The KC-135 has been in service to the U.S. Air Force since June of 1957, and since then has refueled nearly every aircraft the the inventory from that time onward.
KC-135s typically refuel using what is known as an Air Refueling Boom, which is a flyable, arm-like device attached to the rear of the aircraft. The KC-135 is also capable of being outfitted with one and/or two Probe-and-Droge-type refueling devices. These are the MPRS (Multi-Point Refueling System) Pods, and the Probe-and-Drouge Adapter.
This flexibility in function allows the KC-135 to refuel both Boom-type receivers, which are standard to the U.S. Air Force inventory, and Drogue-type receivers, which are typical of the U.S. Naval inventory.
The only commonly used, fixed-wing military aircraft that cannot be refueled by the KC-135 are basic models of the C-130, the U-2, and all UAVs (such as the MQ-9 "Reaper" and RQ-4 "Global Hawk").
Airplanes refuel in the ground. Trucks carrying airplane fuel come and refuel the aircraft.Some jet aircraft have the capability of refuelling in the air.
Aircraft built by the military to refuel other capable aircraft (other military craft basically) in midair.
In KC135, KC10 etc. K=tanker C=cargo so KC= Tanker/cargo aircraft
yes, you can buy an extra refuel tank ( is like a big bag ) and sit it in the interior of the aircraft, of course you will need extra room behind you.
Not a good idea, as the fuel is considered contaminated. The fuel is usually recycled.
50 feet with engines off.
The same way they would fly from New York to Los Angeles. If they were attempting to fly around the world this would require in-flight refueling or they will have to stop and refuel.
The Boeing KC-97 Stratotanker was used first in 1950 and onward until replaced by the KC-135. Although the KC-97 gave good service to the USAF for several years, its piston engines made it slow in comparison to the new generation of jet-powered aircraft it had to refuel, and the midair refueling operation was often difficult.
to be fair it all depends on the size of the aircraft. a Hercules could but it is slightly smaller than your average civil aircraft. i would suppose so yes. yes its possible
Separation Valve
Yes they do. Chicago O'Hare is a big hub and the home of United Airlines.
Two