Causal Analysis of Vertical Flight Inefficiency During Descents
- João Basílio Tarelho Szenczuk
- Mayara Condé Rocha Murça
- Rogéria de Arantes Gomes Eller
- Wallace Silva Sant’ Anna Souza
Instituto Tecnológico de Aeronáutica – ITA
- Evento
- XVIII SITRAER – Brasília, DF, Brasil, 22 a 24 de outubro de 2019
- Volume
- Tecnologia Avançada de Transporte Aéreo no Brasil: trabalhos apresentados ao XVIII SITRAER · ISBN 978-65-00-03772-2
- Páginas
- 95–102
- Editora
- Universidade de Brasília (UnB)
- Editores
- Li Weigang, Victor Rafael Rezende Celestino, Leonardo L. B. V. Cruciol
Abstract
Continuous Descent Operations (CDOs) have proven to deliver significant economic and environmental benefits. Yet, flight trajectories are often observed to deviate from optimal procedures during actual operations. Better assessing and understanding the level of trajectory adherence to reference ideal procedures is a key step towards improving system performance. To this end, this paper presents a statistical model of flight trajectory performance and investigates causal factors of vertical inefficiency during descents. Based on historical flight tracking data, the structure and the use of the airspace is learned, and vertical inefficiency is quantified in terms of the amount of level flight during descent. A regression model is then created to map structural and operational factors into vertical performance. Our case study consists of 19,059 arrival flights for the two major airports in the Sao Paulo metroplex, Congonhas (CGH) and Guarulhos (GRU). Results indicate that the airspace structure is the most important causal factor, but adverse weather conditions and traffic flow management restrictions can significantly increase vertical inefficiency.
Keywords: Continuous Descent Operations (CDO); Continuous Descent Approach (CDA); Vertical Inefficiency