Propeller balancing using inflight data

Patent metadata

Field	Value
Publication number	US-10611501-B2
Application number	US-201715611001-A
Country	US
Kind code	B2
Filing date	Jun 1, 2017
Priority date	Mar 23, 2016
Publication date	Apr 7, 2020
Grant date	Apr 7, 2020

Abstract

There is described herein a propeller balancing system and method that selects at least a portion of received propeller vibration data by comparing received aircraft data collected concurrently with the propeller vibration data with at least one customizable flight criterion, and identifying the portion of the vibration data acquired at a time when the aircraft data meets the at least one customizable flight criterion. The selected portion of the propeller vibration data is analyzed to assess a vibration level of the propeller and a balancing need is signaled when the vibration level reaches a threshold.

First claim

The invention claimed is:

1. A method for propeller balancing of an aircraft, the method comprising:
receiving propeller vibration data comprising speed, phase, and magnitude of vibration, the propeller vibration data having been collected in-flight using at least one sensor;
receiving aircraft data collected in-flight from at least one aircraft system concurrently with the propeller vibration data;
comparing the aircraft data with at least one customizable flight criterion to identify a time period when the aircraft data meets the at least one customizable flight criterion;
selecting from the speed, phase and magnitude of vibration a portion thereof collected during the time period;
analyzing the selected portion of the speed, phase and magnitude of vibration to assess a vibration level of the propeller; and
outputting an alert indicating a balancing need when the vibration level reaches a threshold.

2. The method of claim 1 , wherein the at least one customizable flight criterion is operator-specific.

3. The method of claim 1 , wherein the at least one customizable flight criterion is mission-specific.

4. The method of claim 1 , further comprising determining a balancing solution for the aircraft when the vibration level reaches the threshold.

5. The method of claim 4 , wherein determining a balancing solution comprises identifying at least one weight and a placement location for the at least one weight to balance the propeller.

6. The method of claim 1 , wherein receiving the propeller vibration data and receiving the aircraft data comprises receiving for multiple flights of the aircraft, and wherein analyzing the selected portion of the propeller vibration data comprises analyzing over the multiple flights to monitor the vibration level of the propeller.

7. The method of claim 1 , wherein receiving the propeller vibration data and receiving the engine and aircraft data comprises receiving at a ground server from the aircraft through a wireless transmission.

8. The method of claim 1 , wherein the at least one customizable flight criterion is assigned to a fleet of aircraft.

9. The method of claim 1 , wherein the at least one customizable flight criterion is customizable in both criteria and value.

10. A system for aircraft propeller balancing, the system comprising:
a processing unit; and
a memory, communicatively coupled to the processing unit and comprising computer-readable program instructions executable by the processing unit for:
receiving propeller vibration data comprising speed, phase, and magnitude of vibration, the propeller vibration data having been collected in-flight using at least one sensor;
receiving aircraft data collected in-flight from at least one aircraft system concurrently with the propeller vibration data;
comparing the aircraft data with at least one customizable flight criterion to identify a time period when the aircraft data meets the at least one customizable flight criterion;
selecting from the speed, phase and magnitude of vibration a portion thereof collected during the time period;
analyzing the selected portion of the speed, phase and magnitude of vibration to assess a vibration level of the propeller; and
outputting an alert indicating a balancing need when the vibration level reaches a threshold.

11. The system of claim 10 , wherein the at least one customizable flight criterion is operator-specific.

12. The system of claim 10 , wherein the at least one customizable flight criterion is mission-specific.

13. The system of claim 10 , wherein the program instructions are further executable for determining a balancing solution for the aircraft when the vibration level reaches the threshold.

14. The system of claim 13 , wherein determining a balancing solution comprises identifying at least one weight and a placement location for the at least one weight to balance the propeller.

15. The system of claim 10 , wherein receiving the propeller vibration data and receiving the aircraft data comprises receiving for multiple flights of the aircraft, and wherein analyzing the selected portion of the propeller vibration data comprises analyzing over the multiple flights to monitor the vibration level of the propeller.

16. The system of claim 10 , wherein receiving the propeller vibration data and receiving the engine and aircraft data comprises receiving at a ground server from the aircraft through a wireless transmission.

17. The system of claim 10 , wherein the at least one customizable flight criterion is assigned to a fleet of aircraft.

18. The system of claim 10 , wherein the at least one customizable flight criterion is customizable in both criteria and value.

19. A non-transitory computer readable medium having stored thereon computer-readable program instructions executable by a processor for:
receiving propeller vibration data comprising speed, phase, and magnitude of vibration, the propeller vibration data having been collected in-flight using at least one sensor;
receiving aircraft data collected in-flight from at least one aircraft system concurrently with the propeller vibration data;
comparing the aircraft data with at least one customizable flight criterion to identify a time period when the aircraft data meets the at least one customizable flight criterion;
selecting from the speed, phase and magnitude of vibration a portion thereof collected during the time period;
analyzing the selected portion of the speed, phase and magnitude of vibration to assess a vibration level of the propeller; and
outputting an alert indicating a balancing need when the vibration level reaches a threshold.

Assignees

• Pratt & Whitney Canada

Inventors

• Wirth Richard Brian
• Winchcomb Robert
• Calvert Bruce
• Wigny Robert

Classifications

• B64F5/60

  Testing or inspecting aircraft components or systems · CPC title

• B64C11/008

  characterised by vibration absorbing or balancing means · CPC title

• B64F5/40 Primary

  Maintaining or repairing aircraft · CPC title

• B64D45/00 Primary

  Aircraft indicators or protectors not otherwise provided for · CPC title