A power tether for aerial devices such as balloons or drones operates with as few as a single conductor, providing a ground return by capacitive coupling between the aerial device and a ground plane at a base station. High-frequency, high-voltage power allows significant power transfer through the low capacitance between the aerial station and the ground minimizing the necessary current flow.

An electric energy transmission tether for an airborne wind power station comprises an elastic core, a first layer of one or more electric conductors helically wound around the elastic core, an electric insulation layer surrounding the first layer of electric conductors, a second layer of one or more electric conductors helically wound around the electric insulation layer, and a load bearing layer surrounding the second layer of electric conductors, for absorbing tensile forces and radial pressure forces acting on the tether.

A tow cable for a decoy on a fast jet aircraft is described. The tow cable has a composite structure with a high friction fibre outer containment braiding, and low friction fibre internal strength members. Additional to these internal fibres may be electrical conductors and optical fibres. The whole composite providing a tow cable with high towing endurance and reliable in-flight performance, for flight profiles including high performance manoeuvres and in-flight refuelling.

An insulated electrically conductive element (1) for the aerospace field has an elongate electrically conductive element surrounded by at least two layers, said two layers being an electrically insulating layer (4) surrounding the elongate electrically conductive element (2) and a first semiconductor layer (5) surrounding said electrically insulating layer (4), at least one of the layers having at least one fluoropolymer.

A power tether for aerial devices such as balloons or drones operates with as few as a single conductor, providing a ground return by capacitive coupling between the aerial device and a ground plane at a base station. High-frequency, high-voltage power allows significant power transfer through the low capacitance between the aerial station and the ground minimizing the necessary current flow.

An electrical harness comprising at least one electrical connection, an electromagnetic protection system, a system for detecting electric arcs, and a tubular jacket obtained by braiding bundles of strands comprising metal strands forming at least part of the electromagnetic protection system and strands in the form of segments of optical fiber forming at least part of the system for detecting electric arcs. This solution contributes to reducing the mass of an electrical harness.

A hybrid cable configured to tether a drone or other aerial device to a base station may include at least one conductor configured to carry a power signal and at least one optical fiber component. A jacket may be formed around the at least one conductor and the at least one optical fiber component. The jacket may have an airfoil cross-sectional shape that is symmetrical about a center line extending from a first rounded edge to a second trailing edge. As a result, the cable may orient itself towards the wind and a lift force exerted on the cable may be approximately equal along opposite lateral sides of the cable.

Tensile cables with transmission cables arranged in undulating paths are described. The tensile cables include deformable supports that define the undulating paths and deform in response to a tension force exerted on opposing ends of the transmission cables.

A power cable and method of forming the cable that includes a first conductor guide that includes (i) a first distal receiving hole and (ii) a first axial receiving hole on a longitudinal axis of the power cable. The power cable also includes a second conductor guide that includes (i) a second distal receiving hole and (ii) a second axial receiving hole on the longitudinal axis. The power cable also includes a flexible drive shaft that is disposed in the first axial receiving hole and the second axial receiving hole and a conductor that twists around the longitudinal axis. The conductor is disposed in the first distal receiving hole and the second distal receiving hole.

Tensile cables with transmission cables arranged in undulating paths are described. The tensile cables include deformable supports that define the undulating paths and deform in response to a tension force exerted on opposing ends of the transmission cables.