he estimates that synthetic fuel would cost $4-5 per gallon once all is said and done. so the oil price would have to be much higher than it is today for this to make sense.
currently there is still some potential for increasing the hydrogen content in the synthetic fuel gas, which is expected to be realised later by modifications of the turbines with limited efforts.
目前仍然有一些增加合成燃料气中的氢含量的潜能,这有待通过用有限的努力改造涡轮来实现。
this allows the military to put synthetic fuel in one tank and control feeding into the desired engines and put conventional fuel in the remaining fuel tanks for the remaining engines.
during the trials a c-17 flew on all four engines being powered by a 50:25/25 blend of jp-8; bio-fuel derived in part from animal fat; and synthetic fuel derived from coal.