Zobrazeno 1 - 10
of 19
pro vyhledávání: '"L. J. Bober"'
Publikováno v:
Modern pediatrics. Ukraine. :15-21
The aim of the study was to analyze the data of Ukrainian cystic fibrosis (CF) patients entered to the European Cystic Fibrosis Society Patient Registry (ECFSPR) during 2017–2018 years, and compare with the parameters entered in previous years. Mat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f3ed0f7687d744b71f18bc9e7ffa67c7
https://doi.org/10.15574/sp.2020.110.15
https://doi.org/10.15574/sp.2020.110.15
Publikováno v:
Journal of Propulsion and Power. 7:452-461
Two Euler analysis techniques, finite difference and finite volume, are employed to predict the blade surface pressure distributions of a large scale advanced propeller. The predicted pressure distributions are compared with wind tunnel data. Both te
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3f54951c02a95f41690c47ad97e83763
https://doi.org/10.2514/3.23347
https://doi.org/10.2514/3.23347
Publikováno v:
Journal of Propulsion and Power. 3:277-282
A three-dimensional Euler code, previously developed for high-speed propellers, was rewritten and vectorized for the Cray computer. First-order accurate, implicit integration was combined with approximate factorization, central differences, and const
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1b35affd2a02637147421b0ff9221ca9
https://doi.org/10.2514/3.22985
https://doi.org/10.2514/3.22985
Publikováno v:
AIAA Journal. 24:1043-1045
Propeller noise in the acoustic near field is presently determined through the integration of the pressure-time history in the tangential direction of a numerically generated flowfield around a propfan of SR-3 type, including the shock wave system in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d839ddea59fcb0213c3b3b92d98f68d9
https://doi.org/10.2514/3.9386
https://doi.org/10.2514/3.9386
Autor:
L. K. Chang, L. J. Bober
Publikováno v:
17th Joint Propulsion Conference.
The assumptions on which conventional propeller aerodynamic performance analyses are based can be seriously violated when advanced high speed propellers are analyzed. Studies were performed using a lifting line representation for the propeller to det
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::28c2f43a168f7430cb8fa895051ae91d
https://doi.org/10.2514/6.1981-1564
https://doi.org/10.2514/6.1981-1564
Publikováno v:
21st Aerospace Sciences Meeting.
To overcome the limitations of classical propeller theory, a computer program, NASPROP-E, was developed which solves for the flow field surrounding a multibladed propeller and axisymmetric nacelle combination using a finite difference method. The gov
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a9dd691b5516c5e6d6bbaf986abe2866
https://doi.org/10.2514/6.1983-188
https://doi.org/10.2514/6.1983-188
Publikováno v:
12th Propulsion Conference.
A combined experimental and analytical program was conducted to investigate the effects of boundary layer changes on the flow over high angle boattail nozzles. The tests were run on an isolated axisymmetric sting mounted model. Various boattail geome
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::772aebfca855ee3164d5ae24cc9cbe29
https://doi.org/10.2514/6.1976-676
https://doi.org/10.2514/6.1976-676
Publikováno v:
21st Joint Propulsion Conference.
A three-dimensional Euler code, previously developed for high speed propellers, was rewritten and vectorized for the Cray computer. Calculations were compared with previous results and measurements. The new code requires less memory and is more than
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::85e731f90b6806dad2961dcb943c287f
https://doi.org/10.2514/6.1985-1263
https://doi.org/10.2514/6.1985-1263
Publikováno v:
22nd Joint Propulsion Conference.
An implicit approximate factorization scheme in conjunction with a new boundary treatment was used to compute the inviscid flow field about an advanced high-speed propeller. The method of characteristics was used to apply impermeable boundary conditi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2da5e037c8e7d31eb1046319480e434a
https://doi.org/10.2514/6.1986-1521
https://doi.org/10.2514/6.1986-1521
Publikováno v:
21st Aerospace Sciences Meeting.
An argon ion laser velocimeter with four beams was used to measure the detailed flow-field of an advanced eight blade propeller with 45% of tip sweep in an 8x6 foot supersonic wind tunnel. Data were obtained at a free stream Mach number of 0.8, the d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::115107d4dacbfdfebe981bdc49ea57af
https://doi.org/10.2514/6.1983-189
https://doi.org/10.2514/6.1983-189