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A liquid propellant management device for placement in a liquid storage tank adjacent an outlet of the storage tank to substantially reduce or eliminate the formation of a dip and vortex in the liquid of the tank, as well as prevent vapor ingestion into the outlet, as the liquid drains out through t

A liquid propellant management device for placement in a liquid storage tank adjacent an outlet of the storage tank to substantially reduce or eliminate the formation of a dip and vortex in the liquid of the tank, as well as prevent vapor ingestion into the outlet, as the liquid drains out through the outlet. The liquid propellant management device has a first member adapted to suppress the formation of a vortex of a liquid exiting the storage tank. A plate is affixed generally perpendicular to the first member, wherein the plate is adapted to suppress vapor ingestion into the outlet by reducing a dip in a surface level of the liquid leaving the tank. A second member is affixed to the second side of the plate. The second member ensures that the plate is wet with liquid and assists in positioning bubbles away from the outlet.

대표청구항 ▼

A liquid propellant management device for placement in a liquid storage tank adjacent an outlet of the storage tank to substantially reduce or eliminate the formation of a dip and vortex in the liquid of the tank, as well as prevent vapor ingestion into the outlet, as the liquid drains out through t

A liquid propellant management device for placement in a liquid storage tank adjacent an outlet of the storage tank to substantially reduce or eliminate the formation of a dip and vortex in the liquid of the tank, as well as prevent vapor ingestion into the outlet, as the liquid drains out through the outlet. The liquid propellant management device has a first member adapted to suppress the formation of a vortex of a liquid exiting the storage tank. A plate is affixed generally perpendicular to the first member, wherein the plate is adapted to suppress vapor ingestion into the outlet by reducing a dip in a surface level of the liquid leaving the tank. A second member is affixed to the second side of the plate. The second member ensures that the plate is wet with liquid and assists in positioning bubbles away from the outlet. ure. 27. The method of claim 26 wherein the cleavage structure comprises a 5' flap. 28. A composition comprising a target nucleic acid sequence, a probe having a secondary structure that changes upon binding of said probe to a target nucleic acid sequence, and a nuclease; and wherein said probe and said target nucleic acid can bind to form a cleavage structure comprising duplex and single-stranded nucleic acid that can be cleaved by said nuclease wherein said cleaving is performed at a cleaving temperature, and wherein said secondary structure of said probe when not bound to said target nucleic acid sequence is stable at or below said cleaving temperature. 29. The composition of claim 28 further comprising an oligonucleotide primer. 30. A kit for generating a signal indicative of the presence of a target nucleic acid sequence in a sample, comprising a probe having a secondary structure that changes upon binding of said probe to a target nucleic acid sequence and a FEN nuclease; wherein said probe can bind to a target nucleic acid sequence to form a cleavage structure comprising duplex and single-stranded nucleic acid that can be cleaved by said nuclease; and wherein said cleaving is performed at a cleaving temperature, and wherein said secondary structure of said probe when not bound to said target nucleic acid sequence is stable at or below said cleaving temperature. 31. The kit of claim 30 further comprising an oligonucleotide primer. 32. The kit of claim 30, wherein said probe comprises at least one labeled moiety. 33. The kit of claim 30, wherein said probe comprises a pair of interactive signal generating labeled moieties effectively positioned to quench the generation of a detectable signal when said probe is not bound to said target nucleic acid. 34. The kit of claim 33 wherein said labeled moieties are separated by a site susceptible to nuclease cleavage, thereby allowing the nuclease activity of said nuclease to separate the first interactive signal generating labeled moiety from the second interactive signal generating labeled moiety by cleaving at said site susceptible to nuclease cleavage, thereby generating a detectable signal. 35. The kit of claim 33 or 34, wherein said pair of interactive signal generating moieties comprises a quencher moiety and a fluorescent moiety.