a de-oiler tank outlet and configured to pump the air to a de-oiler air vent outlet in the absence of lubricant; and the fuel impelling section fluidly coupled with a fuel inlet and a fuel outlet, the fuel impelling section comprising impellers configured to receive a fluid flow of fuel and translate a flow energy from the fluid flow into a mechanical rotational energy and impart the mechanical rotational energy into the de-oiler.