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Trisafe Single Axis Flight Control System.

AD474100

Publication Date	1965
Personal Author	Ehlers, H. L.; Blosser, R. D.; Williams, H. O.
Page Count	136
Abstract	The TRISAFE Single Axis Flight Control System developed for the Research and Technology Division of the Air Force consists of a deliverable controller and simulator with associated recorder. This equipment is to be used primarily as a laboratory demonstration model of a triple redundant, self-adaptive flight control system. The controller incorporates the Autonetics developed triple redundant, analog circuit technique called TRISAFE that represents nearly optimum in redundancy, efficiency and reliability. To compensate for the normal increase in size and weight due to the triple redundancy, the use of a square wave 400 cps carrier has been employed to reduce the number of components, and molecular integrated circuits are used to reduce the size of the components. A multi-layer circuit board is used to further reduce the weight and volume of the controller. The controller measures 3 x 9.7 x 12 inches and weighs approximately 6 pounds. Plug-in modular packaging is used for maintainability. The controller is based on the dynamics of a high performance tactical aircraft and provides stability augmentation for the pitch axis. To provide for optimum gain throughout the performance range of the aircraft, a self-adaptive system is used. Known as the dither-adaptive technique, it employs a low level test signal to measure the response of the airframe and adjusts the gain accordingly. (Author)
Keywords	Flight control systems Adaptive control systems Systems engineering Flight simulators Airframes Pitch(Motion) Stabilization systems Integrated circuits Redundant components Automatic Failure(Mechanics) Corrections Reliability Analog systems
Source Agency	Non Paid Delimited ADS
NTIS Subject Category	51C - Aircraft 51E - Avionics
Corporate Authors	Autonetics Anaheim Calif
Document Type	Technical Report
Title Note	Final rept.
NTIS Issue Number	197716
Contract Number	AF33(615)-1479

Trisafe Single Axis Flight Control System.

Trisafe Single Axis Flight Control System.
AD474100

Publication Date	1965
Personal Author	Ehlers, H. L.; Blosser, R. D.; Williams, H. O.
Page Count	136
Abstract	The TRISAFE Single Axis Flight Control System developed for the Research and Technology Division of the Air Force consists of a deliverable controller and simulator with associated recorder. This equipment is to be used primarily as a laboratory demonstration model of a triple redundant, self-adaptive flight control system. The controller incorporates the Autonetics developed triple redundant, analog circuit technique called TRISAFE that represents nearly optimum in redundancy, efficiency and reliability. To compensate for the normal increase in size and weight due to the triple redundancy, the use of a square wave 400 cps carrier has been employed to reduce the number of components, and molecular integrated circuits are used to reduce the size of the components. A multi-layer circuit board is used to further reduce the weight and volume of the controller. The controller measures 3 x 9.7 x 12 inches and weighs approximately 6 pounds. Plug-in modular packaging is used for maintainability. The controller is based on the dynamics of a high performance tactical aircraft and provides stability augmentation for the pitch axis. To provide for optimum gain throughout the performance range of the aircraft, a self-adaptive system is used. Known as the dither-adaptive technique, it employs a low level test signal to measure the response of the airframe and adjusts the gain accordingly. (Author)
Keywords	Flight control systems Adaptive control systems Systems engineering Flight simulators Airframes Pitch(Motion) Stabilization systems Integrated circuits Redundant components Automatic Failure(Mechanics) Corrections Reliability Analog systems
Source Agency	Non Paid Delimited ADS
NTIS Subject Category	51C - Aircraft 51E - Avionics
Corporate Authors	Autonetics Anaheim Calif
Document Type	Technical Report
Title Note	Final rept.
NTIS Issue Number	197716
Contract Number	AF33(615)-1479