The LZ130 Graf Zeppelin II that hangs from the ceiling of the EAA Aviation Museum in Oshkosh, Wisconsin, was built as a flying model to a scale of 1:36. [Courtesy: Meg Godlewski] Full disclosure: ...

These days, even hobbyist multi-rotor aircraft are capable of carrying considerable payloads. For example, the test rig that [Brian Brocken] recently put together should be able to loft more than 80 ...