Results 131 to 140 of about 9,950,957 (390)
A Data‐Driven Approach to Integrated Adaptive Morphing and Guidance for Cruise Missiles
International Journal of Mechanical System Dynamics, EarlyView.ABSTRACT To address the complex coupling between aerodynamic characteristics and guidance control for morphing flight missiles, this study proposes a data‐driven approach to integrated adaptive morphing and guidance. Firstly, an aerodynamic surrogate model is constructed using a fully connected neural network (FCNN), mapping the configuration ...
Ming‐Yu Wu +6 more
wiley +1 more source
Ground Measurements of Airplane Shock-Wave Noise at Mach Numbers to 2.0 and at Altitudes to 60,000 Feet [PDF]
The intensity of shock-wave noise at the ground resulting from flights at Mach numbers to 2.0 and altitudes to 60,000 feet was measured. Meagurements near the ground track for flights of a supersonic fighter and one flight of a supersonic bomber are ...
Lina, Lindsay J., Maglieri, Domenic J.
core +1 more source
The benefits and challenges of using dense Mode‐S aircraft winds at ECMWF
Quarterly Journal of the Royal Meteorological Society, EarlyView.In November 2022 ECMWF stopped using Mode‐S winds because their very high density in central Europe caused problems for the assimilation system. The data were reintroduced operationally in November 2023 combined with an improved aircraft thinning algorithm.
Bruce Ingleby
wiley +1 more source
Altitude performance of a low-noise-technology fan in a turbofan engine with and without a sound suppressing nacelle [PDF]
Test variables were inlet Reynolds number index (0.2 to 0.5), flight Mach number (0.2 to 0.8), and flow distortion (tip radial and combined circumferential - tip radial patterns). Results are limited to fan bypass and overall engine performance.
Abdelwahah, M. +2 more
core +1 more source
A Moving Frame Algorithm for High Mach Number Hydrodynamics
, 2003 We present a new approach to Eulerian computational fluid dynamics that is designed to work at high Mach numbers encountered in astrophysical hydrodynamic simulations.
Pen, Ue-Li, Trac, Hy
core +2 more sources
Exploring New Chemical Paths in Quantum AI: Preliminary Accomplishments and Future Perspectives
Advanced Quantum Technologies, EarlyView.Two new strategies derived from Chemical AI to promote the advancement of sustainable quantum technologies are presented and discussed. The first strategy relies on the chemical implementation of molecular fuzzy sets, which are quantum mixed states associated with chemical microheterogeneous systems. The second strategy relies on photochromic compounds
Pier Luigi Gentili
wiley +1 more source
Advanced Quantum Technologies, EarlyView.High‐precision time‐delay measurements are demonstrated using frequency‐resolved Hong‐Ou Mandel (HOM) interference with weak coherent states. The method, by exploiting the quantum eraser phenomenon, achieves low uncertainty even for delays exceeding the photon coherence time, where traditional HOM interferometry fails, thus confirming theoretical ...
Francesco Di Lena +9 more
wiley +1 more source
High Reynolds Number Test of the Boeing TR77 Airfoil in the Langley 0.3-Meter Transonic Cryogenic Tunnel [PDF]
A Boeing TR77 airfoil associated with the Advanced Technology Airfoil Test (ATAT) program was tested in the Langley 0.3 m Transonic Cryogenic Tunnel. Limited analysis of the data indicated that increasing Reynolds number for a fixed Mach number resulted ...
Chu, Julio +3 more
core +1 more source
MATHEMATICAL MODEL OF THE TSAGI’S TRANSONIC WIND TUNNEL T-106 AS A MACH NUMBER CONTROL OBJECT
Научный вестник МГТУ ГА, 2016 In this paper we propose a method of constructing a mathematical model of the TsAGI’s compressor transonic wind tunnel T-106 as a Mach number control object.
K. D. Bukharov +2 more
doaj