Over the shaft fuel pumping system
This patent describes a high speed rotary liquid pump, adapted to be driven by a shaft in the core of a gas turbine engine. It comprises a rotatable impeller having a plurality of straight blades extending radially from an annular hub, the hub having a central aperture of sufficient size to engage the shaft for rotation therewith; a pump housing surrounding the impeller and defining a generally annular pump cavity for receiving the rotatable impeller; the housing also defining an annular fluid inlet aperture leading axially into the cavity adjacent the hub, a shield member axially adjacent the aperture and disposed between fluid entering the aperture and the shaft, whereby circumferential swirl of the fluid due to contact with the shaft is minimized, and at least one fluid outlet passage extending tangentially from the periphery of the cavity adjacent the tips of the blades.
- Assignee:
- Allied-Signal Inc., Morris Township, Morris County, NJ (United States)
- Patent Number(s):
- US 5022228; A
- Application Number:
- PPN: US 7-581960
- OSTI ID:
- 5881517
- Resource Relation:
- Patent File Date: 13 Sep 1990
- Country of Publication:
- United States
- Language:
- English
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