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Method for implementing required navigational performance procedures

A technique for required navigation performance, performance, application-specific simulation processes, computers for various vehicles, aircraft traffic control, etc.

Inactive Publication Date: 2010-03-24
NAVERUS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The basic question answered by conventional procedures is: "given the characteristics required for basic navigation, what is the best method of entry?", while the basic question of RNP procedures is: "perform the safest and most efficient way to enter the runway." What level of performance do you need for your flight path?"

Method used

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  • Method for implementing required navigational performance procedures
  • Method for implementing required navigational performance procedures
  • Method for implementing required navigational performance procedures

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Embodiment Construction

[0019] Modern commercial aircraft typically include very accurate on-board global positioning systems. For example, a Boeing 737NG equipped with a Smithsonian management system constantly calculates the uncertainty of the aircraft's in-flight orientation. The system is constantly updated via the Global Positioning System ("GPS") to ensure continuity and maintain positional accuracy. A multimode receiver processes the data and displays the aircraft's actual navigation performance ("ANP") to the flight crew in real time. Consequently, the narrow passages through which the above-mentioned aircraft traverse have bearing uncertainties that are much smaller than those obtained using conventional terrestrial radiolocation systems. During an approach, ANP can be compared to a predefined standard known as Required Navigation Performance ("RNP") to provide greatly improved guidance and protection directly to the runway.

[0020] ANP is a function of accuracy, availability and complete...

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Abstract

A method (200) is disclosed for designing an RNP approach for an aircraft at a particular runway (90). The method includes selecting a runway (201), gathering obstacle data for the obstacle evaluationarea (202), selecting a VEB method and terms (204), laying out a preliminary approach, inducing a missed approach segment (206), calculating a preliminary obstacle clearance surface (208), calculating a momentary descent segment using a physical model of the aircraft (210), adjusting the obstacle clearance surface so that no obstacles intersect the surface (212), and optionally optimizing the approach by departing from the operator's standard procedures (214). Preferably, the obstacle clearance surface is adjusted so that it just touches an obstacle, without any object intersecting the surface, thereby providing an optimal decision altitude.

Description

[0001] Cross reference to related applications [0002] This application claims the benefit of U.S. Invention Patent Application No. 60 / 662,133, filed March 10, 2005, the entire disclosure of which is hereby expressly incorporated by reference, and also claims the disclosures contained herein under 35 U.S.C. Priority of the requested filing date. technical field [0003] The present invention relates to aircraft flight path design and, more particularly, to final approach procedure design. Background technique [0004] In the field of commercial aviation, the ability to accurately locate an aircraft's bearing is important to safe and efficient air travel. Initially, pilots relied on visual cues to avoid obstacles during takeoff and approach landing. However, weather conditions often hinder the pilot's ability to see such objects. Accordingly, navigation procedures were developed to guide aircraft into or out of terminal areas requiring only positional information and no v...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F19/00G06G7/70
CPCG08G5/0086G08G5/025
Inventor 丹尼尔·A·格里蒂杰森·E·多尔蒂约翰·H·安德森斯戴芬·D·福尔顿
Owner NAVERUS
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