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Saturday, July 25, 2020 | History

3 edition of Dynamic simulation of a wave rotor topped turboshaft engine found in the catalog.

Dynamic simulation of a wave rotor topped turboshaft engine

Dynamic simulation of a wave rotor topped turboshaft engine

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  • 6 Currently reading

Published by National Aeronautics and Space Administration, National Technical Information Service, distributor in [Washington, DC], [Springfield, Va .
Written in English

    Subjects:
  • Turboshafts.,
  • Inlet pressure.,
  • Dynamic characteristics.,
  • Flow velocity.,
  • Fuel flow.,
  • Transient response.,
  • Computerized simulation.

  • Edition Notes

    StatementR.B. Greendyke, D.E. Paxson, M.T. Schobeiri.
    SeriesNASA technical memorandum -- 107514
    ContributionsPaxson, D. E., Schobeiri, M. T., United States. National Aeronautics and Space Administration.
    The Physical Object
    FormatMicroform
    Pagination1 v.
    ID Numbers
    Open LibraryOL17125164M

    Daniel E. Paxson's 78 research works with citations and 3, reads, including: Preliminary Computational Assessment of Disk Rotating Detonation Engine Configurations. Figure Engine Gearbox Assembly Plan (GTGH) Figure Wave Rotor Schematic and Implementation Diagram Figure Comparison T-s Diagram for Wave Rotor Applications Figure Specific Power and SFC Analysis for Wave Rotor Topped Engines

    Air Force Institute of Technology Hobson Way Wright-Patterson Air Force Base, OH Commercial: | DSN: The general advantage of using a wave rotor becomes apparent when comparing the thermodynamic cycles of baseline and wave-rotor-enhanced engines. Figure 5 shows a schematic temperature-entropy diagram of a gas turbine baseline engine and a corresponding wave-rotor-topped engine. The shown case is the one most commonly discussed in references.

    A NUMERICAL MODEL FOR DYNAMIC WAVE ROTOR ANALYSIS D. E. Paxson" NASA Lewis Research Center Brookpark Rd., Cleveland, Ohio Mail Stop () Abs_act A numerical model has been developed which can predict the dynamic (and steady state) performance of a wave rotor, given the geometry and time dependent boundary Size: KB.   Pressure wave devices use shock waves to transfer energy directly between fluids without additional mechanical components, thus having the potential for increased efficiency. The wave rotor is a promising technology which uses shock waves in a self-cooled dynamic pressure exchange between fluids. For high-pressure, high-temperature topping cycles, it results in increased engine Cited by:


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Dynamic simulation of a wave rotor topped turboshaft engine Download PDF EPUB FB2

The dynamic behavior of a wave rotor topped turboshaft engine is examined using a numerical simulation. The simulation utilizes an explicit, one-dimensional, multi-passage, CFD based wave rotor code in combination with an implicit, one-dimensional, component level dynamic engine simulation code.

Transient responses to rapid fuel flow rate changes and. Researches on Modeling and Simulation of Turbo-Shaft Engine and Main Rotor System Simple Numerical Modeling for Gasdynamic Design of Wave Rotors Koji Okamoto andCited by: The dynamic behavior of a wave rotor topped turboshaft engine is examined using a numerical simulation.

The simulation utilizes an explicit, one-dimensional, multi-passage, CFD based wave rotor. Wave rotor optimization for gas turbine engine topping cycles. Jack Wilson and Dynamic Simulation of a Wave-Rotor-Topped Turboshaft Engine. Greendyke, Dynamic simulation of a wave rotor topped turboshaft engine.

Greendyke, Cited by: The dynamic behavior of a wave rotor topped turboshaft engine is examined using a numerical simulation. The simulation utilizes an explicit, one-dimensional, multi-passage, CFD based wave rotor code in combination with an implicit, one-dimensional, component level dynamic engine simulation code.

Performance Enhancement of Microturbine Engines Topped With Wave Rotors 13 December | Journal of Engineering for Gas Turbines and Power, Vol. No. 1 A Review of Wave Rotor Technology and Its ApplicationsCited by: The simulation utilizes an explicit, one-dimensional, multi-passage, CFD based wave rotor code in combination with an implicit, one-dimensional, component level dynamic engine simulation code.

conditions of theAllison model turboshaft engine topped by a four-port wave rotor, as shown in Fig. It compares specific shaft horsepower and decreases in specific fuel consumption for the topped and baseline engines as a percent improvement for the off design points.

