Zobrazeno 1 - 10
of 43
pro vyhledávání: '"Valeriu Vilag"'
Publikováno v:
Aerospace, Vol 10, Iss 11, p 928 (2023)
As a main component of most gas-turbine engines, the axial flow turbines have been in a process of continuous improvement, reaching high efficiencies and reliability. A well-known drawback of these systems is the rapid decrease in performance when op
Externí odkaz:
https://doaj.org/article/3f3cd8e2e8ea47da9083ee593695b38b
Autor:
Emilia PRISACARIU, Tudor PRISECARU, Valeriu VILAG, Cosmin SUCIU, Cristian DOBROMIRESCU, Marius ENACHE, Razvan NICOARA
Publikováno v:
INCAS Bulletin, Vol 13, Iss 3, Pp 113-122 (2021)
In general, the Schlieren visualization method is used to qualitatively describe phenomena. However, recent studies have attempted to convert the classical Schlieren system into a quantitative method to describe certain flow parameters. This paper ai
Externí odkaz:
https://doaj.org/article/fbd77946606f45d9b68ca2151cc1990b
Autor:
Valeriu Vilag, Emilia Prisacariu, Marius Enache, Cristian Dobromirescu, Cosmin Suciu, Razvan Nicoara, Tudor Prisecaru
Publikováno v:
INCAS Bulletin, Vol 13, Iss 3, Pp 113-122 (2021)
In general, the Schlieren visualization method is used to qualitatively describe phenomena. However, recent studies have attempted to convert the classical Schlieren system into a quantitative method to describe certain flow parameters. This paper ai
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ee45abb53682f759f6b194d12466ed4f
https://doi.org/10.13111/2066-8201.2021.13.3.10
https://doi.org/10.13111/2066-8201.2021.13.3.10
Publikováno v:
International Journal of Aeronautical and Space Sciences. 22:359-365
During service, a turbine engine undergoes frequently dynamic operations. Because of the changes in mass flow, temperature, pressure, as well as the different reaction of the components of turbine to these changes, the turbine performances may vary s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ffd89f3a82e2072bc5bc1b6564774559
https://doi.org/10.1007/s42405-020-00312-4
https://doi.org/10.1007/s42405-020-00312-4
Publikováno v:
Materiale Plastice. 56:687-692
The extension of use of light advanced polymer composites from structural parts of an aircraft to all kinds of components of the engine is presently very limited by the knowledge of both technological development process and materials behaviour durin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0f2d16cad6fe43e080810a7a872f6dcc
https://doi.org/10.37358/mp.19.4.5254
https://doi.org/10.37358/mp.19.4.5254
Gas turbines represent energetic machines that operate following the Brayton thermodynamic cycle [6], [16] creating mechanical power and/or thrust. The majority of them use atmospheric air as working fluid but some are working in a closed loop with e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::161ba1cab9b738abc67b4e8d2ae8fd98
https://doi.org/10.1115/1.862025_ch6
https://doi.org/10.1115/1.862025_ch6
Publikováno v:
Transportation Research Procedia. 29:330-338
The paper, elaborated in the framework of the ESA activity "Green thruster for attitude control and orbital manoeuvres of small satellites (GREENTH)", focuses on the preliminary stages of an experimental program aiming to evaluate the feasibility and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::59a2cf512bdb0dc9a266240312d4dfb8
https://doi.org/10.1016/j.trpro.2018.02.030
https://doi.org/10.1016/j.trpro.2018.02.030
Publikováno v:
Energy Procedia. 112:344-351
This paper focuses on the numerical study of a shaft's cooling, positioned at the end of the gas turbine hot section. Due to convection and conduction phenomena, the high temperatures of the primary gas flow are transferred -via the power turbine's b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a5f75cd17ab15bc40d3883b90ec3c1c3
https://doi.org/10.1016/j.egypro.2017.03.1063
https://doi.org/10.1016/j.egypro.2017.03.1063
Publikováno v:
Energy Procedia. 112:306-313
The present technology in gas turbine engines is to burn fuel in the combustion chamber and occasionally in the postcombustion chamber. Current conventional developments of gas turbine aero-thermodynamics provide small efficiency and power increase,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::969640919baa1dc0a08ea707748554a5
Autor:
Valeriu Vilag, Cleopatra Cuciumita
Publikováno v:
Volume 2B: Turbomachinery.
Launch systems development today is heading in two, seemingly divergent, directions. A first direction is towards bigger launchers, designed to carry more than 50 tons into low Earth orbit (LEO). On the other hand, there’s growing interest from gov
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8f90c91c7dba8512062ea8ddd83ed2e2
https://doi.org/10.1115/gt2019-91255
https://doi.org/10.1115/gt2019-91255