NASA National Aeronautics and Space Administration NASA The Advanced Geared Turbofan 30,000lbf – Electrified (AGTF30-e) A Virtual Testbed for Electrified Aircraft Propulsion (EAP) Research and Collaboration By Dr. Pankaj Dhussa

1. The Advanced Geared Turbofan 30,000lbf – Electrified (AGTF30-e)
A Virtual Testbed for Electrified Aircraft Propulsion (EAP) Research and Collaboration
Accomplishment
- AGTF30-e is a realistic model of an advanced, conceptual
Turbofan engine suitable for research and collaboration
in the aerospace industry. It is an open-source solution
available for download on GitHub to U.S. persons.
- The -e version incorporates selectable features that
simplify the development of electrified propulsion
architectures, including:
- Serial, parallel, or turbo-electric
- Electric power insertion/extraction from one, both, or
between spools
- Integration of electrical components
- Configurable gearing solutions
Schematic of the AGTF30. Also applicable
to the AGTF30-e turbofan.
Expected Impacts
- A publicly available model and reference system that
can be used across the community to facilitate a
variety of research in several topic areas (system/
technology impact studies, dynamic studies,
operability and control studies, etc.)
- Facilitates collaboration among members in the
community, including NASA and its partners
- Rapidly demonstrates impact for new aero-
propulsion technologies – several of which are
featured in the “out of the box” model
Partners and/or Participants
- NASA ARMD, Transformative Aeronautics Concepts Program,
Transformational Tools and Technologies
Features
- Update to the prior released Advanced Geared Turbofan 30,000lbf
(AGTF30)
- Primary modes: standalone conventional engine, parallel hybrid
(electrically-augmented turbofan), and partial turboelectric (turbofan
with power extraction for producing thrust elsewhere with electric
propulsors)
- Secondary features: electric power transfer (use of spool-to-spool power
management for reducing idle fuel burn), turbine electrified energy
management (use of an electric power system to alter engine operation
during transients to improve operability and enable improved
performance through design), and in-flight charging
- Creative interface solutions: provides a trivial option and a non-trivial
option for integrating electric machines with a turbofan engine
- The solution enables researchers to consider various EAP features in
combination and with dynamic functionality
- As a virtual testbed, AGTF30-e allows the impact of various technologies
to be implemented and predicted at an early stage. Challenges can be
identified, and solutions tested for the development and integration of
sustainable aviation technologies
Results
- A functional versatile propulsion system model that has demonstrated
verified and expected behavior through simulation studies
Depictions of a parallel hybrid concept (left – Sugar Volt)
and partially turboelectric concept (right – STARC-ABL).
Both architectures can be captured with the AGTF30-e.
Next Steps
- Promote/demonstrate the model through publications
- Model improvements included added fidelity to the electrical power system
- Potential use in NASA Grant effort
Depiction of the 2 shafts of a turbofan
integrated with an electrical power system
used for EAP. This captures the trivial electric
machine and engine integration option.
Depiction of the non-trivial electric machine and
engine integration solution provided with the
AGTF30-e that leverages a planetary gearbox
interface both shafts and various electric machines.
POC: Jonathan Kratz, Glenn Research Center