Fuel starvation

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British Airways Flight 38 crash-landed at London Heathrow in 2008 after its fuel lines became clogged with ice crystals. BA38 Crash.jpg
British Airways Flight 38 crash-landed at London Heathrow in 2008 after its fuel lines became clogged with ice crystals.

In an internal combustion engine, fuel starvation is the failure of the fuel system to supply sufficient fuel to allow the engine to run properly, for example due to blockage, vapor lock, contamination by water, malfunction of the fuel pump or incorrect operation, leading to loss of power or engine stoppage. [1] There is still fuel in the tank(s), but it is unable to get to the engine(s) in sufficient quantity. By contrast, fuel exhaustion (also called fuel depletion) is an occurrence in which the vehicle in question becomes completely devoid of usable fuel, with results similar to those of fuel starvation. [2]

Contents

All engine-powered modes of transport can be affected by fuel starvation, although the problem is most serious for aircraft in flight. Ships are affected to the extent that without propulsion they cannot maneuver to avoid collisions or beaching. On aircraft, fuel starvation is often the result of incorrect fuel management, for example by selecting to feed the engine from an empty tank while fuel is present in another one. [3]

When the fuel level is low, some aircraft are vulnerable to a specific type of fuel starvation known as unporting, which occurs when hard maneuvers, a steep climb, or a departure from coordinated flight causes the fuel to slosh away from the line leading to an engine. Some aircraft have special operating limitations on steep climbs with low fuel due to this concern. [4]

Fuel exhaustion and starvation incidents on aircraft

Many incidents have happened on aircraft where fuel exhaustion or starvation played a role. A partial list of these incidents follows:

1940s

The forward fuselage section of Lady Be Good, a B-24 Liberator which crashed in the Libyan Desert after running out of fuel Lady Be Good crash photos 1960 -3.jpg
The forward fuselage section of Lady Be Good, a B-24 Liberator which crashed in the Libyan Desert after running out of fuel

1950s and 1960s

1970s and 1980s

1990s and 2000s

2010 and later

Abandoned in-flight aircraft

A number of aircraft have been abandoned by their crew (both intentionally and sometimes accidentally) when the aircraft has continued on its own until fuel exhaustion caused it to crash:

See also

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References

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