Questions tagged [fuel-consumption]

The amount of fuel an aircraft burns during a specified time period or for a specified distance; also known as "fuel burn".

Fuel consumption (also known as fuel burn) can refer to either of two things:

  • Fuel Flow: The amount of fuel used per time. This depends on altitude, temperature and power setting.
  • Fuel Economy: The amount of fuel needed to fly a given distance. It typically depends on the chosen altitude and speed as well as environmental conditions like e.g. enroute winds.

Use this tag for questions about fuel consumption. Questions about regulations should be tagged instead, questions about fuel calculation should be tagged and questions about optimizations should be tagged .

For more information, see the Wikipedia article on Fuel economy in aircraft.

98 questions
1
vote
1 answer

Is the FF (Fuel Flow) the fuel consumption index?

I am creating a program to calculate the fuel needed to fly and I need to know the fuel cost of the plane. In the boeing 737-800 (PMDG), on the display that shows the plane's systems, there is the FF (Fuel Flow) field. I think that is the fuel…
JeanExtreme002
  • 1,371
  • 3
  • 13
  • 34
1
vote
1 answer

What are the conditions for the percentage power vs fuel consumption figures in the engine operator manual?

For the Lycoming O-160-A4A, the operator manual says in Economy Cruise, which is 75% Rated power and 2450 RPM, the engine produces 135 HP and burns 9.5 GPH. How were these figures determined? Were they in standard conditions at sea level, or on the…
Wayne
  • 11
  • 1
0
votes
0 answers

what would couse uneven fuel levels in a cessna 207?

I have problems whit the level in each tank after a flight of 3 hours. I usually use the right tank the first hour and then I change to the opposite, but when I check the level after that the rigt tank seems as if have not burned the fuel.