I redesign the airframe to be showcased in San Fransisco to incorporate structural members where I thing they go best, taking the opportunity to reduce the foot-print to 45 cm square from 50 cm. Longer term these could realistically be put together like the traditional phone-box from four panels plus a dome and base, although for integrity I'm constructing the thing as a monocoque unit.
This is not least because it has to survive the aircraft cargo compartment intact. A flat-pack philosophy is great for the longer term, though in the shorter we're all familiar with the fact that IKEA furniture if not ideal for dismantling and reassembly.
Meanwhile Martin has pushed the power-train to seventy-five kilos of thrust using an old pair of batteries with six cells apiece. Given a new pair with the necessary seven cells, we should be in the ball-park for a demo flight.
