Hypsersonic jet engines

After more than 30 years of research, a new sort of rocket engine starts to sizzle SOME good ideas take years of dogged perseverance to come to fruition. That has certainly been true of a hypersonic engine which Alan Bond, a British engineer, began developing in 1982. Its first incarnation was as part of a […]

Miniature flying robots

At team at the wonderfully named Wyss Institute for Biologically Inspired Engineering at Harvard have created some tiny hovering robots. They are about the size of a house fly. So far, they can only fly tethered to a battery pack and controller, with battery technology still the limiting factor. To make flying machines this small […]