Results 121 to 130 of about 171,718 (354)
Scientific ReportsThe importance of fuel mixing for the progress of the scramjet engine is indisputable. The present article shows the importance of the non-equal multi-injector system for effective fuel distribution and flame holding inside the combustion segment of a ...
Zhongmian Fan +7 more
doaj +1 more source
Advanced Functional Materials, EarlyView.Free‐standing plasmonic gold‐based fractal antennas are fabricated by 3D nanoprinting, employing focused electron beam induced deposition and an optimized purification method to remove carbon while conserving structural fidelity. Simulation and experiment show broadband plasmonic activity, including customizable polarizability, thereby paving the way ...
Verena Reisecker +6 more
wiley +1 more source
Measurement System of a Magnetic Suspension System for a Jet Engine Rotor. [PDF]
Sensors (Basel), 2020 Kurnyta-Mazurek P, Kurnyta A, Henzel M.
europepmc +1 more source
The free jet as a simulator of forward velocity effects on jet noise [PDF]
A thorough theoretical and experimental study of the effects of the free-jet shear layer on the transmission of sound from a model jet placed within the free jet to the far-field receiver located outside the free-jet flow was conducted.
Ahuja, K. K. +2 more
core +1 more source
NASA/Pratt and Whitney experimental clean combustor program: Engine test results [PDF]
, 1977 A two-stage vorbix (vortex burning and mixing) combustor and associated fuel system components were successfully tested in an experimental JT9D engine at steady-state and transient operating conditions, using ASTM Jet-A fuel. Full-scale JT9D experimental
Fiorentino, A. J. +2 more
core +1 more source
Advanced Functional Materials, EarlyView.It is demonstrated that severe lattice distortion and coherent nanoprecipitates overcome the strength–ductility dilemma and mitigate discontinuous plastic flow (DPF) at 4.2 K. Such microstructural design enhances both thermal and athermal stress components, leading to exceptional mechanical performance.
Min Young Sung +11 more
wiley +1 more source
Design of a high-speed digital processing element for parallel simulation [PDF]
A prototype of a custom designed computer to be used as a processing element in a multiprocessor based jet engine simulator is described. The purpose of the custom design was to give the computer the speed and versatility required to simulate a jet ...
Cwynar, D. S., Milner, E. J.
core +1 more source
Inducing Chirality and Chiral Instabilities in Ferrogels with Homogenous Magnetic Fields
Advanced Functional Materials, EarlyView.By pre‐aligning magnetic particles into chains, significant chiral deformations are induced by fixing the base of a cylindrical actuator and applying a homogeneous magnetic field. Subsequent base rotation can drive the system into metastable states. Further rotation or reduction of field strength triggers a chiral instability, characterized by a switch
Francisco J. Vazquez‐Perez +4 more
wiley +1 more source
Coannular nozzle noise characteristics and application to advanced supersonic transport engines [PDF]
Recent programs in the field of jet noise, sponsored by the NASA Lewis Research Center, have indicated that the variable stream control engines (VSCE) which are being considered for advanced supersonic cruise aircraft have inherent jet noise advantages ...
Kozlowski, H.
core +1 more source
Tone-burst technique measures high-intensity sound absorption [PDF]
, 1971 Tone-burst technique, in which narrow-bandwidth, short-duration sonic pulse is propagated down a standing-wave tube, measures sound absorbing capacity of materials used in jet engine noise abatement. Technique eliminates effects of tube losses and yields
Powell, J. G., Van Houten, J. J.
core +1 more source