China
Africa
Explore chapters and articles related to this topic
Commercial Aircraft
Published in Scott Jackson, Systems Engineering for Commercial Aircraft, 2020
In recent years a new system has emerged called flight envelope protection. According to Airbus, Fly-by-wire [the use of digital rather than mechanical interfaces] enhances safety by allowing the programming of the flight envelope protection, which enables pilots to fly the aircraft freely but prevents any abnormal operations, such as stalling, flying too fast, or overstressing.(Airbus, 2013)
Commercial Aviation: A General Picture
Published in José Sánchez-Alarcos, Aviation and Human Factors, 2019
Of course, the evolution did not finish with the disappearance of the flight engineer and the ETOPS practice. Airbus introduced a new challenge: fly-by-wire. In short, fly-by-wire means that the flight controls give orders to a computer instead of having a direct mechanical/hydraulic link with the controlled surfaces.
Malaysia Airlines Flight 370
Published in Elizabeth A. Hoppe, Ethical Issues in Aviation, 2018
FBW systems were designed to replace the need for the manual flight control system, an innovation first introduced by Airbus. FBW allows pilots to input commands through electrical signals, which adds precision and safety to aircraft operation. The overall flight system monitors pilot commands to help guarantee that an aircraft remains within the flight protection envelop (North 2000). The FBW system also provides for maximum performance within safety margins for the aircraft (Airbus.com 2015). The movements of flight controls are converted to electronic signals transmitted by wires, which is why they are called fly-by-wire systems. Flight control computers determine how to move the actuators at each control surface to provide an ordered response in an aircraft. The FBW system also allows automatic signals sent by the aircraft’s computers to perform functions without the pilot’s input, including systems that automatically help stabilize the aircraft and that can help prevent unsafe operation of the aircraft outside of its performance envelope (Crane 1997: 224).
Fault-tolerant design and evaluation for a railway bogie active steering system
Published in Vehicle System Dynamics, 2022
HSA is a ‘conventional’ hydraulic actuator developed to achieve the concept of ‘Fly-by-Wire’. In HSA, a centralised pump provides a constant pressure of hydraulic oil and then a servo-valve controls the direction and flow rate of the oil so that the reference motion of the cylinder is realised. Power is supplied to the system through the pump continuously, regardless of the reference assigned to the cylinder, and is transferred via pressurised hydraulic oil through a pipeline to the cylinder. HSA is presently the most commonly used technology in aircraft because of its high power density, technological maturity and fail-safe capability as it enables the isolation of a failed hydraulic actuator that can be set in a standby mode through the operation of the standby valve.
Flying by Feeling: Communicating Flight Envelope Protection through Haptic Feedback
Published in International Journal of Human–Computer Interaction, 2021
Dirk Van Baelen, M. M. (René) van Paassen, Joost Ellerbroek, David A. Abbink, Max Mulder
Modern aircraft can be supplemented with a flight envelope protection system: automation which reduces pilot control inputs to ensure that the aircraft remains within the allowable limits. With the introduction of fly-by-wire, the physical connection between the pilot and the control surfaces was lost, and the effects of the flight envelope protection system was not directly felt anymore by the pilot. Nowadays, active control devices allow the use of haptic feedback, i.e., through the sense of touch, to be re-introduced on the flight deck.