The Simplified Aircraft-Based Paired Approach with the ALAS Alerting Algorithm

This 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.

Record URL:
Corporate Authors:
National Aeronautics and Space Administration

Langley Research Center
Hampton, VA United States 23681
Authors:
- Perry, Raleigh B
- Madden, Michael M
- Torres-Pomales, Wilfredo
- Butler, Ricky W
Publication Date: 2013-2

Language

English

Media Info

Media Type: Digital/other
Features: Appendices; Figures; References; Tables;
Pagination: 70p

Subject/Index Terms

TRT Terms: Algorithms; Approach control; Flight paths; Landing aids; Parallel runways; Simulation
Subject Areas: Aviation; Operations and Traffic Management; I73: Traffic Control;

Filing Info

Accession Number: 01485380
Record Type: Publication
Report/Paper Numbers: NASA/TM-2013-217804, L-20197
Files: TRIS
Created Date: Jun 26 2013 9:44AM