1–20 von 207 Ergebnissen
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    Considering Turbofan Operability in Hybrid Electric Aircraft Propulsion System Design

    Jeffryes W Chapman | NTRS | 2023
    system, the gas turbine will experience a loss of power generation as altitude increases, however the electric system will not. This difference ...
    Schlagwörter: Gas turbine , Aircraft Propulsion and Power , Electric aircraft propulsion

    Modeling and Simulation of a Parallel Hybrid-Electric Propulsion System - Electrified Powertrain Flight Demonstration (EPFD) Program

    Konstantinos Milios / Christopher Hall / Andrew Burrell et al. | NTRS | 2023
    the propulsion system, providing various means to meet thrust requirements, compared to conventional gas turbine propulsion architectures ...
    Schlagwörter: hybrid electric propulsion , Aircraft Propulsion and Power , electrified aircraft propulsion , parallel hybrid-electric propulsion

    Modeling Turboshaft Engines for the Revolutionary Vertical Lift Technology Project, Expanded

    Jeffryes W. Chapman / J. Michael Vegh / Gerardo Nunez et al. | NTRS | 2023
    for broader systems analysis studies, including optimization within the propulsion model itself. To expand on the previous effort, the ...
    Schlagwörter: Aircraft Propulsion and Power , gas turbine

    Progress in Distributed Electric Propulsion Vehicles and Technologies

    Hyun Dae Kim / Aaron T Perry / Phillip J Ansell | NTRS | 2020
    The continuous, yet incremental performance gains in high-efficiency gas turbine engines over the last eight decades has enabled passengers ...

    Electrical Power System Sizing Within the Numerical Propulsion System Simulation

    Csank, Jeffrey T. / Sadey, David J. / Thomas, George L. et al. | NTRS | 2019
    needed that can model propulsion systems containing both gas turbine and power system components. This work presents the definition of an ...
    Schlagwörter: Aircraft Propulsion And Power

    Pilot Injector Redesign to Reduce N+3 Cycle Emissions for a Gas-Turbine Combustor

    Ajmani, Kumud / Lee, Phil / Chang, Clarence et al. | NTRS | 2019
    Schlagwörter: Aircraft Propulsion And Power

    NASA's Role in Gas Turbine Technology Development: Accelerating Technical Progress via Collaboration Between Academia, Industry, and Government Agencies

    Suder, Kenneth L. | NTRS | 2019
    future turbine engine-based propulsion systems? If so, what is NASA’s unique role to justify NASA’s investment? To address this topic, we will ...

    Multi-Point Design and Optimization of a Turboshaft Engine for a Tiltwing Turboelectric VTOL Air Taxi

    Chapman, Jeffryes W. | NTRS | 2019
    studies where thrust is produced by four propellers driven by electric motors and powered by a single gas turbine engine. The purpose of this ...
    Schlagwörter: Gas Turbine , Aircraft Propulsion And Power

    Multipoint Design and Optimization of a Turboshaft Engine for a Tiltwing Turboelectric Vertical Takeoff Landing Air Taxi

    Chapman, Jeffryes W. | NTRS | 2019
    where thrust is produced by four propellers driven by electric motors and powered by a single gas turbine engine. The purpose of this paper is ...
    Schlagwörter: Aircraft Propulsion And Power , gas turbine

    CFD Predictions of N+3 Cycle Emissions for a Three-Cup Gas-Turbine Combustor

    Ajmani, Kumud / Lee, Phil / Mongia, Hukam et al. | NTRS | 2018
    Schlagwörter: Aircraft Propulsion And Power

    Turbine Electrified Energy Management (TEEM) For Enabling More Efficient Engine Designs

    Culley, Dennis E. / Kratz, Jonathan L. / Thomas, George L. | NTRS | 2018
    these electrical machines to improve the thermal efficiency and performance of the gas turbine engine. Noting this deficit, a novel operability ...
    Schlagwörter: Aircraft Propulsion And Power

    Dynamic Analysis of the hFan, a Parallel Hybrid Electric Turbofan Engine

    Thomas, George L. / Culley, Dennis E. / Kratz, Jonathan L. et al. | NTRS | 2018
    literature has examined the transient behavior of the turbomachinery in these systems. This paper describes a control system built around the hFan ...
    Schlagwörter: systems analysis , gas-turbine engine , Aircraft Propulsion And Power , dynamic systems analysis

    An Energy-Based Low-Order Approach for Mission Analysis of Air Vehicles in LEAPS

    Capristan, Francisco M. / Welstead, Jason R. | NTRS | 2018
    Center for over 30 years, and it is mainly used to analyze conventional aircraft (e.g., gas turbine-powered aircraft). One of the main features ...
    Schlagwörter: Systems Analysis And Operations Research

    Developing Coatings and Disks with 1500 Degrees F Capability

    Evans, L. / Telesman, I. / Nesbitt, J. et al. | NTRS | 2017
    11 x 14 poster for NASA exhibit at Turbo Expo. Images highlight work done for the Advanced Air Transport Technology Project, Compact Gas ...
    Schlagwörter: Aircraft Propulsion And Power

    Advanced Ceramic Materials for Aerospace Propulsion and Power

    Shyne, Rickey | NTRS | 2016
    Schlagwörter: Hybrid Electric Propulsion , Gas turbine engines , Aircraft Propulsion And Power

    Visions of the Future: Hybrid Electric Aircraft Propulsion

    Bowman, Cheryl L. | NTRS | 2016
    of traditional gas turbine propulsion and electric drive enabled propulsion. This technology suite includes elements of propulsion and ...
    Schlagwörter: electric propulsion , Aircraft Propulsion And Power , hybrid propulsion

    NASA Phase2 Unlimited Rights Final Report Research and Technology for Aerospace Propulsion Systems (RTAPS) Task Order: ERA Advanced Core Compressor Technology Program

    Daniel Lee / Peter Wood / Chuan He et al. | NTRS | 2016
    Aviation have partnered to investigate the technology barriers associated with improved fuel economy of large gas turbine engines. Crucial to ...
    Schlagwörter: Aircraft Propulsion and Power

    Non-Contacting Finger Seals Static Performance Test Results at Ambient and High Temperatures

    Proctor, Margaret P. | NTRS | 2016
    The non-contacting finger seal is an advanced seal concept with potential to reduce specific fuel consumption in gas turbine engines by 2 ...
    Schlagwörter: Aircraft Propulsion And Power

    Range and Endurance Tradeoffs on Personal Rotorcraft Design

    Snyder, Christopher A. | NTRS | 2016
    technology and customer requirements. Advancements in propulsion, energy systems and other technologies have enabled new vehicles and missions ...
    Schlagwörter: systems analysis , Aircraft Propulsion And Power