Development, Design and Flight Test Evaluation of Continuous Descent Approach Procedure in FIR Zagreb

Novák, Doris; Bucak, Tino; Radišić, Tomislav

doi:10.7307/ptt.v21i5.247

Cited by 14 publications

(13 citation statements)

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“…From that data, the average reductions in peak noise level resulting from use of the Low Power/Low Drag (LP/LD) and CDA procedures were estimated. This technique has been studied in a number of airports (6)(7)(8)(9)(10)(11) and has produced both fuel and noise reductions.…”

Section: June 2016 the Aeronautical Journalmentioning

confidence: 99%

New method to compute the missed approach fuel consumption and its emissions

Murrieta-Mendoza

Botez

2016

Aeronaut. j.

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The aeronautical industry has set for itself important environmental goals, creating the need of improved tools for measuring the polluting emissions generated by fuel burn. This paper describes a new method to estimate the fuel burn and the pollution generated by a landing approach and also for a missed approach procedure. Fuel emission estimations can be used to compare the costs of different routes. The method developed in this paper uses the Emissions Guide Book developed by the European Environment Agency as the needed database for the computations. This method gives estimations of the fuel burn and emissions, including the amounts of CO, NOx, HC, EICO, EINOx and EIHC for a given flight as its output. The flight computation is divided into two sections: one section for the aircraft's travelled distance and a second section for the time an aircraft flies under certain flight modes. Since this method computes the missed approach fuel and emissions contribution, it computes the burn for a given descent approach for a successful landing, as well as for the same descent approach with a missed approach procedure followed by a successful landing. These two landings are verified in a complete flight to study the missed approach contribution for a conventional mid-range flight. The results show that a descent with the missed approach procedure requires 5.7 times more fuel than a normal, successful descent. This extra fuel burn increases the pollution released to the atmosphere and would impact the airlines’ profit margin due to the added fuel costs and longer flight times, as well as any future economic measures imposed on the increased air and noise pollution.

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Section: June 2016 the Aeronautical Journalmentioning

confidence: 99%

New method to compute the missed approach fuel consumption and its emissions

Murrieta-Mendoza

Botez

2016

Aeronaut. j.

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“…One way of minimizing fuel consumption is via environment-friendly procedures such as Continuous-Descent Approach (CDA) [8][9][10]. It is essential to consider the impacts on the environment.…”

Section: Introductionmentioning

confidence: 99%

Evaluating Fuel Consumption for Continuous Descent Approach Based on QAR Data

Cao

Wang

2019

PROMET

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Fuel savings are a significant aspect for evaluating the current and future technologies of civil aviation. Continuous-Descent Approach (CDA), as a representative of new concepts, requires a method for evaluating its fuel benefits. However, because of unavailability of the practical operational data, it is difficult to validate whether the previous fuel consumption mechanisms are suitable. This paper presents a unique method for quantifying potential fuel benefits. This permits an easy evaluation for the new procedures without modelling before implementing field tests. The proposed method is detailed in this paper. It derives from the inherent mechanical characteristic of aircraft engine, and utilizes historical flight data, rather than modelling, to predict fuel flow rates by matching flight conditions from Quick Access Recorder (QAR) data. The result has been shown to predict fuel consumption for conventional descent with the deviation of ±0.73%. To validate such method, a case study for our designed CDA procedure is presented. Fuel consumptions in baseline scenarios are estimated to analyse the variable impacts on fuel consumption. The estimated fuel benefits are consistent with the results in the previous field tests. This analysis helps support Air Traffic Management decisions on eventual field test by reducing the validation time and cost.

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“…Field trials have provided a great deal of insight into the ability to predict and execute such continuous descents for major-carrier type aircraft such as Boeing and Airbus. [4][5][6][7] Fuel benefits for continuous descents compared to current-days' operations have also been evaluated. 1,4,8 However, little attention has been paid to "small" (regional, business and light) jet types, which comprise a large and potentially high-growth portion of NextGen traffic operations in the United States.…”

Section: Introductionmentioning

confidence: 99%

Strategies for Choosing Descent Flight-Path Angles for Small Jets

Green

2015

Journal of Aircraft

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A standard descent procedure with a fixed flight-path-angle (FPA) is proposed to improve trajectory predictability for arriving small jets in the transition airspace into congested terminal area. Three candidate strategies for selecting fuel-efficient and flyable descent FPAs are proposed. The three strategies vary in operational complexity and fuel-burn merits. To mitigate variation of wind among flights, the two simpler strategies are adapted to airport, directions of arrival, and time. Three major US airports with different degrees of wind variation and disparate arrival traffic flows are analyzed. Results show that, when compared to the simple Airport-Static adaptation, the finest adaptation of the simpler strategies recover up to 50%-75% of the extra fuel burn relative to the minimum-fuel strategy. Wind variation, descent altitude restrictions, arrival directions, and fleet composition all affect the fuel efficiency of the simple strategies. Trade-offs between fuel burn and planned speed brake usage in the choice of the FPA are discussed. Fuel efficiency of simple strategies for the entire national airspace in the United States is estimated. Considerations and implications for air navigation service providers are discussed.

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Development, Design and Flight Test Evaluation of Continuous Descent Approach Procedure in FIR Zagreb

Abstract: As part of Local Conversion and Implementation Plan which is based on the EUROCONTROL Revised Convention the Republic of Croatia has undertaken to make a plan of implementing the Basic Continuous

Cited by 14 publications

References 1 publication

New method to compute the missed approach fuel consumption and its emissions

New method to compute the missed approach fuel consumption and its emissions

Evaluating Fuel Consumption for Continuous Descent Approach Based on QAR Data

Strategies for Choosing Descent Flight-Path Angles for Small Jets

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