Flight Management System for Unmanned Reusable Space Vehicle Atmospheric and Re-Entry Trajectory Optimisation

Ramasamy, Subramanian; Sangam, Manoj; Sabatini, Roberto; Gardi, Alessandro

doi:10.4028/www.scientific.net/amm.629.304

Cited by 3 publications

(2 citation statements)

References 11 publications

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“…The virtual integration of ABIA into an existing SAA architecture for cooperative and noncooperative scenarios showed that all mid-air collision threats were successfully avoided by implementing suitable trajectory optimisation algorithms. Further research is currently focusing on the following main areas [21][22][23]:  Study possible applications of the ABIA/SAA concepts to advanced mission planning and forensic applications.…”

Section: Discussionmentioning

confidence: 99%

Investigation of GNSS Integrity Augmentation Synergies with Unmanned Aircraft Sense-and-Avoid Systems

Sabatini¹,

Moore²,

Hill³

et al. 2015

SAE Technical Paper Series

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Global Navigation Satellite Systems (GNSS) can support the development of low-cost and high performance navigation and guidance architectures for Unmanned Aircraft Systems (UAS) and, in conjunction with suitable data link technologies, the provision of Automated Dependent Surveillance (ADS) functionalities for cooperative Sense-and-Avoid (SAA). In non-cooperative SAA, the adoption of GNSS can also provide the key positioning and, in some cases, attitude data (using multiple antennas) required for automated collision avoidance. A key limitation of GNSS for both cooperative (ADS) and non-cooperative applications is represented by the achievable levels of integrity. Therefore, an Avionics Based Integrity Augmentation (ABIA) solution is proposed to support the development of an Integrity-Augmented SAA (IAS) architecture suitable for both cooperative and non-cooperative scenarios. The performances of this IAS architecture were investigated in representative simulation case studies by testing the ability of the SAA system to exploit the predictive (caution) and reactive (warning) integrity flags generated by ABIA. Additionally, the ABIA False Alarm Rate (FAR) and Detection Probability (DP) performances were examined and an initial evaluation of the complementarity with Space-Based and Ground-Based Augmentation Systems (SBAS/GBAS) was accomplished. Simulation results show that the proposed IAS architecture is capable of performing high-integrity conflict detection and resolution when GNSS is used as the primary source of navigation data and there is a clear synergy with state-ofthe art SBAS/GBAS in all applicable flight phases.

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Section: Discussionmentioning

confidence: 99%

Investigation of GNSS Integrity Augmentation Synergies with Unmanned Aircraft Sense-and-Avoid Systems

Sabatini¹,

Moore²,

Hill³

et al. 2015

SAE Technical Paper Series

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“…The automated systems allow the aircraft to fly user-preferred optimal flight paths and thus they limit the intervention of the air traffic controllers to high-level and emergency decision making. The novel airborne and ground ATM systems will provide better and precise airborne navigation services, optimal collision avoidance and aircraft separation assistance, and effective, secure and reliable communication links [5][6][7][8][9][10]. The traditional databases associated with FMS are magnetic deviation (MAG DEV), performance database (PERBDB) and navigation database (NAGDB).…”

Section: Introductionmentioning

confidence: 99%

Novel flight management system for improved safety and sustainability in the CNS+A context

Ramasamy

Sabatini

Gardi

2015

2015 Integrated Communication, Navigation and Surveillance Conference (ICNS)

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Avionic system developers are faced with the challenge of researching and introducing innovative technologies that satisfy the requirements arising from the rapid expansion of global air transport while addressing the growing concerns for environmental sustainability of the aviation sector. As a consequence, novel systems are being developed in the Communication, Navigation and Surveillance/Air Traffic Management (CNS/ATM) and Avionics (CNS+A) context. The introduction of dedicated software modules in Next Generation Flight Management Systems (NG-FMS), which are the primary providers of automated navigation and guidance services in manned aircraft and RemotelyPiloted Aircraft Systems (RPAS), has the potential to enable the significant advances brought in by time based operations. In this paper, key elements of the NG-FMS architecture are presented that allow the incorporation of 4-Dimensional Trajectory (4DT) planning and optimisation with inclusion of CNS integrity monitoring and augmentation functions in the overall design. The NG-FMS is designed to be fully interoperable with a future ground based 4DT Planning, Negotiation and Validation (4-PNV) system, enabling automated Trajectory/Intent-Based Operations (TBO/IBO). The mathematical models for 4DT planning are presented and the CNS integrity performance criteria are identified for various mission-and safety-critical tasks. Evaluation of the proposed concepts and methodologies is performed through dedicated simulation test case. The results demonstrate the functional capability of the NG-FMS to generate cost-effective trajectory profiles satisfying operational as well as environmental constraints.

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High-Fidelity Dynamics Modelling for the Design of a High-Altitude Supersonic Sounding Rocket

Milne

Samson

Carrese

et al. 2023

Designs

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The accurate modelling and simulation of vehicle dynamics is a fundamental prerequisite for the design and experimental flight testing of aerospace vehicles. In the case of high-altitude supersonic sounding rockets, it is critically important to produce realistic trajectory predictions in a representative range of operational and environmental conditions as well as to produce reliable probability distributions of terminal locations. This article proposes a methodology to develop high-fidelity flight dynamics models that accurately capture aeroelastic, turbulence, atmospheric and other effects relevant to sounding rockets. The significance of establishing a high-fidelity model and of addressing such a problem in the context of developing a digital twin are sed upfront, together with the key tools utilised in the analysis. In addition to state-of-the-art computational methods to determine the aerodynamic forces, moments and mass changes in various flight regimes (including parachute release), a detailed methodology for incorporating the dynamic aeroelastic response of the rocket is presented. The validity of the proposed method is demonstrated through a simulation case study, which utilises data from an existing rocket prototype. Results corroborate the correct implementation of the proposed algorithms and provide foundations for future research on virtual sensing and digital twin for autonomous navigation and guidance.

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Flight Management System for Unmanned Reusable Space Vehicle Atmospheric and Re-Entry Trajectory Optimisation

Cited by 3 publications

References 11 publications

Investigation of GNSS Integrity Augmentation Synergies with Unmanned Aircraft Sense-and-Avoid Systems

Investigation of GNSS Integrity Augmentation Synergies with Unmanned Aircraft Sense-and-Avoid Systems

Novel flight management system for improved safety and sustainability in the CNS+A context

High-Fidelity Dynamics Modelling for the Design of a High-Altitude Supersonic Sounding Rocket

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Flight Management System for Unmanned Reusable Space Vehicle Atmospheric and Re-Entry Trajectory Optimisation

Cited by 3 publications

References 11 publications

Investigation of GNSS Integrity Augmentation Synergies with Unmanned Aircraft Sense-and-Avoid Systems

Investigation of GNSS Integrity Augmentation Synergies with Unmanned Aircraft Sense-and-Avoid Systems

Novel flight management system for improved safety and sustainability in the CNS&#x002B;A context

High-Fidelity Dynamics Modelling for the Design of a High-Altitude Supersonic Sounding Rocket

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Product

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Novel flight management system for improved safety and sustainability in the CNS+A context