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
The development of a quick change battery pack system that can be easily removed from the aircraft for recharging will be necessary. The idea of having a customer by an aircraft and rent a battery from the dealer provides a revenue stream not previously seen in aviation. Additionally dealers providing charging services to the battery pack systems for his customers can amortize the cost of a charging system and eliminate the necessity for each customer to buy their own charging system. The ability to be able to fly and return to the airport for a quick change of their battery pack in exchange for another allows the electric flight paradigm to provide for an entire day’s worth of flying while not having to invest in large battery systems either initially or for a long term operational strategy. This allows for the dealers to amortize the cost of batteries and upgrade constantly as the technology changes.
Partnering with electric motor providers
Schulze Controller
This is the future-XXL-40.304K controller. This is my latest find in the world of controllers capable of 400 amp peak power output ideally suited for the Plettenberg predator 37 motor. Built-in cooling fins on the bottom of the controller that works in conjunction with the passive rear fuselage cooling ducting system built into the rear fairing. At high power outputs cooling is a relatively big issue.
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.
Active and passive Cooling systems
The Nova 15
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
The Nova 30
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
The Nova 150
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
