The planes would use vertical take-off and touchdown (VTOL) expertise to rise to a excessive altitude, earlier than utilizing battery-powered propulsion to succeed in speeds in extra of 1,236km/h (768mph).
The polymath billionaire mentioned the one factor stopping him from creating the next-generation plane is his present workload.
Mr Musk at present heads two multi-billion greenback firms – SpaceX and Tesla – in addition to neurotech startup Neuralink and tunnel-digging enterprise The Boring Firm. He’s additionally the co-founder of the synthetic intelligence analysis laboratory OpenAI and the daddy of six youngsters.
“I’m so dying to do a supersonic, electrical VOTL [sic] jet, however including extra work will make my mind explode,” he tweeted on Thursday, utilizing emojis for the ultimate two phrases.
It isn’t the primary time Mr Musk has spoken of his ambition to design an electrical jet, having beforehand detailed an idea throughout considered one of his appearances on the Joe Rogan podcast.
“I’ve a design for a airplane,” he mentioned. “The thrilling factor to do can be some type of electrical vertical takeoff and touchdown, supersonic jet.”
The idea would use two totally different propulsion techniques: one to raise the airplane off the group and into the sky, the opposite to propel the craft ahead at supersonic speeds.
“The attention-grabbing factor about an electrical airplane is that you just need to go as excessive as doable however you want a sure vitality density within the battery pack as a result of it’s a must to overcome gravitational potential vitality,” he mentioned.
“When you’ve overcome gravitational potential vitality and also you’re at a excessive altitude, the vitality you employ in cruise may be very low, after which you possibly can recapture a big a part of your gravitational potential vitality on the way in which down.
“The upper you go, the sooner you’ll go for a similar quantity of vitality. And at a sure altitude you possibly can go supersonic with much less energy-per-mile – quite a bit much less vitality per mile – than plane at 35,000 toes.”
In 2013, Mr Musk got here up with one other concept for a brand new types of transport referred to as the Hyperloop. With out the capability to work on it himself, he wrote a whitepaper for the 1,000kph vacuum tube pods, which different startups then used to develop their very own variations of it.
Mr Musk subsequently funded competitions to encourage its growth, with the hope that Hyperloop networks may present an eco-friendly and extra environment friendly different to airplane journey.