It depends on the type of aircraft
Reduced certain type of drag (air resistance) and thus improves fuel efficiency and range.
Aircraft use three types of fuel tanks using: (1)integral (2)rigid removable (3)bladder.
Depends on the size and type of Aircraft. Link provided below llist fuel consumption for various Aircraft.
jet and/or rocket propelled aircraft{jet/rocket}.
Different types of aircraft use different types of fuel. Small aircraft generally use 110 octane, 100 octane-low lead or some newer engines use diesel. Airplanes that fly using turbo-prop or turbine systems use Jet A or Jet B type fuel which is a type of kerosene fuel.
EMBRAER of BRAZIL, has an aircraft flying on Ethanol, It is called IPANEMA and it is a cropduster.
Depends on the aircraft. There are piston driven aircraft, which burn low lead petrol, there are jet aircraft, which will burn some type of jet fuel, and there are military aircraft, which, in the US and NATO forces, use a fuel known as JP-8.
The cost depends on the type of aircraft and the location of the launch. If it's your plane on your field, the cost is only fuel.
I would think that a Green Aircaraft is an aircraft that is eco-friendly like one that runs on eco-friendly material or type of fuel. An aircraft that is less or not bad for the environment.
ramjet
kkisok