Flight control module merged into the integrated modular avionics

• US 6,443,399 B1
• Filed: 07/14/2000
• Issued: 09/03/2002
• Est. Priority Date: 07/14/2000
• Status: Expired due to Fees

• Current Assignee: Honeywell International Inc.
• Original Assignee: Honeywell International Inc.
• Inventors: Todd, John, Yount, Larry
• Primary Examiner(s): Barefoot, Galen L.
• Application Number:
  US09/616,196
• Time in Patent Office: 781 Days
• Field of Search: 244/75.R, 244/76.R, 244/221, 244/227, 244/229, 244/195-197
• US Class Current: 244/196
• CPC Class Codes: B64C 13/503 Fly-by-Wire
• CPC Class Codes: G05D 1/0077 using redundant signals or controls
• CPC Class Codes: Y02T 50/40 Weight reduction

Abstract

In an aircraft using fly-by-wire technology, the flight control functions have been integrated into the integrated modular avionics (“IMA”). The new flight control module (“FCM”) resides on the same data bus as the other modules in the IMA and receives power from the same power supply. In addition, the FCM is also connected to a separate power supply to add redundancy to the system. Several benefits arise from this configuration of an FCM. There is no longer a separate chassis needed for the flight control functions, thus resulting in a reduction in weight. In addition, the FCM now has access to all of the data on the IMA bus, instead of a limited amount of data over an ARINC 629 bus. The FCM provides augmentation signals to the actuator control electronics (“ACE”) to aid in the flying of the aircraft. In the event of a failure of the FCM, the ACE still provides enough control to fly the airplane.

Claims

1. An fly-by-wire control system comprising,

an integrated modular avionics unit;

an actuator control electronics system;

a hydraulic actuator;

wherein

said integrated modular avionics comprises

a power supply;

a processor;

a plurality of inputs accepting sensor data from various sensors located throughout an aircraft; and

a flight control module configured to process incoming flight control data and output various flight control data, wherein

said flight control module is coupled to an actuator control electronics system which is external to said flight control module; and

said actuator control electronics system is configured to operate a hydraulic actuator coupled to one primary flight control surface.

2. The fly-by-wire control system of claim 1 wherein,

said flight control module provides augmentation information to said actuator control electronics system.

3. The fly-by-wire control system of claim 2 wherein,

said actuator control electronics system is coupled to a control stick operated by a pilot;

and wherein

said actuator control electronics system contains a mode of operation wherein said actuator control electronics system operates said flight control surface based on the movements of said control stick without reference to said augmentation information from said flight control module.

4. The fly-by-wire control system of claim 2 wherein,

said actuator control electronics system contains a mode of operation wherein said actuator control electronics system operates said flight control surface based on the movements of said control stick in conjunction with said augmentation information from said flight control module.