Conflict-resolution algorithms for RPAS in non-segregated airspace

Pérez–Castán, Javier A.; Comendador, Fernando Gómez; Rodríguez–Sanz, Álvaro; Valdés, Rosa María Arnaldo; Torrecilla, Jaime

doi:10.1108/aeat-01-2018-0024

Cited by 19 publications

(12 citation statements)

References 4 publications

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“…However, RPAS operational performances are lower than conventional aircraft. Previous studies (Clothier et al, 2015a(Clothier et al, , 2015bEUROCONTROL, 2015;Pérez-Castán et al, 2017) showed that RQ4A-Global Hawk and MQ9-Reaper are the most suitable RPAS to operate jointly with conventional aircraft.…”

Section: Conflict-risk Factorsmentioning

confidence: 99%

RPAS conflict-risk assessment in non-segregated airspace

et al. 2019

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The efficient and safe introduction of Remotely Piloted Aircraft System (RPAS) in non-segregated airspace requires a thorough assessment of all operational elements. In this paper, we dealt with the safety problem that arises from the integration of RPAS jointly with conventional aircraft in non-segregated airspace. The authors propose a framework and methodology for airspace design and planning purposes based on a conflict-risk method. This method compares a target level of safety (base-scenario without RPAS) with the calculated level of safety (scenario with RPAS). Moreover, the framework proposes an in-depth assessment by identifying geometrical and operational factors that may affect conflict risk. These conflict-risk factors are critical for RPAS integration and must be assessed to detect relations between them and conflict risk. Moreover, we have performed a sensitivity analysis to assess how RPAS average speed affects conflict risk. A real air traffic volume is studied to characterise a conflict-risk indicator, and different permutations to the base-scenario study the RPAS integration all over airways. Results confirm the validity of the methodology for planning purposes and the viability of RPAS integration without a significant impact on safety but with several restrictions to the RPAS airway distribution.

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Section: Conflict-risk Factorsmentioning

confidence: 99%

RPAS conflict-risk assessment in non-segregated airspace

et al. 2019

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“…Then, RPAS must adapt to the current airway network and current air traffic patterns. One of the main concerns is that RPAS operational patterns can differ from conventional aircraft ones [8,9]. Although RPAS could be assumed to be modelled as slow conventional aircraft, there are uncertainties about communications, navigation and surveillance issues that must be analysed in advance [10].…”

Section: Introductionmentioning

confidence: 99%

Risk-Based Framework for the Integration of RPAS in Non-Segregated Airspace

Pérez–Castán¹,

Rodríguez–Sanz²

2020

Risk Assessment in Air Traffic Management

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Remotely Piloted Aircraft Systems (RPAS) are new airspace users that require to be safely integrated into the non-segregated airspace. Currently, their integration is planned for the horizon 2025, but there is a lot of pressure by RPAS operators to fly as soon as possible. This research focuses on the development of a risk-based framework for the integration of RPAS in non-segregated airspace. The risk-based framework relies on a hierarchical methodology that is split into two time horizons: design and operation. Different operational and geometrical factors characterise each stage. Then, a set of risk and operational indicators are defined for each stage. These indicators evaluate the operational airspace state and provide information about how the integration of RPAS should be. Primary results provide information about geographical and temporary restrictions. Geographical restrictions refer to the airways that favour or inhibit the integration of RPAS, and temporary restrictions denote the time span when the RPAS can pierce into the airspace.

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“…Then, RPAS must adapt to the current airway network and current air traffic patterns. One of the main concerns is that the operational patterns of RPAS can differ from conventional aircraft ones [9,10]. Although RPAS could be assumed to be modelled as slow conventional aircraft, there are uncertainties about communications, navigation and surveillance issues that must be analysed in advance [11].…”

Section: Introductionmentioning

confidence: 99%

How many RPAS can be safely integrated in non–segregated airspace?

et al. 2019

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The forthcoming integration of Remotely Piloted Aircraft System (RPAS) is one of the cmost omplex challenges for aviation. Europe draws to allow operating RPAS and conventional aircraft in non-segregated airspace by 2025, but this demanding perspective entails a thorough analysis of the different aspects involved. The RPAS integration in non-segregated airspace cannot imply an increase in the safety levels. This paper assesses how the RPAS integration affects safety levels. The goal is to regulate the number of RPAS that can jointly operate with conventional aircraft regarding conflict risk. This approach benchmarks a Calculated Level of Safety (CLS) with a Target Level of Safety (TLS). Monte Carlo (MC) simulations quantify the TLS based on schedules of conventional aircraft. Then, different combinations of conventional aircraft and RPAS provide different CLS. MC simulations are performed based on probabilistic distributions of aircraft performances, entry times and geographical distribution of aircraft. The safety levels are based on a conflict-risk model because the primary metrics are average number of conflicts and average conflict duration. The methodology is applied to one flight level of en-route airspace. The results provide restrictions to the number of RPAS that can jointly operate with conventional aircraft. Particularly, the TLS is quantified for four conventional aircraft and MC simulations provide the combinations of conventional aircraft and RPAS that fulfil the CLS. The same number of RPAS than conventional aircraft shows an increase over 90% average number of conflicts and 300% average conflict time.

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Conflict-resolution algorithms for RPAS in non-segregated airspace

Cited by 19 publications

References 4 publications

RPAS conflict-risk assessment in non-segregated airspace

RPAS conflict-risk assessment in non-segregated airspace

Risk-Based Framework for the Integration of RPAS in Non-Segregated Airspace

How many RPAS can be safely integrated in non–segregated airspace?

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