Rolls-Royce Aerospace manufactures jet engines that power most of the world’s aircraft. Despite their level of efficiency, they still emit many greenhouse gas emissions.
The company has been a leader in the development of air-conditioning systems for aircraft to help lead the world on a zero-emission flight. Getting there involves a lot of creativity. The main drawback is that batteries have a much lower power output than jet fuel per unit weight.
Let’s dig a little deeper. According to JetPack Aviation, a liter of jet fuel weighs 9.6 kW and weighs 0.8 kg. That means about 12 kWh per kilogram. In comparison, some of the best lithium-ion batteries have a power output of 265 Wh per kilogram. Net result? Jet fuel is about 50 times more per kilogram of jet fuel than jet batteries do.
But that is not all. While jet fuel is so dense, even the best combustion engines are not so efficient at converting that energy into forward movement. Jetpak’s internal combustion efficiency means only 14 times more power per 1000 pounds (453.59 kg) of jet fuel than 1000 pounds (453.59 kg) batteries. A lot of wasted energy goes into the atmosphere behind the engine.
The net result is much larger for an electric jet “fuel load” than a conventional jet aircraft. In fact, overcrowding batteries in an airplane will leave you with little to no cost to the cargo and passengers, even the pilot.
Rolls-Royce Aerospace has been working hard to develop an electric jet with a speed of 300 mph (483 km / h) for those who want to use the metric system, making it the fastest electric aircraft ever built. The plane, which was completed this week, made its first flight. It was in the air for 15 minutes. I’ll leave it up to you to convert that to parsecs if you want. And if you think 15 minutes isn’t too long, remember Wilber and Orville Wright’s first flight with Kitty Hawk lasted only 12 seconds, which led to some amazing surprises.
The Rolls-Royce Aerospace test flight “is the beginning of a major pilot test phase in which we will gather important performance data on the aircraft’s electrical and stimulus system,” he said. Strange thing. The company said the single-seat aircraft contained “the most powerful battery pack collected for the aircraft,” but did not provide details. Currently, a three-motor train with a capacity of 400 kW (500+ horsepower) uses 6,000 cell batteries.
The flight will arrive about a year after the first scheduled departure and six months after the taxi trials. Rolls-Royce is developing an air transport taxi with the aircraft manufacturer to provide “a market for all electric passenger aircraft.” He also worked with Simmons and Airbus on another electronic concept.
The project is being funded by the European Institute of Technology and the British government as the first step in creating all electric aircraft. “This is not just a world break. The advanced battery and stimulus technology developed for this program has exciting applications for the urban mobility market and could help make Jet Zero a reality, ”said Rolls-Royce CEO Warren East.
Eviation has developed a production protocol for 44 passenger electric jets 440 mile (815 km) and 220 kits (407.44 km / h, 253 mph, or 317 feet per second), if you will). United has invested in Sweden’s launch of Heart Aerospace and ordered the delivery of 100 electric short-haul aircraft by the end of the decade.
Electricity is coming, maybe not tomorrow, but soon. High-capacity batteries are the key to unlocking their capacity. Air travel accounts for about 7% of global emissions, so welcome anything that reduces emissions from aircraft. Our children certainly fly in electric planes and find nothing surprising about it.
Do you appreciate CleanTechnica’s originality? Consider being a member of CleanTechnica, a supporter, technician, or ambassador – or a supporter of Patrin.