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Embry-Riddle Works to Advance Sustainable, Environmentally Friendly Urban Air Mobility Vehicles

New technology developed at Embry-Riddle Aeronautical University's Eagle Flight Research Center (EFRC) converts power from an efficient turbocharged engine to highly concentrated electrical power, which can then be transferred to electric vertical take-off and landing (eVTOL) vehicles.


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Embry-Riddle Aeronautical University

Aug 18, 2020, 09:00 ET

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(Photo taken before physical-distancing guidelines.) Dr. Richard “Pat” Anderson (right) joins students Keletso Mmalane (left) and Uvesh Pawar at Embry-Riddle. (Photo: Embry-Riddle/Daryl LaBello)
(Photo taken before physical-distancing guidelines.) Dr. Richard “Pat” Anderson (right) joins students Keletso Mmalane (left) and Uvesh Pawar at Embry-Riddle. (Photo: Embry-Riddle/Daryl LaBello)

DAYTONA BEACH, Fla., Aug. 18, 2020 /PRNewswire-PRWeb/ -- New Technology Offers Almost Five Times More Power than Batteries

A newly developed hybrid power plant promises a ratio of electric power-to-weight that is 4.6 times better than any existing battery system, Embry-Riddle Aeronautical University researchers reported. This 460% improvement suggests a sustainable, environmentally friendly method to keep urban air mobility (UAM) vehicles aloft.

“Urban air mobility vehicles are going to solve many of our current problems in cities ... Future aviation options will be clean, quiet and more sustainable.” - Aerospace Engineering Professor Dr. Richard “Pat” Anderson of Embry-Riddle's Eagle Flight Research Center

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The new technology – developed at Embry-Riddle's Eagle Flight Research Center (EFRC) – converts power from an efficient turbocharged engine to highly concentrated electrical power, which can then be transferred to electric vertical take-off and landing (eVTOL) vehicles. The research is being externally supported by a $2.5 million contract.

"Urban air mobility vehicles are going to solve many of our current problems in cities," said Aerospace Engineering Professor Dr. Richard "Pat" Anderson, director of the EFRC. "Air taxis will relieve roadway congestion, and they will also be greener if they replace cars that are stuck in traffic. Future aviation options will be clean, quiet and more sustainable."

Within Embry-Riddle's hybrid power plant, gasoline feeds into a lightweight, turbocharged aluminum engine, which transfers engine power from the crankshaft into a high-performance electric generator. The generator pumps out DC (direct current) electricity for use on an aircraft.

Using this method, "The emissions benefits begin with the operation of the engine and generator at their most efficient settings at all times," said Embry-Riddle Project Manager David Spitzer. "Furthermore, with UAM the flight times are shorter because there is zero delay due to traffic, road layout, stoplights, or any of the other limitations we currently accept on the ground."

The system currently supports a 160-horsepower engine, Anderson said. "If you want an aircraft that's really quiet, redundant and safe," he added, "this is the configuration you need. Multi-rotor flight is simply not possible with a mechanical approach. We had to make the mental jump to electric."

From Air Cargo to Flying Taxis

The next generation of aircraft, suitable for vertical takeoff and offering much greater energy efficiency and lower environmental impact are mostly focused on power stored in batteries, Anderson noted. With today's technology that means a very short trip before recharge is needed – until now.

Initially, the new Embry-Riddle hybrid power plant is configured to support air cargo vehicles designed to carry a payload up of up to 500 pounds and incorporating six dual-rotor systems and 12 propellers. Because Embry-Riddle researchers are capturing data on every aspect of their hybrid power system, however, their design principles could serve a variety of purposes.

"We're working to understand the subtleties of the system in terms of mechanical, thermal, and electrical engineering," Spitzer said. "We're using hundreds of sensors to study the hybrid power plant's temperatures, pressure, air flow, fluid flow rates, and more. We can apply those insights to develop lighter-weight aircraft, or we can scale up the design to fly a person to work in the morning."

Anderson and colleagues have been working on an Embry-Riddle personal air vehicle (PAV-ER) that uses a distributed electric drive system, including eight small electric motors and eight variable-pitch rotors – a design akin to multiple miniature helicopters. This patented, eco-friendly approach provides vertical lift and improves aviation safety by using many redundant rotors, Spitzer noted: "The use of rotors instead of fixed-pitch propellers is another key technology here at EFRC. We have proven that this important capability reduces noise over populated areas, increases efficiency, and improves safety of UAM for so many configurations under development."

At Embry-Riddle, graduate students play a key role in shaping the future of transportation. Directed by Anderson, students employ a powerful state-of-the-art data acquisition system to better understand the dynamics of the new hybrid powerplant.

"The results are certain to help accelerate the commercial development of UAM," said Maj Mirmirani, dean of the College of Engineering. "The university has been at the forefront of this emerging technology for the past decade, when it first began to lay the groundwork for the future of hybrid electric propulsion. Our talented students and faculty are uniquely positioned to propel this new industry forward."

Embry-Riddle's Eagle Flight Research Center was a pioneer in the field of green aviation, launching the first-ever hybrid gas/electric aircraft, the Eco Eagle, as part of NASA's Green Flight Challenge in 2011.

About Embry-Riddle Aeronautical University

Reporters worldwide contact Embry-Riddle Aeronautical University for content experts in all aspects of aviation, aviation business, aerospace, engineering and STEM-related fields. Our faculty experts specialize in unmanned and autonomous systems, security and intelligence, air traffic and airport management, astronomy, human factors psychology, meteorology, spaceflight operations, urban air mobility and much more. Visit the Embry-Riddle Newsroom for story ideas.

Embry-Riddle educates nearly 33,500 students at its residential campuses in Daytona Beach, Florida, and Prescott, Arizona, at approximately 125 Worldwide Campus locations and through online degree programs ranked by U.S. News & World Report as being among the Nation's Top Five.

SOURCE Embry-Riddle Aeronautical University

Related Links

https://www.erau.edu

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