
➡️ This article was UPDATED on July 31, 2020 with additional information — see after video… Some pilots love to whirl their wings over their heads. Many others like the idea of rotary flight — offering short takeoffs and landings plus ease of operation in windier conditions. A majority have not (yet) acted on their interest but perhaps they are waiting for the right aircraft, maybe one of these. One is a very light coaxial helicopter from Russia. The other is a single place gyroplane from Poland. Micron-3 Coaxial Helicopter Have a glance at the RD Heli’s Micron-3 ultralight helicopter. This is like no other ultralight helicopter I’ve ever seen, although the idea of coaxial is not new. History suggests coaxial rotors originated with Mikhail Lomonosov a very long time ago, according to Wikipedia. Over the years, many helicopter models have emerged but none so compact as Micron-3 Coaxial rotors are a pair of helicopter rotors mounted one above the other driven by concentric driveshafts, with the same axis of rotation, but turning in opposite directions (contra-rotating; see graphic).