trapped fuel

trapped fuel

[′trapt ′fyül]
(engineering)
The fuel in an engine or fuel system that is not in the fuel tanks.

trapped fuel

The fuel that always remains in tanks and pipes and is, hence, unusable. Also called undrainable fuel.
References in periodicals archive ?
Distinct from short-circuiting, incomplete combustion is defined as the fraction of the energy in the trapped fuel that is not released during combustion.
Second, FPAS is only a tool and can lie to you if you let it, especially if you have trapped fuel.
An earthquake revealed in shale rock previously trapped fuel deposits.
He now faced the problem of having 4,000 pounds of trapped fuel in addition to his gear retraction failure, at night with poor weather.
This would enable the trapped fuel to drain into the engine and drop the pressure.
That way, all losses, except the loss through scavenging losses, were referenced to the trapped fuel energy.
At eight miles, we were transferring gas only from the main bags, and had 2,800 pounds of trapped fuel in the wings.
With 12,000 pounds of trapped fuel, the SOF calculated that Lt Howland's aircraft was too heavy to take an approach end cable, due to higher-than-normal approach speed, and also too heavy to stop on the wet runway for the same reason.
As a result of continually cross-bleeding the right engine to maintain reliable flight controls (after a series of subsequent flight-control failures), we trapped fuel in the No.
Without bleed air, I was left without normal oxygen, no ECS pressurization or cooling, no throttle boost, and 3,400 pounds of trapped fuel in nay external fuel tanks.
We were concerned about possible trapped fuel on the left side, and we were relieved to see the left system start to burn down.
Our new problem became the 6,600 pounds of trapped fuel in the No.