UNIVERSITY OF CALIFORNIA, SANTA CRUZ
This task supports the development and testing of new aircraft performance models for the Center-TRACON Automation System (CTAS) suite of tools. CTAS is software developed by NASA Ames that is used to simulate and test advanced air traffic management concepts. The CTAS architecture currently relies on aircraft performance models that are maintained in the tool. Aircraft performance models express the possible speed envelope of a given type of aircraft and also include technical information about an aircraft like engine thrust and drag model data.
The models currently used in CTAS were developed in-house at NASA, some which are based on aircraft manufacturer data while others were assembled from published data. The rest are modeled using data from similar aircraft. Likewise the engine thrust and drag model data in CTAS have some high fidelity data provided by the engine manufacturers but this comprises a fairly limited set. In total, CTAS currently has aircraft data for 30 uniquely specified models out of 389 FAA recognized aircraft type designations.
The Base of Aircraft Data (BADA) is an aircraft performance model developed and maintained by EUROCONTROL and is available to organizations engaging in air traffic management research. The BADA model contains aircraft type, mass, flight envelope, aerodynamics, engine thrust and fuel consumption. In addition, the Airline Procedure Model defines the speeds that are to be used during the climb, cruise and descent flight phases. BADA contains over one hundred directly supported models.
NASA has a license agreement with EUROCONTROL to use BADA. The goal of this task is to assess and analyze the benefits of incorporating elements of the available BADA models into the CTAS tool. The contractor shall support the government in this goal by developing and testing a prototype with incorporates the BADA models. With government approval, the contractor shall incorporate approved changes resulting from this prototype into the existing CTAS baseline.
This task requires the design and implementation of an interface to the BADA aircraft performance model database within the CTAS Trajectory Synthesizer (TS). The interface would consist not only of the actual data but also the equations of motion.
The software shall be validated to ensure the correct data is being extracted from the database. The resultant trajectories shall be compared to those generated by the current aircraft performance model. Both sets shall be compared to the track recordings of actual flown trajectories (provided by the government). Where the experimental analysis recommends improvement in trajectory calculation performance, these improved capabilities shall be incorporated into the CTAS software baseline.
The contractor is required to provide two builds of CTAS software. The first build (BADA prototype) shall be used to conduct the laboratory experiment comparing the accuracy of trajectories generated by the in-house and BADA model databases. The second build is required to incorporate approved BADA models into the CTAS baseline.
The primary elements of this task are:
- BADA Integration work plan
- BADA Prototype Development
- Laboratory Analysis Results
- CTAS Software Development
The contractor shall work closely with NASA researchers to understand detailed task requirements. The contractor shall work closely with other NASA contractors in carrying out all the primary task elements listed above.
In completing this task, the contractor shall attend NASA (or NASA-directed) meetings. These may be local, via telephone, via web or video-conference, or held at off-site locations. Travel may be required.