China
Africa
Explore chapters and articles related to this topic
Flight management systems
Published in Mike Tooley, David Wyatt, Aircraft Communications and Navigation Systems, 2017
The flight management system (FMS) combines area navigation and performance management into a single system. The two primary components of the system are the flight management computer (FMC) and control display unit (CDU). Primary aircraft interfaces with the FMC are the inertial reference system and automatic flight control system, including the autothrottle. Flight management systems were introduced at a time of rising operating costs; the contributing factors to these costs include fuel and time. The cost of fuel is self-evident; the cost of time includes aircraft utilisation, e.g. if the aircraft is being leased on a cost per flying hour basis. Reducing aircraft speed will decrease fuel burn, but this leads to a longer flight time and increased ‘cost of time’. Flying faster will reduce the cost of time but increase fuel burn.
Situation Awareness and Operating in Today’s Environment
Published in Harry W. Orlady, Linda M. Orlady, John K. Lauber, Human Factors in Multi-Crew Flight Operations, 2017
Harry W. Orlady, Linda M. Orlady, John K. Lauber
Time is also important in the aircraft’s progress in relation to its flight plan, including its time over planned navigational fixes. If there are time variations from the flight, they should be noted as soon as possible and the reason for the discrepancy identified. This can be a critical element, especially on long flights. Flight time is also important in its conformance with the flight’s schedule times and in relation to the clock hours that the flight is scheduled and in which it operates.
Processing time reduction for UAV optimal altitude and investigating its effect on flight time and energy consumption
Published in Journal of Information and Telecommunication, 2023
Mohammad Rezvan Marani, Seyed Masoud Mirrezaei
In (23) and (24), δ is the profile drag coefficient, Ω is Blade angular velocity, is the rotor radius, k is the incremental correction factor to the induced power, and is the UAV weight. According to Mozaffari et al. (2019), time is a function of UAV energy and distance, sot that: It can be concluded from (25) that increasing flight time can affect energy and power consumption. So, increasing the flight time increases the energy consumption, and decreasing it reduces the energy consumption.
Mathematical optimization in enhancing the sustainability of aircraft trajectory: A review
Published in International Journal of Sustainable Transportation, 2020
Ahmed W.A. Hammad, David Rey, Amani Bu-Qammaz, Hanna Grzybowska, Ali Akbarnezhad
Another important economic function which is commonly modeled in ATO problems is that of flight time (Clarke et al., 2013; Fernandes de Oliveira and Büskens, 2011; Prats et al., 2011a). Since flight time is closely aligned with the fuel cost of aircraft, there is a desire to minimize it in order to improve the economic performance of the aircraft.