WEBVTT

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NASA’s Digital Information Platform is creating a digital information ecosystem

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to exchange services and provide access to airspace information to enable fuel efficient operations.

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This system allows providers to make their services more accessible

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and consumers to access information and services they need to optimize their operations.

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In this video we will focus on the Collaborative Digital Departure Rerouting service,

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which provides airlines with routing options similar to how drivers navigate using cellphone apps.

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Even though you know how to get home,

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the traffic conditions on the roads can change which route is the quickest and most efficient.

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The app will then recommend new routes that are faster and more efficient, even if they are a little longer in distance.

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In the sky, flight plans filed by flight operators may experience delays due to weather or increased demand for the same route.

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Alternate routes may exist that could reduce potential delays for a restricted route, even though they too may be a little longer.

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NASA has developed the Collaborative Digital Departure Rerouting, or CDDR,

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service to identify these routes and evaluate their predicted departure delay savings for airlines.

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Departures enter enroute airspace through exit points located on the boundary of the terminal area.

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Under normal conditions, the capacity of the exit points meets the demand of the traffic while still maintaining safe separation,

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much like multiple lanes on a road for cars.

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However, when demand is above capacity, due to high traffic volume or weather, departures are delayed on the surface of the airport.

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When this happens, passengers will be notified of a delay before they are cleared for take off,

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which could last up to 30 minutes after they have boarded and left the gate.

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CDDR continuously monitors potential departure delays and evaluates alternate routes to minimize potential delay on the ground.

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While the alternate routes are usually longer than the filed route,

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a reroute is often beneficial when considering both delay and fuel savings.

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Once an airline is notified of a delay saving route,

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they can efficiently submit a reroute request digitally to the FAA via the CDDR user interface.

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The air traffic control tower is then notified of the request.

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The Tower specialists can approve the reroute request

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and digitally send the new route to the flight crew so they can make the necessary changes.

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While the benefits are easily seen for a single flight, one aircraft’s delay savings will also help subsequent flights as well.

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As one flight is removed from the queue for another exit point,

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all following flights move up one spot in the queue and delay savings are achieved for more aircraft.

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The delay savings from one airport will also benefit flights at adjacent airports

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within the same terminal area because they are all using the same exit points.

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The benefits of CDDR have been shown in the field with airlines.

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Working alongside the FAA and airlines,

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NASA deployed CDDR from January 1 through September 16 of 2022 in the Dallas/Fort Worth airspace and generated delay,

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fuel, emissions, and cost savings to the airlines.

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This technology is addressing the goals of

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NASA’s Sustainable Flight National Partnership

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today.

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Through the Sustainable Flight National Partnership, NASA is engaging with industry, academia,

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and other agencies to reduce the environmental impact of aviation by improving operations and developing sustainable fuels and new aircraft technologies.

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NASA is working with the FAA to introduce new technology to improve the public flying experience

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while reducing delays and emissions from aviation.