Data storage in a helmet system

1. A helmet system comprising:

a communication interface configured to receive a plurality of aircraft data comprising a copy of data stored in a crash survivable memory unit of an aircraft received on a first wireless link, and the aircraft data comprising flight data including one or more of aircraft and engine parameters received on a second wireless link;

a helmet visualization system configured to display data visible to an aircraft operator wearing the helmet system;

a memory system comprising a data storage system configured to store the aircraft data and an operational memory configured to store values for display on the helmet visualization system;

a processing system operably coupled to the communication interface and the memory system, the processing system configured to:

format the aircraft data, received through the communication interface, into a plurality of time sequential records;

store the time sequential records in the data storage system of the memory system;

manage storage within the data storage system of the memory system as a circular buffer; and

store, in the memory system, user data associated with the aircraft operator; and

a helmet housing, wherein the memory system is disposed in the helmet housing.

2. The helmet system of claim 1 , wherein the data storage system comprises nonvolatile memory enclosed in a detachable housing that is separable from the helmet housing of the helmet system.

3. The helmet system of claim 1 , wherein the data storage system comprises a data buffer configured to queue the time sequential records prior to writing to nonvolatile memory of the data storage system.

4. The helmet system of claim 3 , further comprising a backup power supply configured to provide a temporary power source to complete writing of the time sequential records from the data buffer into the nonvolatile memory.

5. The helmet system of claim 1 , wherein the communication interface comprises a physical data bus configured to transfer data over a physical medium between the helmet system and one or more external communication nodes.

6. The helmet system of claim 1 , wherein the communication interface comprises a wireless communication link configured to transfer data wirelessly between the helmet system and one or more external communication nodes.

7. The helmet system of claim 1 , wherein the processing system is further configured to compress the aircraft data to reduce a volume of data stored in the time sequential records.

8. The helmet system of claim 7 , wherein the processing system is further configured to encrypt the aircraft data after compression and prior to being written to nonvolatile memory of the data storage system.

9. The helmet system of claim 1 , wherein the communication interface is configured to:

authenticate communication to provide the aircraft data to the helmet system;

communicate with a maintenance system offboard of the aircraft; and

authenticate communication to access data stored in the memory system.

10. The helmet system of claim 1 , wherein the data storage system comprises a data buffer configured to queue the time sequential records as partially formed records until complete records are populated from two or more asynchronous sources prior to writing to nonvolatile memory of the data storage system.

11. A method comprising:

receiving a plurality of aircraft data at a communication interface of a helmet system of an aircraft, wherein the aircraft data comprises a copy of data stored in a crash survivable memory unit of the aircraft received on a first wireless link, and the aircraft data comprising flight data including one or more of aircraft and engine parameters received on a second wireless link;

formatting, by a processing system of the helmet system, the aircraft data, received through the communication interface, into a plurality of time sequential records;

storing the time sequential records in a memory system of the helmet system;

managing storage within the memory system as a circular buffer; and

storing, in the memory system, user data associated with an aircraft operator;

wherein the memory system comprises a data storage system configured to store the aircraft data and an operational memory configured to store values for display on a helmet visualization system of the helmet system, wherein the helmet visualization system is configured to display data visible to the aircraft operator wearing the helmet system; and

wherein the memory system is disposed in the helmet housing.

12. The method of claim 11 , wherein the data storage system comprises nonvolatile memory enclosed in a detachable housing that is separable from the helmet housing of the helmet system.

13. The method of claim 11 , wherein the data storage system comprises a data buffer configured to queue the time sequential records prior to writing to nonvolatile memory of the data storage system.

14. The method of claim 13 , further comprising:

configuring a backup power supply to provide a temporary power source to complete writing of the time sequential records from the data buffer into the nonvolatile memory.

15. The method of claim 11 , wherein the communication interface comprises a physical data bus configured to transfer data over a physical medium between the helmet system and one or more external communication nodes.

16. The method of claim 11 , wherein the communication interface comprises a wireless communication link configured to transfer data wirelessly between the helmet system and one or more external communication nodes.

17. The method of claim 11 , further comprising:

compressing the aircraft data to reduce a volume of data stored in the time sequential records.

18. The method of claim 17 , further comprising:

encrypting the aircraft data after compression and prior to being written to nonvolatile memory of the data storage system.

19. The helmet system of claim 1 , wherein the processing system is disposed in the helmet housing.

20. The helmet system of claim 19 , wherein the communication interface is disposed in the helmet housing.