Supplementing Haptic Feedback in Flight Envelope Protection Through Visual Display Indications

Haptic cues on the side stick are a promising method to reduce loss of control in-flight incidents. They can be intuitively interpreted and provide immediate support, leading to a shared control system. However, haptic interfaces are limited in providing information, and the reason for cues may not always be clear to pilots. This study presents...

Incremental Nonlinear Dynamic Inversion Control with Flight Envelope Protection for the Flying-V

To reduce the environmental impact of aircraft, technological innovations are required. The Flying-V could be one of these technical innovations, as research shows it could be up to 20 % more efficient than regular aircraft of the same size. The Flying-V however has low lateral control authority, and pitch<br/>break-up could occur for high...

Haptic feedback for flight envelope protection

Improving the safety level of aviation is vital to prevent serious accidents. One key area where improvements can be made is the prevention of loss of control occurrences, by preventing the aircraft state to pass beyond the limits from which no recovery is possible. Such improvements can focus on improved monitoring of the main flight parameters...

Design and evaluation of a Flight Envelope Protection haptic feedback system

This paper describes the design and evaluation of a shared control, haptic feedback system to communicate Flight Envelope Protection System intent. The concept uses a combination of stiffness feedback and vibration to communicate proximity of the aircraft state to flight envelope boundaries. In addition, a stick center shift can be applied by...

Model and Sensor Based Nonlinear Adaptive Flight Control with Online System Identification

Consensus exists that many loss-of-control (LOC) in flight accidents caused by severe aircraft damage or system failure could be prevented if flight performance could be recovered using the valid and remaining control authorities. However, the safe maneuverability of a post-failure aircraft will inevitably be reduced due to the malfunction. Non...

Investigation of Practical Flight Control Systems for Small Aircraft

Personal air transportation utilizing small aircraft is a market that is expected to grow significantly in the near future. However, seventy times more accidents occur in this segment as compared with the commercial aviation sector. The majority of these accidents is related to handling and control problems. In commercial aviation, Fly-By-Wire ...

An optimal control approach for estimating aircraft command margins

This dissertation presents an optimal control framework to determine a collection of open-loop command signals, that mathematically guarantees operation of a dynamical system within prescribed state constraints. The framework is applied to estimate real-time command margins for aircraft control systems so that, safe operation within the flight...