Small airliner powered by two electric motors would seat up to 12 passengers and cheaply fly trips under 1,000 miles (1,600 km)
The small plane is the first of several planned by Zunum Aero, which said it would seat up to 12 passengers and be powered by two electric motors, dramatically reducing the travel time and cost of trips under 1,000 miles (1,600km).
Zunum’s plans and timetable underscore a rush to develop small electric aircraft based on rapidly evolving battery technology and artificial intelligence systems that avoid obstacles on a road or in the sky.
In a separate but related development, Boeing said on Thursday it planned to acquire a company that specialises in electric and autonomous flight to help its own efforts to develop such aircraft.
Several companies, including Uber Technologies and European planemaker Airbus, are working on electric self-flying cars.
Zunum does not expect to be the first to certify an electric-powered aircraft with regulators. Rather, it is aiming to fill a market gap for regional travel by airlines, where private jets and commercial jetliners are too costly for many to use.
Zunum’s planes would be intended to fly from thousands of small airports around big cities to cut regional travel times and costs.
“Airlines are very keen to know how to fly a shorter distance and make money on it,” said Matt Knapp, co-founder and chief aeronautic engineer of the Kirkland, Washington-based company.
A flight from Silicon Valley to Los Angeles, for instance, would leave from Palo Alto, San Carlos, Hayward or Reid Hillview airports and arrive in Santa Monica, Burbank, Hawthorne or San Gabriel Valley airports. The cost would be about $120 one way, the company said.
The travel time of over four hours would be cut in half by avoiding the crowds and security lines at big hubs that are required for larger planes. About 96% of US air traffic travels through 1% of its airports, leaving thousands of small airports virtually untapped, Knapp said.
Electric-vehicle batteries, such as those made by Tesla and Panasonic, would power Zunum’s motors, although Zunum has no commitment with either company. A supplemental jet-fuel engine and electrical generator would be used to give the plane a range of 700 miles and ensure it stayed aloft after the batteries are exhausted, Knapp said.
Zunum plans to make a larger plane seating up to 50 passengers at the end of the next decade, and the range of both would increase to about 1,000 miles as battery technology improved, Knapp said.
The planes eventually would fly solely on battery power and were being designed to fly with one pilot and to eventually be remotely piloted, he said.
Recent advances in battery technology, lightweight electric motors and carbon composite airframes would cut the cost of flying Zunum’s aircraft to about eight cents per seat-mile, about one-fifth that of a small jet or turboprop plane, Knapp said.
“We’re getting airline pricing down on a small plane and doing it for short distances,” Knapp said. “That kind of aircraft doesn’t currently exist.”
Zunum first announced its plans for hybrid-electric aircraft in April, and revealed that Boeing HorizonX and JetBlue Technology Ventures had invested in its initial round of venture funding. On Thursday it disclosed specifications and a timetable for the vehicle entering service.
Zunum says the plane would cruise at about 340mph (550kph) and at altitudes of about 25,000 feet (7,600 meters) – slower and lower than conventional jets.
The motor, which Zunum is designing, will drive a fan similar to the bypass fan on a jet engine, but without a jet’s combustion. Zunum has started talks with plane makers about building the airframe, and it is building non-flying prototypes of the powertrain to test batteries, the electrical system, software and other components, Knapp said.
Current battery technology can only power the plane for about 100 miles so a fuel-powered engine would be used to generate electricity to power the motors for additional range.
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