NASA - National Aeronautics and Space Administration
Follow this link to skip to the main content
+ Visit
+ Contact NASA

+ Home
Aviation Systems
Search Aviation Systems

Division Highlights

Development of a Part-Task Flight Simulator for the USAF/NASA Operational Based Vision Assessment (OBVA) Project: The OBVA Integrated Project Team (IPT) convened last month to review the Phase B project plan developed by the Ames Aerospace Simulation Operations Branch (Code AFJ), the Human Systems Integration Division (Code TH) and the Air Force Research Laboratory (AFRL) in Mesa, Arizona. The Phase B effort will take two years and will include the development of a part task simulator with a limited field-of-view high resolution (approx 20/10 acuity) image system that will be used to develop simulation scenarios and experiments that demonstrate the correlation between Air Force Pilot clinical vision tests/standards and operational performance. The scenarios will concentrate on color, contrast and acuity.

The OBVA program evolved from a feasibility study that was conducted, during FY-06, for the Air Force by Ames codes AFJ and TH. The study demonstrated that an eye limiting visual system for a flight simulator could be built using off-the-shelf equipment and be used to research the operational relevance between Air Force Pilot clinical eye exam standards and operational/mission flight performance. The results of the study were presented to General Rodabush; the three star Surgeon General of the Air Force, who authorized funding for development of a small field of view demonstration system. General Rodabush assigned General Casey, a one star General from his staff, to oversee the program. General Casey visited Ames last Fall, met with Center management, reviewed the project plans with the OBVA IPT and approved the development of the limited field of view part-task simulator. Following the successful completion of Phase B, the Air Force will fund the construction of a full-scale flight simulator for vision assessment.

+ Back to Top
Data Collection Completed for Study of Varying Uncertainty on Automated Airspace Concept Algorithm Performance: The data collection for a study on the effects of some basic uncertainties on the performance of the Automated Airspace Concept (AAC) algorithm using ACES was completed during the final week of December, 2008. The study examined a 1x, 2x, and 3x current traffic demand set over 24 hours in Cleveland Center. The two independent variables were horizontal separation radius and a fixed, center-wide time delay added to the start of conflict resolution maneuvers. Each variable had three data points for a given density, for a total of nine data runs per variable. This, in addition to the three baseline runs (with no time delay and the standard 5 nmi horizontal separation), produced a total of 21 data runs, including seven 3x cases. The horizontal separation radius was varied from four to nine nautical miles, and the time delay increased up to 110 seconds. Metrics collected included the overall delays accrued by the system, the average delay per resolution, the average number of resolution attempts, the number of conflicts, and the number of conflicts unresolved by the AAC algorithm. An initial examination of the results seems to indicate that varying the horizontal separation radius has a significant effect on delays and the number of conflicts, both resolved and unresolved. Though this is expected, the scale of the effect seems to be larger than originally anticipated. The results for the data runs in which time delay was added to the resolution maneuvers has not yet been examined in detail. Results and analysis are planned to be submitted to an upcoming conference.

+ Back to Top
FirstGov - Your First Click to the US Government
+ Freedom of Information Act
+ Budgets, Strategic Plans and Accountability Reports
+ The President's Management Agenda
+ NASA Privacy Statement, Disclaimer,
and Accessibility Certification

+ Inspector General Hotline
+ Equal Employment Opportunity Data Posted Pursuant
to the No Fear Act

+ Information-Dissemination Priorities and Inventories
+ NASA Privacy Statement
NASA - National Aeronautics and Space Administration
NASA Official:
Last Updated: November 7, 2018

+ Contact Us
+ About This Site

+ Download Acrobat Reader