The EMG-6 aircraft was designed from the onset to be able to leverage the new electric technologies that are being developed. In the very early stages of development we identified the primary difficulty being associated with the pace of development with electric motors, controllers, and batteries. The aircraft was designed with this in mind. The intent of the aircraft was to be able to adapt to the changing technology allowing for the newest of technologies to be bolted to the aircraft as sub-assembly powerplant packages. The airframe has been designed to be able to accept multiple different powerplant options.
Battery quick-change system
Partnering with electric motor providers
Plettenberg Predator 37 Powerplant System
RASA Carbon Fiber Propeller Blades
Currently we have identified two propeller blade systems that will work excellent with this powerplant combination. Additionally we have manufactured a in-flight adjustable propeller hub system to be utilized with one of the blades. These blades have the ability to function as folding propeller blades to reduce drag. And we have already started the design process on in-flight adjustable propeller blades.
The ability to experiment with low cost (due to the size) propeller blades has resulted in the industry manufacturing some of the most efficient propeller blades in the industry. These propeller blades are extremely light weight, high strength, and aerodynamically efficient. The design allows for a much more favorable span loading and reduced induced tip loss. additional the price for individual blades make for a cost effective addition to the entire powerplant package.
Propeller Technologies to leverage.
The propeller blades on the EMG-6 were designed to be ground adjustable. The primary reason was to provide some options for testing.
In the future we intend to work on the ability to have a in-flight adjustable propeller as well as the current capability on the EMG-6 to have the propeller blades fold to the rear of the motor reducing the drag in the normal flight profile.
On the latest developments front.
The Plettenberg company has just released three new motors.
Two of these new motors look ideally suited for the ultralight aircraft market both the nova That 15 and 30. The nova That 150 is a bit large for ultralight type aircraft but you can see the progress in this technology and what might be coming for the future of electric aviation.
Click On the link below to get more information from the Plettenberg website.
A 15 KW motor weighing in at 2.5 kg turning 4900 RPM at 80 V developing 30 NM of torque.
This is approximately 20 hp and 5.5 pounds
A 30 kW motor weighing in at 5 kg turning at 3300 RPM at 120 V developing 105 NM of torque.
This is approximately 40 hp and 11 pounds
A 150 KW motor weighing in at 11.5 KG, turning at 6000 RPM developing 250 Nm of torque at 350 V.
This is approximately 201 hp and 25.5 pounds