3D printing achieves success – future UAVs, UCAVs and maybe even aircraft

3D printing achieves success – future UAVs, UCAVs and maybe even aircraft may be produced

View vid at URL and read report
http://www.newscientist.com/article/dn20737-3d-printing-the-worlds-first-printed-plane.html

“The promise of 3D printing has finally taken off with the development of a drone that takes just a week to create.

Under darkening skies on a grass airstrip in the UK’s Wiltshire Downs, north of Stonehenge, I am watching half a dozen aeronautical engineers rushing to assemble an uncrewed aircraft before the weather takes a turn for the worse. They are hoping to show how 3D printing will revolutionise the economics of aircraft design – by flying the world’s first fully “printed” plane.

Led by Andy Keane and Jim Scanlan of the University of Southampton, the team believes that 3D printing will soon allow uncrewed aircraft known as drones or UAVs to go from the drawing board to flight in a matter of days. No longer, they say, will one design of UAV be repeatedly manufactured on a production line. Instead, designers will be able to fine-tune a UAV for each specific application – whether it be crop spraying, surveillance or infrared photography – and then print a bespoke plane on demand.

3D printing has come on in leaps and bounds since its origins as an expensive prototyping tool over two decades ago. It uses laser-assisted machines to fabricate plastic or metal objects, building up the item layer by layer, each slice just 100 micrometres thick.

To do this, the 3D printer first slices up an object’s computerised design into hundreds of easily printable layers. Each layer is then “printed” by training a laser beam on a bed of polyamide plastic, stainless steel or titanium powder – depending on the object being created – tracing out the entire 2D shape required for that layer. The laser’s heat fuses the particles together at their boundaries. Once each layer is complete, more powder is scattered over it and the process repeated until a complete artefact is produced.

What the printer spits out is a powdery “cake” from which the desired object can be retrieved simply by pulling it out, like a child yanking a buried toy from a sandpit

To create a stronger object that can withstand higher loads and stresses, an electron beam can be used in place of a laser to melt the powder particles completely. And because 3D printing involves no cutting or grinding of metal, it offers vast design freedom……”

And folks its all British – yet another successful R&D project to be proud of😀