FLIGHT Library

FLIGHT Library - I

Flight Control Algorithms

Overview

FLIGHT Library is a collection of: 1) complete flight control laws, and control law building blocks such as filters, logic functions, and utility blocks, 2) signal selection and fault detection algorithms, and 3) general aircraft system models.

Complete Control Algorithms

  • Primary flight control – pitch, roll and yaw axes
  • Autopilot control – pitch, roll and yaw axes
  • Autoland functions (CATIII)
  • Auto-throttle
  • Load alleviation

 

Filters

  • Lead/Lag
  • Notch/Bandpass
  • Complementary

 

Control Law Logic

  • Pitch, roll and yaw mode transitions

  • Air-to-ground transition
  • Control surface offload
  • Signal blending and latching

FLIGHT Library - II

Signal Selection, Fault Detection, and Redundancy Management Algorithms
 

Switches and Faders

  • Transient free
  • Linear and exponential fading

 

Failure Monitors

  • Hard-over
  • Slow-over
  • Oscillatory

 

Signal Voters

  • Dual
  • Triplex
  • Quad
  • In-line

FLIGHT Library - III

Aircraft & System Models
 

Aircraft Models

  • Aerodynamic build-up
  • Equations of motion
  • Standard atmosphere model
  • Ground reaction model
  • Wind and turbulence models

System Models

  • Linear actuators
  • Nonlinear actuators
  • Flight control computers
  • Data busses
  • Sensors
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