Quoting cmf (Reply 6): "Thanks to the higher energy density of biofuel, it has been possible to reduce the fuel consumption by more than one per cent."
That is no negligible amount, and a very interesting result - it's like getting an engine PIP "for free". This could help justify the (still) higher cost of biofuel.
Quoting cmf (Reply 6): SO now it is about cost and getting to 100% biofuel.
Or rather about scale, which is what will bring down the cost to a competitive level. Biofuels have been proven successfully on an operational level, now they need to be produced - and bought by airlines - in an industrially meaningful quantity.
The highlight of the biofuel trial at Lufthansa will be the first scheduled transatlantic flight to the United States, which is now planned for 12 January 2012. A Boeing 747-400, carrying about 40 tonnes of a biosynthetic fuel mix, will fly from Frankfurt to Washington. With this flight alone, Lufthansa expects to reduce CO2 emissions by 38 tonnes, equivalent to the CO2 emissions of six scheduled flights between Frankfurt and Berlin.
// You know you're an aviation enthusiast when you look at your neighbour's cars and think about fleet commonality.