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The Simplified Aircraft-Based Paired Approach With the ALAS Alerting AlgorithmThis paper presents the results of an investigation of a proposed concept for closely spaced parallel runways called the Simplified Aircraft-based Paired Approach (SAPA). This procedure depends upon a new alerting algorithm called the Adjacent Landing Alerting System (ALAS). This study used both low fidelity and high fidelity simulations to validate the SAPA procedure and test the performance of the new alerting algorithm. The low fidelity simulation enabled a determination of minimum approach distance for the worst case over millions of scenarios. The high fidelity simulation enabled an accurate determination of timings and minimum approach distance in the presence of realistic trajectories, communication latencies, and total system error for 108 test cases. The SAPA procedure and the ALAS alerting algorithm were applied to the 750-ft parallel spacing (e.g., SFO 28L/28R) approach problem. With the SAPA procedure as defined in this paper, this study concludes that a 750-ft application does not appear to be feasible, but preliminary results for 1000-ft parallel runways look promising.
Document ID
20130009914
Acquisition Source
Langley Research Center
Document Type
Technical Memorandum (TM)
Authors
Perry, Raleigh B.
(NASA Langley Research Center Hampton, VA, United States)
Madden, Michael M.
(NASA Langley Research Center Hampton, VA, United States)
Torres-Pomales, Wilfredo
(NASA Langley Research Center Hampton, VA, United States)
Butler, Ricky W.
(NASA Langley Research Center Hampton, VA, United States)
Date Acquired
August 27, 2013
Publication Date
February 1, 2013
Subject Category
Air Transportation And Safety
Report/Patent Number
NASA/TM-2013-217804
NF1676L-15409
L-20197
Funding Number(s)
WBS: WBS 411931.02.07.01
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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