Really the final touches prior to fitting out in the workshop down south with all of the electrical components, and here's a quick and dirty failsafe for securing battery packs (in whose absence I concocted this looky-likey).
Typically the VTOL community use Velcro to secure, though I prefer cable-ties in addition now that they make ones with ratchets that release. Otherwise should packs part company in flight (a) they may fall on your head with deadly consequence and (b) flying is discontinued, which is ideally something done on the ground. A cheeky trick here is to rivet the angle-alloy bracket over the cable-tie, ensuring it's the right way up. This provides sufficient clearance to insert fresh ties during repeated flight-tests.
It all exemplifies our current choice of airframe layout, which incidentally is based on a previous, albeit one truncated at waist-height (below). Though what we have now is effectively a 'stretch' ~ familiar from the evolution of every successful airliner ~ the practicalities of a fixing an upper quad above head-height are too numerous to list here. Actually they're not, I just cannot be bothered.
Pictured below is that prototype (listed in the VFS database) shortly before it crashed at Llanberis. This led to mutual acrimony and blame-shaming among the development team, which I am proud to say was principally driven by myself in a storm-the-capitol moment of madness.
Check it out though ~ in the DNA, isn't it?
