Questions tagged [refueling]

The process of supplying an aircraft with more fuel.

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71
votes
6answers
23k views

Why are fuel tanks in the wings filled first, and why are they used last?

When fueling airliners, why is fuel filled first in the tanks in the wings and then the center tanks? And why do they use fuel from the center tanks first and then from the tanks in the wings? From ...
22
votes
5answers
22k views

How long does it take to refuel a big jumbo jet?

How long does it take to refuel a big jumbo jet? And what about a smaller A320. I'm talking in terms of time.
29
votes
3answers
18k views

Why don't airliners use in-air refueling systems?

Right now if an airliner wants to fly a really long distance (eg., a Boeing 787 flying from Seattle to Tokyo), it has to load itself down with lots and lots of fuel, which in turn weighs thousands and ...
22
votes
1answer
907 views

How is fuel vapor dealt with at large airports?

When I fill my tank at a gas station, I can see fuel vapor coming out of the tank. I imagine the space above the aircraft tank has fuel vapor mixing with air (at lower oxygen than normal thanks to ...
15
votes
2answers
7k views

What is pressure refuelling and how does it work?

In this answer to this question, "pressure refueling" was given as a reason to not worry about fuel vapors escaping when refueling larger aircraft. What is pressure refueling and how does it work?
13
votes
2answers
7k views

Is it normal practice to refuel commerical planes whilst boarding is taking place?

The other day, I was on a KLM Boeing 737. I had just sat down in my seat, and the captain was making announcement. He said something along the lines of, As we are refuelling at this moment, please ...
12
votes
1answer
6k views

Do tanker aircraft distribute their own fuel?

Do tanker aircraft, (such as the KC-135, KC-10, S-3B, etc), distribute fuel from their own fuel tanks, or is it strictly from a separate cargo tank? Obviously, some cargo tanks are going to be ...
16
votes
14answers
15k views

Why is mid-air refueling worth it? (or is it at all?)

Surely, mid-air refueling is a cool thing, but is it worth it? It's obvious that the military, for one, has some requirements to keep aircraft airborne so that they can keep patrolling, for example. ...
29
votes
5answers
5k views

How do aircraft refueling in-air deal with wake turbulence?

Many fighter planes have the capability to refuel in air. When a plane moves in air, turbulence is generated at its back. To refuel, the fighter plane must come near to the parent plane (which has ...
5
votes
2answers
4k views

How can I correctly calculate fuel for a Cessna 152?

I'm learning to fly in a C152 and I've found the fuel calculation to be a little ambiguous. Based on information from my instructor, Internet and the Cessna 152 Information Manual (1980), I've home ...
22
votes
3answers
7k views

How is it safe for helicopters and Ospreys to refuel in mid-air?

How do military helicopters like the Blackhawk and CH-53, as well as the V-22 Osprey, perform mid-air refueling without their rotor blades (periodically and accidentally) contacting the drogue or fuel ...
14
votes
1answer
973 views

How are in-air refuelling craft grounded to each other?

This answer mentions that before refueling equipment is connected the F-16 and the refueling vehicle must be connected to each other. This does not seem to be the case for in-air refueling. Why is ...
8
votes
3answers
2k views

How do large airport refuelling systems work?

As I am sitting on board my plane and have been informed that there may be a three-hour delay due to a pressure problem in the fuelling system at the destination, it seems like an appropriate moment ...
8
votes
3answers
6k views

Which airports have the highest fuel upload?

Which airports consume the most fuel for aircraft refueling, and how much fuel do they use? I was able to find that "Heathrow uses about 20m litres of fuel a day", but it isn't easy to find figures ...
8
votes
3answers
1k views

How should Isopropyl Alcohol be used as an AvGas Fuel System Icing Inhibitor?

I understand that 100% Isopropyl Alcohol (IPA) is used as a Fuel System Icing Inhibitor (FSII) additive in aviation gasoline systems—including 87 through 100LL fuel types—for cold weather operations. ...