trapped fuel

trapped fuel

[′trapt ′fyül]
(engineering)
The fuel in an engine or fuel system that is not in the fuel tanks.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

trapped fuel

The fuel that always remains in tanks and pipes and is, hence, unusable. Also called undrainable fuel.
An Illustrated Dictionary of Aviation Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved
References in periodicals archive ?
An earthquake revealed in shale rock previously trapped fuel deposits.
Second, FPAS is only a tool and can lie to you if you let it, especially if you have trapped fuel. I knew our descent to 10,000 feet would significantly reduce our fuel-remaining at Midway, but once we leveled off and saw 6,400 pounds of fuel, I trusted that we had enough.
Directional drilling bores horizontally sometimes a mile or more through the richest layer of rock, allowing more of the trapped fuel to make it into the well.
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.
Distinct from short-circuiting, incomplete combustion is defined as the fraction of the energy in the trapped fuel that is not released during combustion.
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.
That way, all losses, except the loss through scavenging losses, were referenced to the trapped fuel energy.
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.
In summary, the variation in the amount of trapped fuel across cylinders is more significant at late IVC timings in part due to the larger amount of the total injected fuel that is ultimately pushed into the intake manifold.
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.