This poster describes research conducted using the Stochastic Terminal Area Simulation Software to determine spacing buffers for the Terminal Area Precision Scheduling and Spacing human-in-the-loop simulation

Mulfinger, Daniel

NASA Technical Reports Server

National Aeronautics and Space Administration
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FAST-TIME ANALYSIS SUPPORT FOR THE TERMINAL AREA 
PRECISION SCHEDULING AND SPACING (TAPSS) SIMULATION
STASS System
Jobs
Database
Results
Database
Parameter 
Loader 
Program
Visualization 
Software
Parallelized STASS 
runs on multiple 
networked 
computers
Solution
The Stochastic Terminal Area Scheduling 
Simulation System (STASS) provides a platform 
for fast-time simulation of advanced scheduling 
concepts. STASS models aircraft arrival system 
performance in the extended terminal area using a 
two-point scheduling approach. Design sweeps 
using Monte Carlo techniques explore the effects 
of varying technology performance (arrival 
uncertainty) at meter fix and runway locations 
across the extensive parameter space for optimal 
designs.
Problem
Evaluating advanced scheduling concepts for 
NextGen involves understanding of a wide range of 
tradeoffs across an extensive parameter space.  
These parameters include scheduling buffer, arrival 
precision, and maximal allowed delays. Since 
actual concept development and associated 
human-in-the-loop (HITL) testing are costly, tools 
are needed to narrow down the specific parameter 
space to the most promising designs and 
evaluations.
Key Parameters
• Meter fix uncertainty
• Runway uncertainty
• Meter fix buffer
• Runway buffer
• Maximum TRACON 
delay
• Time advance margin
System performance 
and technology 
expectations for various 
buffering, workload, and 
precision scenarios
Acceptable levels of 
controller workload 
under TAPSS conditions
Large-scale evaluation 
over wide parameter 
value range
Expected performance 
gains from reduced 
arrival uncertainty by 
airborne technology and 
varying avionics upgrade 
levels
Key relationships 
between buffer, 
uncertainty, and 
controller workload
Theoretical Trade 
Space Analysis
Air/Ground-Based 
HITL (Future)
Additional concepts: interval 
management, avionics upgrades
Ground-Based 
HITL (TAPSS)
Concepts: advanced TMA, EDA 
and CMS
Key Metrics
• Average throughput
• TRACON delay
• Center delay
• Controller workload
• Time advance 
savings
https://ntrs.nasa.gov/search.jsp?R=20110023693 2019-08-30T18:21:53+00:00Z


Fast-Time Analysis Support for the Terminal Area Precision Scheduling and Spacing (TAPSS) Simulation

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