Contents
What are the primary hazards and potential errors associated with Refuelling an aircraft?
The primary risk is unintended ignition of fuel vapour, which can occur by a single spark. A sufficient quantity of fuel vapour to create a high risk of ignition may result from spillage arising from procedural errors, leaks, aircraft tank venting or failure of pressurized fuel lines or their couplings.
How is aircraft refueling done?
To complete an aerial refueling, the tanker and receiver aircraft rendezvous, flying in formation. Once in position, the operator extends the boom to make contact with the receiver aircraft. Once in contact, fuel is pumped through the boom into the receiver aircraft.
Why is the top of each tank vented?
Each tank is vented (or pressurised) to allow air into the tank to take the place of burned fuel; otherwise, the tank would be in negative pressure which would result in engine fuel starvation. A vent also allows for changes in atmospheric pressure and temperature.
How are the fuel tanks vented?
You most likely know that fuel tanks need ventilation in order to allow the fuel to continue to pump without causing a vacuum. This can either be through the gas cap itself, or via some sort of breather tube.
What percentage of fuel tank is needed for venting?
Each fuel tank must have an expansion space of not less than two percent of the tank capacity. This is waved if the tank vent discharges clear of the airplane, in which case no expansion space is required. It must be impossible to fill the expansion space inadvertently with the airplane in the normal ground attitude.
How does a pressure refuelling system work on a plane?
A fueling control panel allows the fueler to fill the tanks to the amount called out by the flight plan. These large aircraft still have an overwing fueling port for those times when the pressure fueling system is inoperative. There is nothing to prevent fuel vapors from escaping to atmosphere.
What kind of aircraft is used for aerial refueling?
Aerial refueling — also called air-to-air refueling and tanking — is the process of transferring fuel from a military tanker aircraft to another military aircraft, including fixed-wing jets and helicopters. An Air Force KC-10 Extender conducts an aerial refueling with a French Dassault Rafale over Southwest Asia, Feb. 1, 2020.
When was the first air to air refueling?
The first air-to-air refueling took place in 1923 between two De Haviland DH-4B Army Air Service airplanes. During World War II, the Army Air Forces modified B-24 Liberators, so they became tankers that refueled the B-17 Flying Fortress, extending the bombers’ range to 1,500 miles.
Can a KC 135 refuel two planes at once?
KC-135s can even refuel two aircraft simultaneously. An F-15 Eagle from the 125th Fighter Wing receives fuel from a KC-135R Stratotanker over Miami, Jan. 28, 2020.