As someone who worked in the airline space for years, there is a lot of interest in hydrogen and other fuel cells by airlines… and not a lot of interest by Boeing and Airbus. Sadly Bombardier was planning to tackle this post CSeries but we all know how Canada betrayed their own and let Airbus ravage them for an excellent plane for literally pennies. Sadly it looks like “sustainable” are the only short term solution but there’s literally only enough production for a fraction of a percent of flights to run on these.

Loads of work to be done and frankly it’ll likely take a startup if any of this is to happen pre-2040. One of the big reasons I’m interested in Boom is not their supersonic plane but their desire to significantly ramp up syn/biofuels production for aviation.

Boom is leaving the tough engine engineering to others, so it might be a glider.

Do you mean a supersonic glider is possible?

Unless the entire production pipeline, from mining to machining parts and tools involved in making a plane, no.

Planes literally in the air are not the only source of green house gas connected to flying planes.

Make it 5 times more expensive, to start with something that works.

The energy has to come from somewhere. So… probably not.