ATAC SIMMOD Activities

1
ATAC SIMMODActivities

• European SIMMOD
• Users Group
• Rome, Italy
• 7 - 8 October 2004

2
Simmod PLUS! Activities

• Current version is 6.2.3
• Ongoing work for next version of theNetwork
  Builder and Animator
• Substantial under the hood changes
• More detailed worldwide coastline
• Updateable database of fixes, VORs, airports,
  special use airspace in the US
• Can been extended to include worldwide data

3
Simmod PLUS! Activities

• Engine ground logic changes since last meeting
• The runway crossing logic was fixed to eliminate
  situations in departures would hold indefinitely
  if a crossing was placed at an intersection of
  two runways.
• Takeoff logic was fixed to properly apply
  spool-up delay to aircraft that are delayed at a
  procedure start node due to an occupied runway
  (SIMU26 code WR).

4
Simmod PLUS! Activities

• Engine ground logic changes since last meeting
• DSDPATH logic was enhanced with a new field to
  allow the user to specify the maximum amount of
  time that an aircraft is willing to wait to enter
  a DSDPATH before it begins enforcing strict
  first-in-first-out queuing.
• The input routines of the AFLINKBLOCKING data
  have been enhanced to eliminate the temporary
  usage of huge amounts of memory that may exhaust
  the available memory of the computer.

5
Simmod PLUS! Activities

• Engine ground logic changes since last meeting
• A GATERWY logic flaw in which it functioned
  correctly for only the first airport defined in
  the AIRPORTS inputs has been eliminated.

6
Simmod PLUS! Activities

• Engine airspace logic changes since last meeting
• A flaw in which the airlink/departure blocking
  logic would cause the engine to crash in models
  that contain no departure queues.
• Indicated and true airspeeds input values between
  0 and 10 knots are now permitted. The engine
  previously assumed that the user erroneously
  intended Mach number and would automatically
  recalculate the speed.

7
Simmod PLUS! Activities

• Engine airspace logic changes since last meeting
• The airlink/airlink blocking logic has been
  enhanced to allow a blocking airlink to be
  entered more than once in the LINKBLOCKING inputs.

8
Simmod PLUS! Activities

• Engine input/output changes since last meeting
• SIMU10 output has been corrected to include queue
  delays in the departure delay totals.
• SIMU04 now allows scenarios with names longer
  than 19 characters.
• An erroneous message in SIMU04 stating in some
  situations that the procedure blocking distance
  exceeds the total length of the final arrival
  links has been eliminated.

9
Simmod PLUS! Activities

• Ongoing work for next version of the engine
• Departure queue enhancements
• Inputs for the maximum number times or the
  maximum total time that an aircraft can be passed
  in the queue.
• Number of global data values changed to a value
  unique to each departure queue
• Runway crossing enhancements
• Allow greater amount of rechecking for situations
  in which a crosser will not delay departures.
• Extend a landing aircrafts ability to block
  runway crossers by more than the final airlink.

10
ATAC SIMMOD User Base
135 users (including 53 Simmod PLUS! customers)
have obtained the ATAC SIMMOD engine since the
release of version 2.5 in October 2001 (end of US
government funding). These users are from the
following 30 countries
Argentina Australia Bosnia and Herzegovina Brazil
Canada Chile China Denmark
Estonia France Germany Greece India Indonesia Ital
y Japan
Kazakhstan Malaysia Poland Russia South
Africa South Korea Spain Sweden
Taiwan Thailand Turkey UK USA Vietnam