The write formula

BAE Systems and McLaren have teamed up to test a technology that allows engineers to ‘write’ electrical circuits directly on to surfaces. It could pave the way for simpler, lighter UAVs and help McLaren in its Formula 1 ambitions.

‘Direct Write’, developed by BAE deposits electrical wires, resistors and other electrical components in 3D on to conformable surfaces and has been extensively tested by McLaren at its Woking Technology Centre.

The system allows McLaren to write the electrical interconnections directly on to the car components, which has the benefit of giving the car a lower profile than if conventional wiring was used. This enhances the car’s aerodynamic qualities, which could potentially gain crucial fractions of a second for the team during a race.

Engineers have used a number of methods for printing the electrical wires on to the surfaces including using an inkjet, a micro-nozzle and even a micro-pen that literally allows the engineers to ‘write’ the circuit on to the surface.