Communication system and method employing line replaceable equipment racks on an aircraft

• US 8,120,894 B2
• Filed: 01/17/2008
• Issued: 02/21/2012
• Est. Priority Date: 01/17/2008
• Status: Active Grant

• Current Assignee: Northrop Grumman Systems Corporation (Northrop Grumman Corporation)
• Original Assignee: Northrop Grumman Systems Corporation (Northrop Grumman Corporation)
• Inventors: Zavidniak, Martin P., Shabra, Dale J.
• Primary Examiner(s): THOMAS, BRADLEY H
• Application Number:
  US12/015,872
• Publication Number:
  US 20090184574A1
• Time in Patent Office: 1,496 Days
• Field of Search: 361/624, 361/622, 361/724, 361/752, 361/644, 361/648, 307/9.1
• US Class Current: 361/624
• CPC Class Codes: B60R 16/0215 Protecting, fastening and routing means therefor

Abstract

Systems and methods are provided for assembling a communications system on an aircraft. An intrabus, including communication lines and power lines, is detachably mounted within the aircraft. At least one intrabus interface panel provides access to the intrabus. A plurality of line replaceable equipment racks (LRERs) are preassembled prior to being loaded onto the aircraft and each includes electronic equipment affixed within the LRER and at least one rack interface panel that provides access to the electronic equipment. A plurality of cables couple the at least one rack interface panel of each LRER to the at least one bus interface panel.

Claims

1. A communication system assembled on an aircraft, the system comprising:

an intrabus detachably coupled mounted within the aircraft, the intrabus comprising communication lines and power lines;

at least one intrabus interface panel that provides access to the intrabus;

a plurality of line replaceable equipment racks (LRERs), each LRER being preassembled prior to being loaded onto the aircraft and comprising electronic equipment affixed within the LRER and at least one rack interface panel that provides access to the electronic equipment; and

a plurality of cables that couple the at least one rack interface panel of each LRER to the at least one bus interface panel;

wherein the intrabus comprises a first intrabus having a first level of security and a first intrabus interface panel, and a second intrabus having a second level of security and a second intrabus interface panel, wherein a security level of each LRER of the plurality of LRERs is assigned based on a coupling of the rack interface panel of a given LRER of the plurality of LRERs to one of the first intrabus interface panel and the second intrabus interface panel, wherein the first and second security levels are different security levels.

2. The system of claim 1, further comprising a power distribution unit that receives and distributes power from a power distribution unit of the aircraft to the intrabus, such that power can be provided to the electronic equipment at each of the plurality of LRERs through the intrabus.

3. The system of claim 1, wherein at least one of the plurality of LRERs further comprises a mounting element that releasably engages with an L-bracket mounted on the floor of the aircraft.

4. The system of claim 1, wherein the intrabus is detachably mounted to a bulkhead of the aircraft and is coupled to antenna lines and power lines derived from the aircraft.

5. The system of claim 1, wherein the first intrabus and the second intrabus have different dedicated communication lines and power lines.

6. The system of claim 1, wherein the plurality of LRERs comprises a computer LRER station, a server data storage LRER and at least one radio LRER station.

7. The system of claim 6, wherein the at least one intrabus interface panel comprises an intrabus computer interface panel and an intrabus radio interface panel and the computer LRER has a computer rack interface panel configured to interface with the intrabus computer interface panel and the at least one radio LRER has a radio rack interface panel configured to interface to the intrabus radio interface panel.

8. The system of claim 1, wherein each of the plurality of LRERs are pretested prior to being loaded on the aircraft.

9. The system of claim 1, wherein the intrabus and the at least one cable are preassembled and pretested prior to being loaded on the aircraft.

10. The system of claim 1, wherein the communication lines comprise control lines, data lines, voice lines and antenna lines.

11. The system of claim 1, wherein the at least one intrabus interface panel comprises a plurality of intrabus interface panels distributed at different locations on a bulkhead of the aircraft.

21. The system of claim 1, wherein each of the plurality of LRERs further comprises a plurality of handles to facilitate carrying of a given LRER of the plurality of LRERs.

12. A communication system assembled on an aircraft, the system comprising:

a first intrabus detachably mounted within the aircraft, the first intrabus comprising a first set of communication lines and a first set of power lines;

a first intrabus interface panel that provides access to the first intrabus;

a second intrabus detachably mounted within the aircraft, the second intrabus comprising a second set of communication lines and a second set of power lines;

a second intrabus interface panel that provides access to the second intrabus;

a plurality of line replaceable equipment racks (LRERs), each LRER being preassembled prior to being loaded onto the aircraft and comprising electronic equipment affixed within the LRER and at least one rack interface panel that provides access to the electronic equipment; and

a plurality of cables that couple the at least one rack interface panel of each LRER to one of the first intrabus interface panel and the second intrabus interface panel;

wherein the first intrabus has a first level of security and the second intrabus has a second level of security, wherein a security level of each LRER of the plurality of LRERs is assigned based on a coupling of the rack interface panel of a given LRER of the plurality of LRERs to one of the first intrabus interface panel and the second intrabus interface panel, wherein the first and second security levels are different security levels.

13. The system of claim 12, further comprising a power distribution unit that receives and distributes power from a power distribution unit of the aircraft to the first intrabus and the second intrabus, such that the power of the first intrabus and second intrabus are isolated from one another.

14. The system of claim 12, wherein the first intrabus is detachably mounted to a floor of a bulkhead of the aircraft and the second intrabus is detachably mounted to a mid-cabin wall of the bulkhead of the aircraft.

15. The system of claim 12, wherein the plurality of LRERs comprises a first computer LRER and a first radio coupled to the first intrabus and a second computer LRER and a second radio coupled to the second intrabus.

16. The system of claim 12, wherein each of the plurality of LRERs are pretested prior to being loaded on the aircraft.

17. The system of claim 12, wherein the first intrabus, the second intrabus and the plurality of cables are preassembled and pretested prior to being loaded on the aircraft.

18. A method of providing a communication system on an aircraft, the method comprising:

building a plurality of line replaceable equipment racks (LRERs), each LRER comprising electronic equipment affixed within the LRER and at least one rack interface panel that provides access to the electronic equipment;

detachably mounting a first intrabus having a first level of security within the aircraft, the first intrabus comprising;

an intrabus interface panel;

communication lines; and

power lines;

detachably mounting a second intrabus having a second level of security within the aircraft, the second intrabus comprising;

an intrabus interface panel;

communication lines; and

power lines;

coupling antenna lines and power lines derived from the aircraft to the first intrabus and the second intrabus;

manually loading the plurality of LRERs onto the aircraft;

electrically connecting each rack interface panel of each of the plurality of LRERs to an intrabus interface panel of one of the first intrabus and the second intrabus; and

assigning a security level of to each of the plurality of LRERs based on the electrically connecting, wherein the first and second security levels are different security levels.

19. The method of claim 18, further comprising testing each of the plurality of LRERs prior to manually loading the plurality of LRERs onto the aircraft.

20. The method of claim 18, further comprising testing the communication system prior to the detachably mounting an intrabus within the aircraft and the manual loading of the plurality of LRERs onto the aircraft.