Method of reducing total temperature errors and multi-function probe implementing same
AssigneeRosemount Aerospace Inc.
InventorsDennis J. Cronin, Steve F. Alwin
Life of this patent
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Abstract
A method of generating, for an aircraft, a total air temperature compensated for recovery or deicing heater error includes measuring a total air temperature with a total air temperature probe. A local angle of attack for the total air temperature probe is determined. Then, a corrected total air temperature, compensated for recovery or deicing heater error, is generated as a function of the measured total air temperature and the determined local angle of attack for the total air temperature probe.
Claims17
A method of generating for an aircraft a total air temperature compensated for recovery or deicing heater error, the method comprising:
- measuring a total air temperature with a total air temperature probe;
- determining a local angle of attack for the total air temperature probe;
- and
- generating a corrected total air temperature, compensated for recovery or deicing heater error, as a function of the measured total air temperature and the determined local angle of attack for the total air temperature probe.
A multi-function probe for air data sensing comprising:
- a barrel having a plurality of pressure sensing ports for sensing a plurality of pressures;
- instrumentation coupled to the plurality of pressure sensing ports for providing electrical signals indicative of the plurality of pressures;
- an input receiving a measured total air temperature from a total air temperature probe;
- and
- processing circuitry coupled to the instrumentation and the input and configured to determine a local angle of attack for the total air temperature probe as a function of the electrical signals indicative of the plurality of pressures, the processing circuitry further being configured to generate a corrected total air temperature, which is compensated for recovery and deicing heater error, as a function of the measured total air temperature and the determined local angle of attack for the total air temperature probe.
Dependencies are inferred from the claim text.