System and method of transmitting data from an aircraft

• US 9,191,053 B2
• Filed: 04/09/2014
• Issued: 11/17/2015
• Est. Priority Date: 09/16/2004
• Status: Active Grant

• Current Assignee: Harris Corporation (L3Harris Technologies, Inc.)
• Original Assignee: Harris Corporation (L3Harris Technologies, Inc.)
• Inventors: Ziarno, James J., Gallagher, Shawn
• Primary Examiner(s): AJIBADE AKONAI, OLUMIDE
• Application Number:
  US14/248,696
• Publication Number:
  US 20140206303A1
• Time in Patent Office: 587 Days
• Field of Search: 455/558, 455/431, 455/95, 455/97, 455/98, 455/66.1
• US Class Current: 1/1
• CPC Class Codes: H01Q 1/28 Adaptation for use in or on aircraft, missiles, satellites, or balloons
• CPC Class Codes: H04B 1/3822 specially adapted for use in vehicles H04B1/3827 takes precedence
• CPC Class Codes: H04B 7/18506 Communications with or from aircraft, i.e. aeronautical mobile service
• CPC Class Codes: H04L 67/12 specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
• CPC Class Codes: Y04S 40/18 Network protocols supporting networked applications, e.g. including control of end-device applications over a network

Abstract

A system and method of transmitting data from an aircraft includes a PC card that acquires aircraft data and transmits the aircraft data over a radio frequency communications signal into the skin of the aircraft, which radiates the radio frequency communications signal to a location remote from the aircraft.

Claims

1. An aircraft communications apparatus, comprising:

a central processing unit (CPU) providing processing power and wireless transmission functionality and an interface circuit that is capable of interfacing with an aircraft Data Acquisition Unit;

a wireless transceiver controlled by the CPU, the wireless transceiver connecting the CPU to a wireless network;

a memory coupled to the CPU through a communication bus, the memory storing flight performance data, wherein the wireless transceiver wirelessly transmits the flight performance data stored in the memory to a ground station through the wireless network; and

a logic circuit connected to the CPU and memory and connected to the Data Acquisition Unit and configured to allow the Data Acquisition Unit to control data extraction from the Data Acquisition Unit into the memory and allow the CPU to forward data from the memory into the transceiver for transmission through the wireless network.

2. The aircraft communications apparatus according to claim 1, wherein the CPU determines whether there is a connection available between the aircraft communications circuit and the ground station.

3. The aircraft communications apparatus according to claim 1, wherein the memory is configured to store wireless network attributes for different airports.

4. The aircraft communications apparatus according to claim 3, wherein the wireless network attributes include one or more of network identification, basic transmission control protocol (TCP) information, power regulation, encryption data, and authentication data.

5. The aircraft communications apparatus according to claim 1, wherein the data extraction from the Data Acquisition Unit into memory is controlled by software embedded in the Data Acquisition Unit.

6. The aircraft communications apparatus according to claim 1, further comprising a circuit bus coupled to the CPU and connecting the CPU to the Data Acquisition Unit via the logic circuit.

7. The aircraft communications apparatus according to claim 1, wherein the CPU employs security measures to secure an access to the flight performance data.

8. The aircraft communications apparatus according to claim 7, wherein the security measures include encrypting the flight performance data during transmission.

9. The aircraft communications apparatus according to claim 7, wherein the security measures include employing wired equivalent privacy (WEP) during transmission.

10. The aircraft communications apparatus according to claim 7, wherein the security measures include employing wireless-fidelity protected access (WPA) during transmission.

11. The aircraft communications apparatus according to claim 7, wherein the security measures include employing extensible authentication protocol (EAP) during transmission.

12. The aircraft communications apparatus according to claim 1, wherein the wireless network is a wireless-fidelity (Wi-Fi) 802.11b network.

13. The aircraft communications apparatus according to claim 1, wherein CPU and wireless transceiver enable remote access to the Data Acquisition Unit and Data Acquisition Unit peripherals from the ground station.

14. The aircraft communications apparatus according to claim 1, further comprising a PC card body forming a PC card and supporting the CPU, wireless transceiver, memory and logic circuit.

15. An aircraft communications apparatus that interfaces with a Data Acquisition Unit (DAU) in an aircraft for transmitting aircraft data received from the DAU, comprising:

a memory for storing aircraft data received from the DAU;

a radio transmitter for receiving aircraft data from the memory and transmitting the aircraft data over a radio frequency signal and passively coupling the RF energy into the skin of the aircraft, which is operative as a passive radiator to re-radiate the radio frequency communications signal to a location remote from the aircraft such that the RF communications signal is transmitted without use of a separate antenna mounted on the aircraft;

a processor operatively connected to the memory and radio transmitter for reading and forwarding data from memory to the radio transmitter; and

a logic circuit operative with the memory, processor and DAU for controlling the downloading of data from the DAU to the memory and the reading and forwarding of data from the memory to the radio transmitter without conflict between the processor and DAU.

16. The aircraft communications apparatus according to claim 15, wherein said logic circuit comprises a field programmable gate array.

17. The aircraft communications apparatus according to claim 15, wherein said transmitter comprises a spread spectrum transmitter for transmitting aircraft data over a spread spectrum communications signal.

18. The aircraft communications apparatus according to claim 17, wherein said transmitter is operative for transmitting said spread spectrum communications signal over a frequency hopping spread spectrum communications signal.

19. The aircraft communications apparatus according to claim 17, wherein said transmitter is operative for transmitting said spread spectrum communications signal over a direct sequence spread spectrum communications signal.

20. The aircraft communications apparatus according to claim 15, further comprising a PC card body forming a PC card and supporting the memory, radio transmitter, processor and logic circuit.

21. A method of transmitting aircraft data comprising:

collecting aircraft data within a memory of an aircraft communications circuit that is interfaced with a Digital Acquisition Unit (DAU) contained on an aircraft;

retrieving the aircraft data from the memory based on commands received from a processor contained within the aircraft communications circuit; and

transmitting the retrieved aircraft data from a transmitter contained within the aircraft communications circuit along a radio frequency signal and passively coupling the RF energy into the skin of the aircraft, which is operative as a passive radiator to re-radiate the radio frequency communications signal to a location remote from the aircraft such that the RF communications signal is transmitted without use of a separate antenna mounted on the aircraft.

22. A method according to claim 21, wherein the aircraft data comprises flight performance data.

23. A method according to claim 21, wherein the aircraft data comprises aircraft engine data.

24. A method according to claim 21, wherein the aircraft data comprises in-flight entertainment data.

25. A method according to claim 21, wherein the aircraft data is related to at least one of aircraft contents, passenger data, aircraft departure and arrival, passenger transactions, or data from a sky marshall.

26. A method according to claim 21, which further comprises transmitting the aircraft data over a spread spectrum communications signal.

27. A method according to claim 26, which further comprises transmitting the aircraft data over a frequency hopping spread spectrum communications signal.

28. A method according to claim 26, which further comprises transmitting the aircraft data over a direct sequence spread spectrum communications signal.

29. A method according to claim 21, which further comprises transmitting the aircraft data to a Central Maintenance Display Unit (CMDU) indicating in real-time the health and status of aircraft systems.

30. A method according to claim 21, which further comprises supporting the aircraft communications circuit as a PC card.