In the above-described wave rotor, both gas and air inlet ports. CHAPTER 7 HELICOPTERS AND TURBOSHAFT POWER PLANTS engine power, any change in power changes the torque. The greater the engine power, the greater of by the engine. The rotor disengages automatically from the engine during engine failure or shutdown.

During autorotation, the rotor blades turn in the same direction as when engine driven. Abstract. To overcome the bottleneck of traditional gas wave refrigeration, an improved wave rotor refrigerator (WRR) cycle has been proposed, in which the expansion work was recycled during the process of by: 4.

wave rotor sizes indicated the code could be used on a pressure wave supercharger scaled to fit today’s Remotely Piloted Aircraft engines to predict performance. The wave rotor code predicts the performance of the scaled pressure wave supercharger to be similar toCited by:   In this paper, simulation of a high fidelity turboshaft engine-alternator model for turboelectric propulsion system is derived.

To develop an aero-thermal engine model, GE T turboshaft engine data is used and constructed model is connected to an alternator model on MATLAB/Simulink : I.

Yazar. American Institute of Aeronautics and Astronautics Sunrise Valley Drive, Suite Reston, VA Dynamics of Rotors on Hydrodynamic Bearings. Eling *1, R. van Ostayen. 2, D. Rixen. Mitsubishi Turbocharger and Engine Europe, 2. Delft University of Technology, 3. Technical University Munich *Corresponding author: [email protected] Abstract: Rotordynamic analysis is a crucial step in the development of rotor bearing systems.

JOHN M. VANCE was professor of mechanical engineering at Texas A&M University, retiring in He received his PhD () degree from The University of Texas at Austin. His book Rotordynamics of Turbomachinery (Wiley) has sold more than 3, copies and is used by turbomachinery engineers around the world.

He is an inventor on several patents relating to rotating machinery and vibration. Get this from a library. Dynamic simulation of a wave rotor topped turboshaft engine.

[Robert B Greendyke; Daniel E Paxson; M T Schobeiri; United States. National Aeronautics and. Engineering, Wright State University, Modeling and Simulation of a Dynamic Turbofan Engine Using MATLAB/Simulink. A dynamic, high-bypass turbofan engine has been developed in the modeling and simulation environment of MATLAB/Simulink.

Individual elements, including the fan,Cited by: 4. Journal of Guidance, Control, and Dynamics; Journal of Propulsion and Power; Journal of Spacecraft and Rockets; Journal of Thermophysics and Heat Transfer; Browse All Journals; Browse All Virtual Collections; Books.

AIAA Education Series; Library of Flight; Progress in Astronautics and Aeronautics; The Aerospace Press; Browse All Books; Meeting Author: Thomas J. Biesiadny, Brett Berger, Gary A. Klann, David A. Clark. The surge margin of the topped engine is equivalent to that of the production engine.

The wave rotor maintains high off-design performance. References 1. Greendyke, R.B.; Paxson, D.E.; and Schobeiri, M.T.: Dynamic Simulation of a Wave Rotor Topped Turboshaft Engine. AIAA Paper (NASA TM), Size: 35KB. The results of thermodynamic analyses performed for the small gas turbine topped with a 4-port wave rotor show that engine overall efficiency and specific work may increase by up to about 33% without changing the compressor.

Expecting similar advantages, it is suggested to use wave rotors in novel R compression refrigeration systems. turboshaft engines, and large (80, tolb, class) high bypass ratio turbofan engines are evaluated. Wave rotor performance levels are calculated using a one-dimensional design/analysis code.

Baseline and wave rotor-enhanced engine performance levels are obtained from a cycle deck in which the wave rotor is. AbstractWave rotors are rotating equipment designed to exchange energy between high and low enthalpy fluids by means of unsteady pressure waves.

In turbomachinery, they can be used as topping devices to gas turbines aiming to improve performance. The integration of a wave rotor into a ground power unit is far more attractive than into an aeronautical application, since it is not Cited by: 2.wave rotor, and Swissauto Wenko AG of Switzerland is the only company who produces a modern version of the Comprex®, called the Hyprex®.

This type of wave rotor is designed for small gasoline engines applications [3]. In a gas-turbine engine, the Wave Rotor is used as a top-pressure stage, in order to obtain a higher overallFile Size: KB.