Unmanned aerial vehicles (UAV) are a quickly advancing technology, finding use in applications ranging from hobbyist projects to military operations. While many consumers are familiar with the small drones that may be purchased from a retail store for private use, drones can widely vary in their size and construction to accommodate a number of needs. Rotary-wing UAVs are quite popular, and they come in types like monocopters, single-rotor UAVs, twin-rotor UAVS, and multi-rotor UAVs. In this blog, we will discuss each rotary wing subcategory in brief detail, allowing you to be more familiar with the common options on the market.