Beyond Fossil Fuel?
I read from a recent OPEC report that fossil fuel supplies until 2030 will be 'adequete'!
Since for example the USAF intends to keep the B52 bomber fleet until 2048 what thought has gone into aircraft engine technology beyond the use of fossil fuel.
As fuel supplies run dry then prices will rocket. The days of the jet engine will become numbered. Since we only have 30-50 years should we not look at new ways to propel aircraft in flight?