The head of Tesla and SpaceX, Elon Musk, has updated his forecast on the timing of the batteries of the appropriate energy capacity, which will create serial electric aircraft. He now believes that this will happen in the next 3-4 years.
Many companies are now developing experimental electric aircraft. One of the leading projects in this area is the Rolls-Royce ionBird electric aircraft project. Musk first mentioned the supersonic electric plane with vertical takeoff and landing in 2015, and then again in 2016. He also said that he was thinking about creating a separate company that will deal with aerial electrical equipment. In 2018, in the same episode of the American comedian Joe Rogan’s podcast, Elon Musk again talked about a supersonic electric plane with a vertical takeoff and landing.
In 2019, Musk, who is known to be an engineer himself, citing his own calculations a decade ago, said that lithium-ion batteries could be considered as a replacement for aviation kerosene when the energy density reaches 400 W · h / kg. He said then that the 400 W / kg limit would be exceeded in the next five years.