Assessment of the feasible CTA windows for efficient spacing with energy-neutral CDO
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Inclou dades d'ús des de 2022
Cita com:
hdl:2117/100328
Tipus de documentText en actes de congrés
Data publicació2016
Condicions d'accésAccés obert
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Reconeixement-NoComercial-SenseObraDerivada 3.0 Espanya
Abstract
Continuous descent operations (CDO) with con-
trolled times of arrival (CTA) at one or several metering fixes
could enable environmentally friendly procedures at the same
time that terminal airspace capacity is not compromised. This
paper focuses on CTA updates once the descent has been already
initiated, assessing the feasible CTA window (and associated fuel
consumption) of CDO requiring neither thrust nor speed-brake
usage along the whole descent (i.e. energy modulation through
elevator control is used to achieve different times of arrival at
the metering fixes). A multiphase optimal control problem is
formulated and solved by means of numerical methods. The
minimum and maximum times of arrival at the initial approach
fix (IAF) and final approach point (FAP) of an hypothetical
scenario are computed for an Airbus A320 descent and starting
from a wide range of initial conditions. Results show CTA
windows up to 4 minutes at the IAF and 70 seconds at the FAP.
It has been also found that the feasible CTA window is affected
by many factors, such as a previous CTA or the position of
the top of descent. Moreover, minimum fuel trajectories almost
correspond to those trajectories that minimise the time of arrival
at the metering fix for the given initial condition
CitacióDalmau, R., Prats, X. Assessment of the feasible CTA windows for efficient spacing with energy-neutral CDO. A: International Conference on Research in Air Transportation. "Proceedings of the 7th International Conference on Research in Air Transportation". Philadelphia: 2016.
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dalmau_16_fuel.pdf | 4,436Mb | Visualitza/Obre |