Topic
Required navigation performance
About: Required navigation performance is a research topic. Over the lifetime, 343 publications have been published within this topic receiving 3477 citations. The topic is also known as: RNP.
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TL;DR: A typical flight profile is completed by addressing airport surface movement, and proposing the requirements based on operational requirements for each airport category, to support operations in zero visibility conditions.
Abstract: The CNS/ATM concept envisages reliance on global satellite navigation systems to underpin future air traffic management that is able to cope with the ever-increasing demand for air travel without jeopardising safety and the environment. In order to benefit from GNSS, it is crucial that the navigation performance required of air navigation systems is derived and agreed, based on sound principles. Significant work has been undertaken to date and agreement reached on the navigation requirements for the phases of flight up to Category I (CAT-I) precision approach, and proposals are under discussion for CAT-III precision approach. This paper completes a typical flight profile by addressing airport surface movement, and proposing the requirements based on operational requirements for each airport category, to support operations in zero visibility conditions. The benefits of the approach taken in the derivation of the requirements are discussed relative to the existing navigation requirements.
5 citations
11 Oct 2020
TL;DR: The analysis performed demonstrates that the proposed airspace model can efficiently accommodate unmanned aircraft with varying avionics equipment and can be expanded to a full Communication, Navigation and Surveillance (CNS) performance-based approach, allowing a continuous dynamic optimisation of airspace capacity.
Abstract: The emergence of the UAS Traffic Management (UTM) framework has led to the potential to designate new airspace structures and classifications that are suitable for low altitude airspace and particularly in denser urban and suburban areas. This paper presents a novel airspace management approach for Urban Air Mobility (UAM) below the skyline in particular. A robust airspace discretization methodology is developed based on the expected navigation performance. Additionally, a novel methodology is developed to optimally generate airspace sectors from discrete 3D airspace cells. A preliminary verification of the novel airspace structuring methodology is performed based on navigation performance with a reference navigation architecture based on the Global Navigation Satellite System (GNSS). The proposed performance-based discretization methodology promotes operational safety and efficiency and supports enhanced UTM operators' situational awareness under dense traffic conditions. The analysis performed demonstrates that the proposed airspace model can efficiently accommodate unmanned aircraft with varying avionics equipment and can be expanded to a full Communication, Navigation and Surveillance (CNS) performance-based approach, allowing a continuous dynamic optimisation of airspace capacity.
5 citations
22 Jun 2015
TL;DR: Options to leverage Performance-Based Navigation capabilities commonly available on modern transport category aircraft to enable NAS-wide use of curved flight paths and same-altitude turns to independent final approaches for landing on parallel runways are explored.
Abstract: The advent of Required Navigation Performance (RNP) capabilities enabled the development of the Established-on-RNP (EoR) approach concept. Flight validations of the concept are currently being conducted at Denver International Airport (KDEN) to demonstrate the operational viability of independent parallel EoR approaches to widelyspaced runways. The validations complement ongoing studies to determine the acceptability of routine EoR operations from a safety aspect. Broader application of EoR operations and the ability to realize associated benefits throughout the National Airspace System (NAS) largely hinge on aircraft RNP equipage levels and achieved navigational performance to safely support approaches to runways with closer centerline spacing. This paper explores options to leverage Performance-Based Navigation (PBN) capabilities commonly available on modern transport category aircraft to enable NAS-wide use of curved flight paths and same-altitude turns to independent final approaches for landing on parallel runways. Initial findings suggest that leveraging design flexibilities to increase the lateral spacing between turns to angled approach paths may facilitate PBN-based approach applications and enhance operational safety. The paper reviews the separation standards and air traffic control requirements currently applicable to parallel approach operations, presents procedure design concepts that capitalize on PBN-enabled design flexibility, outlines key benefits of associated operational changes, and identifies potential applications.
5 citations
24 Oct 2004
TL;DR: The paper describes operational effects of RNAV and provides insight into these effects and the results of analysis of the flight track data for operations before and several months after RNAV was being used at LAS.
Abstract: The Federal Aviation Administration (FAA) asked The MITRE Corporation to evaluate the effectiveness of implementing terminal area navigation (RNAV) procedures at Las Vegas McCarran International Airport (LAS) New RNAV procedures were implemented in November 2003 and have been in use for arrivals to runways at LAS since that time MITRE's Center for Advanced Aviation System Development (CAASD) collected and examined flight track data from the FAAs terminal approach control facility at LAS for the purpose of this analysis This paper presents the results of analysis of the flight track data for operations before RNAV was in use at LAS (in the year 2000) and several months after RNAV was being used at LAS (in the year 2004) The paper describes operational effects of RNAV and provides insight into these effects
5 citations
04 Dec 2007
TL;DR: In this paper, a mid-term concept of operations in which aircraft are scheduled to arrive at the runway on optimized descent profiles ("CDAs") along area navigation/required navigation performance (RNAV/RNP) routes separated from other RNAV/rNP arrival and departure routings serves as the core concept for discussion.
Abstract: Alleviating air traffic management (ATM) system capacity barriers and environmental impacts around major metropolitan areas is critical for the next generation air transportation system. This paper presents initial research toward applying fast-time simulation methods to evaluate system-level tradeoffs in high-density trajectory-based operations in order to identify suitable roles for humans in the future system. A mid-term concept of operations in which aircraft are scheduled to arrive at the runway on optimized descent profiles ("CDAs") along area navigation/required navigation performance (RNAV/RNP) routes separated from other RNAV/RNP arrival and departure routings serves as the core concept for discussion. The paper discusses tradeoffs between RNAV/RNP route designs, airspace configuration, aircraft and flight management system (FMS) performance, pilot procedures, scheduling automation, and the control methods to be applied. Initial efforts to simulate the core concept have concentrated on developing RNAV/RNP CDAs and departure routes; the paper presents example route designs and discusses tradeoffs arising from them. An important challenge lies in verifying an ATM concept's robustness. This entails demonstrating that a concept provides reasonable means to cope with uncertainties. The paper discusses the application of fast-time simulation methods to an iterative concept development process in which effectiveness in coping with uncertainty is the primary driver for evaluating design tradeoffs and refining the concept.
5 citations