SPIRITTM COUNTER-ROTATING ELECTRIC DRONE MOTORS FROM CR FLIGHTTM
Sacramento based CR FlightTM specializes in creating highly efficient and powerful counter-rotating (CR) motors for both vertical takeoff and landing (VTOL) and horizontal flight drones. CR Flight’sTM patented and patent pending SpiritTM CR motors will be available in various thrust sizes (initially, 10, 50, and 100 lbs of lift) or in customer-requested configurations. The targeted markets include high-performance drones utilized in the areas of: forestry and agricultural inspections/sprayings; architectural/construction inspections; mining and aggregate operations; public safety in search and rescue, firefighting, and policing; infrastructural inspections for pipelines, powerlines, bridges, roads, and the like; sophisticated photography for surveying and mapping; product delivery; and personal transportation.
Current drone motors have several severe limitations, including: drawing too much electrical power, thereby resulting in restricted flight times; limited thrust when required for necessary lift and emergency operations; and excessive operational temperatures that shorten the life-expectancy of the motors. CR Flight’sTM SpiritTM CR motors easily overcome all these limitations.
During operation, any CR motor spins both the rotor and the stator (traditionally stationary) in opposite directions. For drones or any propeller utilizing device (fans, pumps, and boat motors), the oppositely rotating propellers are configured to move the surrounding air (or liquid) in the same direction. Since either the rotor or stator contains electromagnetic field coils, oppositely spinning armatures or stators require an ingenious electrical power supply assembly to electrify the field coils. CR Flight’sTM various patent pending high-RPM and high-current power transfer assemblies accomplish this transfer of current with amazing efficiencies.
Various SpiritTM CR motor configurations have been designed, including: the FIG. 1 SpiritTM CR motor version in which the CR motor is positioned above the power transfer assembly; the FIG. 1A SpiritTM CR motor version in which the CR motor is positioned below the power transfer assembly; and the FIG. 2A SpiritTM CR motor version in which the power transfer assembly is positioned within the CR motor. These all have standard plug-and-play motor mounts for easy attachment to commonly available drones.
Compared to standard equivalent drone motors, CR Flight’sTM SpiritTM CR motors: 1) require ~35% less electrical power input at high power demand; 2) produce up to ~200% more on-demand thrust; and 3) run up to ~50% cooler. These tested facts translate into: 1) significant longer flight times; 2) greater payload capacity; and 3) much longer motor life.
CR Flight’sTM currently has no direct competitors. Some dual propeller drones do exist; however, those drones utilize either back-to-back separate motors with one propeller on each motor or co-axial versions that employ two separate motors with co-axial shafts having one shaft going to each propeller. CR Flight’sTM CR motors require only a single motor to drive both propellers, therefore, lighter and more energy efficient.
CR FlightTM plans to distribute their SpiritTM CR motors by marketing existing CR motor sizes or customer-requested sizes directly to motor/drone companies and by licensing their CR technologies to suitable entities.
Future projects for CR FlightTM include expansion into large ventilation fans for buildings, heat exchange fans for AC units, wind generation, and land/water propulsion systems.
CR FlightTM will be attending the Commercial UAV Exposition in Las Vegas this coming October.