Check out secratnelson's entry in $10.00 USDcontest NASA System Architecture Registration...

This is my first drone, consistent hover 45 min, each blade is 10 inch, titanium frame and six motors support 3 cameras forward and rear still and a pivoting 360 vid and still. As power consumption is always a concern in space, I installed silicon UVPV cells allowing this drone to take its power from UVB rather than radiant light. I designed it to test viability of a seperate program for NASA Tournament Labs which is to utilized by the incoming autonomous Super B fliers aboard the ISS SpaceStation. Lacking the specs for the fliers, the only way I could have any confidence in the success of my "project" was to perform earthbound tests with a drone, but what I needed either did not exist or if it does, not with public access, the only thing left to do was to build it myself. Of course I'm totally biased, lol, I think it came out pretty awesome considering that prior to, I had never flown a drone much less considered building one.