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A Numerical Study on Trailing Edge Jet in Distributed Propulsion
A Numerical Study on Trailing Edge Jet in. Distributed Propulsion System. Jing- yao Duan*1, Wei Yuan2, Qiu-shi Li3. School of Energy and Power Engineering, ...
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Numerical Studies of Jet-Wing Distributed Propulsion - Virginia Tech
Aug 25, 2004 ... Distributed Propulsion, Trailing Edge Noise. Copyright © 2004, Jessica N. Walker . Page 2. Numerical Studies of Jet-Wing Distributed Propulsion and a ...... the propulsion system with the airframe, which is a major advantage.
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Numerical Assessment of the Performance of Jet-Wing Distributed
Aug 31, 2003 ... propulsive efficiency, the trailing edge thickness of the 11% thick ... The studies show that jet-wing distributed propulsion can be used to ..... Figure 2.4: The velocity profile of a perfect distributed propulsion body/engine system.
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Numerical Study of the Aerodynamic Characteristics of a Plunging
thrust), the propulsion efficiency and the shed vortices in the wake reveals that a proper ... Consequently, the experimental and numerical studies on flapping- wing aircraft ... plunging airfoil with flexible plate attached at the trailing edge in a still water ... step, but is firstly distributed on a virtual small straight line wake element ...
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A Numerical Study of Tank Pressure Control in Reduced Gravity
emerged as an alternative to direct venting is a zero boil-off system where a ... Suggested concepts include cryocoolers, heat pipes,6 point-wise or distributed systems, ... axial jet mixing as a means to control the tank pressure.14, 15 While the ...... A Numerical Study of the Turbulent Flow Past an Isolated Airfoil with Trailing.
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1 - NASA Technical Reports Server (NTRS)
aircraft near the trailing edge of the hybrid-wing- ... in its propulsion system, a study of the electric power distribution ... turboelectric distributed propulsion system and ... Numerical Propulsion System ... the core jet noise is substantially reduced.
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A Study of the Prediction of Cruise Noise and Laminar Flow Control
3.5.4 Numerical Evaluation of the Acoustically ... Acoustic Propagation From Trailing Edge .... The jet noise sources are treated as distributed noise sources J ..... propulsion system since new noise sources 'can be present during cruise. These.
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Co-Flow Jet Airfoil Trade Study Part II: Moment - University of Miami
Jun 16, 2014 ... This paper is Part II of a parametric study on CFJ airfoils. ... an injection slot near the leading edge (LE) and a suction slot near the trailing edge .... Interaction Package) CFD code is used to conduct the numerical sim- .... and low moment are desirable characteristics for a distributed propulsion system that ...
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MULTI-DISCIPLINARY DESIGN AND FEASIBILITY STUDY OF
STUDY OF DISTRIBUTED PROPULSION SYSTEMS. Hans-Jörg Steiner ... within the wing trailing edge) [6],[7]. • Multiple discrete ... distributing the thrust- producing jet stream in order to increase ..... fuselage types (numerical CFD results [30]).
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Distributed Propulsion Featuring Boundary Layer Ingestion Engines
Results show that the potential of distributed propulsion systems relies ... and since they allow engine placement close to the trailing edge they enable embedded ... study. This aircraft was the result of a multidisciplinary design optimization performed ... for both BLI and non-BLI propulsion systems are obtained by numerical.
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Noise Reduction Assessments and Preliminary - [email protected]
The embodiment of a distributed propulsion system allows to ingest the ... aircraft configuration on approach and at take-off, assuming that trailing edge noise and jet noise .... 5.1 Parametric Study of Trailing Edge Noise Radiated from an Aircraft Wing ...... ([16]- [19]), experimentally ([20]- [33]) and using numerical simulations.
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Programmable Surfaces - Center for Bits and Atoms - MIT
Mar 19, 2012 ... (an institute professor who shaped my study on energy systems), John W M. Bush .... D.1 Experiments with a synthetic jet made from a speaker and plastic cups. 103 ... 4-1 NASA / Rockwell YOV-10 aircraft with trailing edge rotating cylinder. ..... benefits of a distributed propulsion system may outweigh any ...
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Technical Challenges to Reducing Subsonic Transport Drag
higher aspect ratio wings, and synergistic propulsion/airframe integration ... Distributed Roughness. Elements ... Variable Camber Continuous Trailing Edge Flap System". ‾ Establishes ... Acoustic characteristics of jet-blown systems for powered lift. - Multiple ... Study the effects of wind tunnel walls, strut, and empennage on.
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futureACtechAAM.pdf - University of Cambridge
number of studies into future prospects for improvement have recently been carried out. .... reductions in aircraft CO2 emissions since the beginning of the jet era. ..... The other airframe noise treatment is landing-gear fairing; the trailing- edge flaps are ... An ultra-high-BPR distributed propulsion system is embedded in.
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Integration of the Silent Aircraft propulsion system
Nov 12, 2004 ... Initiative) aimed at determining whether the propulsion system for a “Silent. Aircraft” should be embedded ... 2 Qualitative study of podded versus embedded engines. 3 Quantitative .... high aspect ratio jet, and enhanced mixing within the exhaust duct. ... trailing edge, the noise can be reduced further. Jet ...
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Challenges and Opportunities for Noise Reduc
Advanced Aircraft Propulsion Airframe Integration and. Configurations .... Trailing edge interaction. Hot jet blockage of wing reflection. Jet-Flap: Reflection and ... exhaust distributed over large portions of the wing. .... Full systems noise studies for a BWB have proved challenging due to the current state of the art in noise.
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2. Roadmap for Distributed Propulsion - DisPURSAL Project
Jan 31, 2015 ... DisPURSAL – Distributed Propulsion and Ultra-high By-pass Rotor. Study at Aircraft Level. Deliverable lead ..... Physical and Numerical Testing . ..... Movables Trailing Edge ..... boundary layer flow on the fuselage surface using the nozzle jet of the Fuselage Fan (FF) propulsion system, the fuselage zero-lift ...
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DISTRIBUTED PROPULSION AND TURBOFAN SCALE EFFECTS
distributed propulsion aircraft. The engine ... PSW Propulsion System Weight incl. nacelle ... Jet t. Turbine c. Compressor pol Polytropic i. Immediately upstream of intake in ... In this study we have chosen to concentrate on ..... wing tips and all the way down to the trailing edge, a .... [7] Dippold, V.F., “Numerical Assessment of.
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Publications - Georgia Tech
Jet Effects on the Performance of a Circulation Control Wing Section,” in .... Hassan, A. A., Sankar, L. N., and Tadghighi, H., "Effects of Leading and Trailing Edge Flaps on Airfoil- .... Leading Edge Concept - A numerical Study", AIAA Journal of Aircraft, 40 (1), ..... on Distributed Computing Systems,' Proceedings of the NASA ...
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afrl-rb-wp-tr-2008-3055 numerical study of active flow control for a
Instantaneous iso-surfaces of vorticity magnitude in the trailing-edge region. . . . . . . . . . . 30. 20 ... pressure turbines in their propulsion systems. Due to a reduction in ..... [15] consisted of a row of jets uniformly distributed along the span of a ...
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