Coaxial cable system for gas turbine engine

A method comprising:

• helically wrapping an electric conductor with a dielectric tape, the electric conductor to supply electric power in a gas turbine engine;
• inserting the electric conductor helically wrapped with the dielectric tape in a liquid dielectric inner conduit, the liquid dielectric inner conduit being impervious to dielectric liquid and surrounding the electric conductor helically wrapped with the dielectric tape;
• inserting the liquid dielectric inner conduit containing the electric conductor helically wrapped with the dielectric tape in a tube, the tube being a hollow flexible cooling tube;
• positioning the tube in a flexible conduit, the tube positioned in the flexible conduit between the electric conductor helically wrapped with the dielectric tape and an interior wall of the flexible conduit;
• positioning the flexible conduit containing the helically wrapped conductor in a flexible protective outer cover;
• routing the flexible conduit positioned in the flexible protective cover and containing the helically wrapped conductor on the gas turbine engine;
• injecting dielectric liquid into the flexible conduit via an inlet port included at a proximate end of the flexible protective outer cover;
• flowing the dielectric liquid along the electric conductor via a capillary flow path provided by the helically wound dielectric tape, the dielectric tape constructed and helically wound to provide the capillary flow path for the dielectric liquid so that the injected dielectric liquid flows along the capillary flow path;
• impregnating the dielectric tape with the dielectric liquid being injected to saturate the dielectric tape with the dielectric liquid;
• discharging fluid from the flexible conduit by injection of the dielectric liquid, the fluid discharged via an outlet port included at a distal end of the flexible conduit;
• and
• sealing the inlet port and the outlet port in response to discharge of the dielectric liquid from the outlet port to statically maintain the dielectric liquid in the flexible conduit so that the dielectric liquid flows via the capillary flow path only within the flexible conduit in response to temperature variations along the flexible conduit.

A system comprising:

• an electric conductor providing electric power in a gas turbine engine, the electrical conductor helically wrapped with a dielectric tape and disposed in a flexible conduit;
• the electric conductor maintained in position within the flexible conduit by an interior wall of the flexible conduit;
• the flexible conduit comprising an inlet and an outlet positioned on the flexible conduit for accessibility after the flexible conduit is installed on the gas turbine engine, the inlet configured to receive dielectric liquid and the dielectric tape providing a capillary flow path along the electric conductor toward the outlet to saturate the dielectric tape helically wrapped on the electric conductor;
• an inlet seal disposed on the inlet, and an outlet seal disposed on the outlet to statically maintain the dielectric liquid in the flexible conduit such that the dielectric liquid flows via the capillary flow path only within the flexible conduit in response to temperature variations along the flexible conduit;
• a tube positioned in the flexible conduit between the electric conductor helically wrapped with the dielectric tape and the interior wall, the tube being a hollow flexible cooling tube;
• and
• a liquid dielectric inner conduit between the tube and the electric conductor helically wrapped with the dielectric tape, the liquid dielectric inner conduit being impervious to dielectric liquid and surrounding the electric conductor helically wrapped with the dielectric tape, wherein the tube that includes the dielectric liquid is included in a first closed static fluid reservoir formed between the liquid dielectric inner conduit and the interior wall of the flexible conduit, and the capillary flow path along the electric conductor helically wrapped with the dielectric tape is included in a second static fluid reservoir.