Automated propeller feather testing
AssigneePratt & Whitney Canada Corp.
InventorsBrant DUKE, Kenneth MATHESON
Life of this patent
Estimating the term…
Abstract
There is described herein methods and systems for testing a propeller feathering function. The method comprises monitoring a rotational speed over time of propeller blades of an aircraft, commanding an angle change of the propeller blades, comparing a post-angle change rotational speed of the propeller blades to an expected rotational speed without the commanded angle change and obtaining, by the processor, a rotational speed difference, and issuing a test passed signal when the rotational speed difference exceeds a threshold and a test failed signal when the rotational speed difference does not exceed the threshold.
Claims24
A computer-implemented method for testing a propeller feathering function, the method comprising:
- monitoring, by a processor of a computing device, a rotational speed over time of propeller blades of an aircraft;
- commanding, by the processor of the computing device, an angle change of the propeller blades;
- comparing, by the processor of the computing device, a post-angle change rotational speed of the propeller blades to an expected rotational speed without the commanded angle change and obtaining, by the processor, a rotational speed difference;
- and
- issuing, by the processor of the computing device, a test passed signal when the rotational speed difference exceeds a threshold and a test failed signal when the rotational speed difference does not exceed the threshold.
A system for testing a propeller feathering function, the system comprising:
- a memory;
- a processor coupled to the memory;
- and
- an application stored in the memory and comprising program code executable by the processor for:
- monitoring a rotational speed over time of propeller blades of an aircraft;
- commanding an angle change of the propeller blades;
- comparing a post-angle change rotational speed of the propeller blades to an expected rotational speed without the commanded angle change and obtaining, by the processor, a rotational speed difference;
- and
- issuing a test passed signal when the rotational speed difference exceeds a threshold and a test failed signal when the rotational speed difference does not exceed the threshold.
Dependencies are inferred from the claim text.