Anti-vortex shedding generator for apu support
AssigneeHamilton Sundstrand Corporation
InventorJay M. Francisco
Life of this patent
Estimating the term…
Abstract
An assembly for use with a power-producing unit includes an annular case, a hub positioned radially inward of the case, a fluidic flow path defined between the case and the hub, a plurality of support tubes each extending between the case and the hub, and a flow modifying structure positioned on an exterior surface of at least a first one of the support tubes and configured to reduce vortex shedding of a passing fluid.
Claims20
An assembly for use with a power-producing unit, the assembly comprising:
- an annular case;
- a hub positioned radially inward of the case, wherein a fluidic flow path is defined between the case and the hub;
- a plurality of support tubes each extending between the case and the hub;
- and
- a flow modifying structure positioned on an exterior surface of at least a first one of the support tubes and configured to reduce vortex shedding of a passing fluid.
The assembly of 2, wherein the discrete elements each comprise a substantially elliptical shape.
A method for use with operating a power unit, the method comprising:
- generating a fluid flow having swirl;
- passing the fluid flow around a tubular support;
- and
- modifying the fluid flow passing the tubular support with a flow modifying structure to reduce vortex shedding effects.
An exhaust case assembly for use with an auxiliary power unit having a turbine section, the assembly comprising:
- an annular case;
- a hub positioned radially inward of the case, wherein a fluidic flow path is defined between the case and the hub;
- a plurality of support tubes each extending between the case and the hub;
- and
- a flow modifying structure positioned on an exterior surface of at least a first one of the support tubes and configured to reduce vortex shedding of a passing fluid, wherein a configuration of the flow modifying structure varies along an axis of the first one of the support tubes.
Dependencies are inferred from the claim text.