There’s a backpack helicopter, the US Navy’s Sikorsky MH-53, and then this all-electric aircraft with 7 tail rotors. Inventor Oskar took a standard Mosquito Air kit, powered by a two-stroke engine, and turned it into an electric helicopter using an EMRAX 228 109 kW brushless motor. It started out using a traditional drive-shaft powered tail rotor before it was replaced with multiple smaller rotors powered by separate motors.
In the end, Oskar realized that he only required four of the 5008 or 5010 size motors with 18″ props to get comparable thrust to the traditional drive-shaft, but the extras were added for additional safety as well as redundancy. Some of the advantages of this setup include being able to autorotate safely to the ground in case of an engine failure, and its independent power enables all of the energy to be used by the main rotor, reducing descent speed by 120 feet per second. Power comes from a 7.8 kWh, 40 kg LiPo battery pack located beneath the seat, good for a flight time for up to 27-minutes.
- Durable Alloy Construction: SYMA S107H-E RC helicopter is built with a full alloy metal body that can handle rough landings, bumps, and...
- Easy to Use: Flying has never been easier! With intuitive one-button functions for takeoff and landing, Altitude Hold for stable hovering, and an...
- Dual Speed Modes: Equipped with two speed settings — low speed is perfect for learning and practicing in smaller spaces, while high speed lets you...
