Component management system

• US 6,983,648 B2
• Filed: 06/05/2001
• Issued: 01/10/2006
• Est. Priority Date: 06/08/2000
• Status: Expired due to Fees

• Current Assignee: BAE Systems Plc
• Original Assignee: BAE Systems Plc
• Inventors: Grout, Michael S
• Primary Examiner(s): RAEVIS, ROBERT R
• Application Number:
  US10/297,255
• Publication Number:
  US 20030159493A1
• Time in Patent Office: 1,680 Days
• Field of Search: 73/7, 73/8, 73/86, 731/29, 731/46
• US Class Current: 73/129
• CPC Class Codes: G06Q 10/06 Resources, workflows, human or project management; Enterprise or organisation planning; Enterprise or organisation modelling

Abstract

A system in the form of a database allowing operators of aircraft or any other equipment where components are subject to wear to manage all the maintenance, analysis and provisioning aspects of such components e.g. brake and wheel components. The system is able to predict component, e.g. tyre, life to a high degree of accuracy based on the measured wear rate of the component or a related component such as each tyre'"'"'s related brake unit.

Claims

1. A method of managing spares for a fleet having first components, where each of the first components have a wear rate, said method including the steps of:

measuring a wear rate of second components, where the wear rate of said second components is related to the wear rate of the first components;

using the measured wear rate of the second components to determine the predicted life of the first components; and

determining the number of spares of the first components based upon the predicted life of the first components.

2. The method according to claim 1 in which the first components comprises aircraft tyres and the second components comprises aircraft brakes operable to brake wheels upon which the tyres are mounted.

3. The method according to claim 2 in which the step of measuring the wear rate of the second components includes taking periodic measurements of the length of a wear pin for the brakes.

4. The method according to claim 1, when applied to managing fleet spares at more than one location, including the step of determining the number of spares to be provided at each location, based upon the locations of equipment utilising the first components.

5. The method according to claim 1, including the step of comparing predicted lives of components to determine any wear rate imbalance therebetween.

6. The method according to claim 5, when applied to an aircraft braking system, in which a wear rate imbalance detected between components is used to identify one of a malfunctioning brake and a wheel anti-skid unit.

7. The method according to claim 1 including the step of providing a historical record of maintenance carried out on components.

8. The method according to claim 2, using data selected from:

brake wear pin fitting date;

date of commencement of component monitoring;

number of aircraft landings at the date of commencement of component monitoring;

date when brake or wheel last changed;

runway type;

weather conditions.

9. The method according to claim 2, in which the predicted life of the tyre (PTL) is determined according to the relationship:

PTL=((A/B)×

(C−

D))+D

where

A =Fleet average brake wear rate, measured in inches/landing;

B =Brake wear rate for subject wheel, measured in inches/landing;

C =Fleet average tyre life, measured in numbers of landings;

D =Minimum tyre life, measured in numbers of landings.

10. The method according to claim 1 including the step of storing the results of said measuring step in a computer database.

11. A method of managing spares for a fleet of first components, where each of the first components has a wear rate, said fleet including second components where each of the second components has a wear rate which is related to the wear rate of the first components, said method including the steps of:

measuring the wear rate of second components;

predicting the predicted life of the first components using the measured wear rate of the second components; and

determining a required number of spares of said first components based upon the predicted life of said first components.

12. A method of managing spares according to claim 11, wherein said first components comprise tires and said second components comprise brakes.

13. A method of managing spares according to claim 12, wherein said tires and said brakes are aircraft tires and aircraft brakes.

14. A method of managing spares according to claim 13, wherein said measuring step comprises the measuring of a wear pin associated with each of said aircraft brakes.

15. A method of managing spares according to claim 11, wherein said method further includes the step of comparing the predicted life of each of said first components and indicating any imbalance of wear rate among said first components.