NASA Prepares for Advanced Air Mobility Technologies
The NASA Air Traffic Management
Exploration, or ATM-X, team is providing the virtual environment for
third-party airspace service providers to rehearse their technology
capabilities and ensure future Advanced Air Mobility vehicles or electric-powered
vertical takeoff and landing vehicles can safely integrate with existing and
future air traffic.
The goal of the ATM-X project is to
accelerate the development of software that is robust and integrated enough to
increase automation and avoid adding additional challenges for national
airspace traffic controllers.
NASA’s vision for the Advanced Air
Mobility National Campaign is to help create safe,
sustainable, accessible, and affordable aviation for a number of uses at local
and regional levels. NASA and the Federal Aviation Administration intend to
collaborate throughout all stages of the National Campaign, from planning and
scenario validation, to flight demonstrations and simulation activities.
“The space where these aircraft will
operate is sandwiched between low-flying drones and the traditional airspace
high above,” said Savvy Verma, lead for airspace procedures and design for the
Urban Air Mobility subproject in ATM-X at NASA’s Ames Research Center in
California’s Silicon Valley. “Aircraft flying in these layers will interact,
and that’s where things get tricky.”
By leveraging NASA’s innovative Unmanned Aircraft
Systems Traffic Management, or UTM, system and partnering with a group
of airspace service providers and the FAA, the team has
been collaboratively developing, testing, and evaluating this
burgeoning flight environment to ensure they are ready for flight tests, which
recently began. By integrating third-party airspace service providers’ technologies and
virtually testing them in a simulation prior to deploying the system in the
field, engineers are able to evaluate how well providers can communicate
with each other and adapt to different flight scenarios in simulated
environments with interactive data visualizations, including other simulated
aircraft.
The Show Must Go On
Even though the team, like many workers
across the globe, switched to remote work in response to the global pandemic in
2020, they were able to continue tests as-planned in a virtual setting.
Typically, the team would use the Air Traffic Control Simulation Laboratory at
Ames, but the team adapted the tests and were able to connect virtually and
remotely run operations.
NASA assessed the prototype air traffic
management software during the third of four engineering evaluations of the
ATM-X project. The simulated scenario testing series began in August and
wrapped up in December 2020. The activity – dubbed X3 – tested
the UAM airspace system under three scenarios. The first explored
simulated flights that followed a simple, predetermined route: from
takeoff to a “vertipad” landing site to test whether providers could stick to
the plan, what’s known as route conformance. The second scenario involved
providers re-routing a flight due to a temporary restriction along the flight
path – in this case, a situation like a ground fire that aircraft needed to
avoid flying over. The last scenario had providers divert flights to
alternative landing sites or perform go-arounds. Participating companies could
fly several routes simultaneously and simulate a range of flight speeds, while
ensuring timely communications and safe operations.
“A key characteristic of
this system is cooperatively working with many airspace industry partners
to evaluate their current capabilities and focus on the mechanisms for how taxi
operators will communicate with each other and the FAA,” said Spencer Monheim,
lead for airspace integration, testing, and development for the Urban Air
Mobility subproject in ATM-X at Ames. “While using the NASA-developed
UTM, we’re really seeking community feedback for the software infrastructure
that will support these kinds of operations.”
In parallel to the X3 simulation
activities, NASA began conducting a series of flight tests in December called
the National Campaign Dry Run. This series uses a helicopter as a
representative vehicle to develop an analytical baseline for comparison with
future industry vehicle flight testing. In addition, these flight tests are key
to evaluating flight test infrastructure, which consists of range safety,
vehicle instrumentation, airspace integration, weather sensors and data
collection, dissemination, storage, and analysis capabilities.
X4: The Sequel
X3 is a foundational step in
establishing the technology, infrastructure, and information needed for X4
– the next lab evaluation activity for the ATM-X team and its
partners – before the first National Campaign test, NC-1. X4 will advance
the technology and test new information sharing requirements – amongst
providers, as well as between providers and air traffic controllers – to enable
safe, efficient urban air mobility operations while staying aware of increasing
demands on the airspace. The team will support the National Campaign
Developmental Test in 2021, and NC-1 in 2022. For NC-1, industry partners will
focus on demonstrating integrated operations through flight activities with
vehicles and third-party airspace service providers at various locations in the
National Airspace System around the country.
Over the next decade, NASA will work to
determine how cities, airports, and overall infrastructure can support this
type of passenger transport and cargo delivery. The data and lessons learned
from the National Campaign will help inform FAA policies and procedures that
industry will follow as they fly various-size vehicles and diverse missions. In
addition, demonstrations will enable communities and local governments to
further understand operations and assess the noise footprint of these new
vehicles.
This project includes members from four
NASA aeronautics centers, including Armstrong Flight Research Center in
Edwards, California; Ames Research Center in California’s Silicon Valley;
Langley Research Center in Hampton, Virginia; as well as Glenn Research Center
in Cleveland, with leadership by NASA’s Aeronautics Research Mission
Directorate.
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