Community Research and Development Information Service - CORDIS


PJ11 CAPITO Report Summary

Project ID: 732996
Funded under: H2020-EU.3.4.7.

Periodic Reporting for period 1 - PJ11 CAPITO (Enhanced Air and Ground Safety Nets)

Reporting period: 2016-11-01 to 2017-12-31

Summary of the context and overall objectives of the project

The project is concerned with Enhanced Air and Ground Safety Nets. Airborne Collision Avoidance Systems (ACAS) are operational globally and need to be optimised for all airspace and to be compatible with existing systems. The scope of work is extended from that performed within SESAR1 to include Remotely Piloted Aircraft Systems (RPAS), General Aviation (GA), rotorcrafts (R) and military operations. Safety nets are not widely advertised as saving lives, however the social benefit to assure safety cannot be measured as they are in relation to events that do not happen, or very rarely. Preventing collision between aircraft is the main purpose of Air Traffic Control and any failures resulting in accidents will have social impact on travelling public and, consequently, economic impact on the industry. The Risk Ratio (i.e. Measure of mid-air incidents with and without safety nets) is a measure of this, although not in absolute financial terms. In addition, accommodating RPAS integration safely is a prerequisite for the development of the RPAS business.
The main objectives of the project are those defined by the Solutions:
PJ11-G1: Improve the Short Term Conflict Alert (STCA) via system support to the Non Transgression Zone (NTZ) safety NET including the use of downlinked aircraft parameters (DAPs); Develop a minimum STCA and NTZ Operational, Safety and Performance Requirements.
PJ11-A1: check that flight crew confidence in the collision avoidance system (and thus a good manual response to the alerts) is maintained; analyse the interaction of ACAS Xa with specific European aircraft features developed in SESAR 1 (automatic response to Resolution advisories (RAs) and reduction of vertical speed when approaching a cleared flight level), and possibly propose adaptations of these features if an issue is identified; consider the possible introduction of ACAS Xa in Europe and the interaction with future operations.
PJ11-A2: evaluate the performance and benefits of ACAS Xu within European operations/airspace; ensure that the future standard of the ACAS Xu system (MOPS planned currently in 2020) correctly addresses the operational needs of European airspace/operations as well as technical aspects raised by European industry; ensure that the ACAS Xu system is compatible with the European definition of Detect And Avoid system/capability.
PJ11-A3: identify the main use cases for ACAS Xo capability within current and future European operations; evaluate the benefits/suitability of the basic ACAS Xo implementation developed by FAA for these European scenarios; evaluate the opportunity in terms of achievable benefits for a tailored ACAS Xo implementation addressing selected use cases and define the relevant technical and operational requirements.
PJ11-A4: evaluate the operational benefits achievable by SA+ during mixed equipage encounters; analyse reusability of specific elements introduced in ACAS Xu solution for GA/R/military users;

Work performed from the beginning of the project to the end of the period covered by the report and main results achieved so far

PJ11-G1. During this period of time the re-scoping of the solution occurred compared with the description in the last Grant Amendment. The following documents of PJ11-G1 solution have been delivered during this period of time: Contextual note with new scope of solution; Initial OSED with concept solution; Initial VALP: Initial CBA; Initial TS; and Maturity self-assessment for Light Maturity Gate V1.

PJ11-A1 concentrates on improvements to the current Airborne Collision Avoidance System for Commercial Air Traffic – ACAS Xa: During this period it has delivered: An initial validation plan covering the V3 exercises ; Simulations of two stages of the Run 15 version of the ACAS Xa threat resolution module; Indicators (safety, compatibility with ATC, pilots and the SESAR 1 TCAP feature) and areas of improvement were documented; Simulations of the Run 15 version of the ACAS Xa surveillance and tracking module; A software prototype of one stage of the Run 15 version of ACAS Xa (both surveillance and resolution modules) was developed for use in the upcoming real-time simulations assessing flight crew response / feedback to ACAS Xa; Initial CBA activities focusing on identification of relevant stakeholders and benefits mechanisms; in addition, the results for the validation of ACAS Xa Run 15 were provided to the FAA development team and discussed at joint RTCA / EUROCAE meetings.

PJ11-A2 concentrates on the concept of Airborne Collision Avoidance for Remotely Piloted Aircraft Systems. During the reporting period a major part of work necessary to complete ACAS Xu V1 phase was achieved in the PJ.11-A2 solution: Initial ACAS Xu OSED; V1 validation plan describing the validation exercise evaluating Run 3 of ACAS Xu; Validation platform for V1 exercise and its readiness documented in Availability Note; V1 validation; the initial CBA activities focusing on identification of relevant stakeholders and benefits mechanisms were already addressed.

PJ11-A3 concentrates on the concept of ACAS for Commercial Air Transport specific operations. Main A3 solution achievements since the beginning of the project: ACAS (Xa)/Xo SW prototype Run15.2 has been implemented to support PJ.11-A3 V2 evaluation in 2018; Initial OSED for ACAS Xo has been developed, identifying several open points / questions that have been raised to RTCA/EUROCAE; Some gaps have been identified in V1 results which will be addressed in parallel with planned V2 activities; No specific operations identified for existing ACAS Xo modes in the current European environment. However, since European Airlines are also impacted by the US operations, and very likely the potential European parallel approaches will be similar to US parallel approach operations, the validation activities under preparation will apply US scenarios together with possible future European scenarios; Detailed validation planning has been kicked-off, and partner’s contribution has been agreed.

PJ11-A4 concentrates on the concept of Airborne Collision Avoidance for General Aviation and Rotorcraft – ACAS Xp. The main A4 solution achievements of the project are: Delivery of initial OSED for TSAA+; Delivery of VALP describing three different exercises relevant for V1 phase of TSAA+, but also including Safety VALP that captures safety aspects/criterions to be addressed in future validation activities; Representative set of mixed-equipage encounters prepared (and used in V1 validation) from current European environment, involving GA/R/MIL and TCAS-equipped aircraft; Successful preparation (platforms development/integration incl. ANs) of V1 validation, its on-time execution and results analysis; solid progress on GA encounter model to be used for future validations.

Progress beyond the state of the art and expected potential impact (including the socio-economic impact and the wider societal implications of the project so far)

The project will have made innovative contributions to the state of the art in modelling and metrics for the operational and safety evaluation of RPAS in the Air Traffic Management environment. This works is performed in conjunction with Universities and Research Centres both in Europe and the USA.
The early research activities into the collision avoidance variant for General Aviation will address techniques and systems as a first mover in the global collision avoidance community.
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