Method for separated flow detection
AssigneeRaytheon Technologies Corporation
InventorDmitriy B. Sidelkovskiy
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Abstract
A method to predict an onset of flow separation from a surface of an inner barrel of a nacelle is disclosed. In various embodiments, the method includes determining a static pressure distribution about the inner barrel surface of the nacelle; determining a mean static pressure value and a minimum static pressure value using the static pressure distribution; determining a separation indicator value using the mean static pressure value and the minimum static pressure value; and comparing the separation indicator value against a separation threshold value.
Claims20
A method to predict an onset of flow separation from a surface of an inner barrel of a nacelle, comprising:
- determining a static pressure distribution about the inner barrel surface of the nacelle;
- determining a mean static pressure value and a minimum static pressure value using the static pressure distribution;
- determining a separation indicator value using the mean static pressure value and the minimum static pressure value;
- and
- comparing the separation indicator value against a separation threshold value.
A system to predict an onset of flow separation from a surface of an inner barrel of a nacelle, comprising:
- a plurality of static pressure sensors distributed about the surface of the inner barrel;
- and
- a controller configured to:
- calculate a static pressure distribution about the inner barrel surface of the nacelle using data provided to the controller from the plurality of static pressure sensors;
- calculate a mean static pressure value and a minimum static pressure value using the static pressure distribution;
- calculate a separation indicator value using the mean static pressure value and the minimum static pressure value;
- and
- compare the separation indicator value against a separation threshold value.
A gas turbine engine, comprising:
- a nacelle having an inner barrel surface;
- a plurality of static pressure sensors spaced circumferentially about the inner barrel surface;
- a controller configured to:
- calculate a static pressure distribution about the inner barrel surface of the nacelle using data provided to the controller from the plurality of static pressure sensors;
- calculate a mean static pressure value and a minimum static pressure value using the static pressure distribution;
- calculate a separation indicator value using the mean static pressure value and the minimum static pressure value;
- and
- compare the separation indicator value against a separation threshold value.
Dependencies are inferred from the claim text.