Zobrazeno 1 - 10
of 40
pro vyhledávání: '"Odenir de Almeida"'
Publikováno v:
Journal of Aerospace Technology and Management, Vol 16 (2024)
Small multirotor unmanned aerial systems (sUAS) have become more accessible and efficient recently, spurring their development for various personal and commercial uses. However, this rapid evolution raises concerns about security, control, and public
Externí odkaz:
https://doaj.org/article/07d89e5bcc514627a31935c3ba6b5e03
Publikováno v:
Journal of Aerospace Technology and Management, Vol 13, Iss 1, Pp 0221-0221 (2021)
This work presents selected results of an unconventional aircraft development campaign. Engine installation at the rear part of the fuselage imposed design constraints for air intakes that should be used for cooling purposes. Trial and error flight t
Externí odkaz:
https://doaj.org/article/188650b30d2747eebc31f9367698f105
Autor:
Odenir de Almeida, Frederico Carnevalli de Miranda, Olivio Ferreira Neto, Fernanda Guimarães Saad
Publikováno v:
Journal of Aerospace Technology and Management, Vol 10 (2018)
This paper describes the design and the construction details of a medium size subsonic low-speed wind tunnel, which has been designed to achieve 90 m/s in the working section with expected low intensity turbulence level, making it available for resea
Externí odkaz:
https://doaj.org/article/689613ce37bd4ed6961a0452e9d1725a
Publikováno v:
Journal of Aerospace Technology and Management, Vol 6, Iss 1 (2014)
The noise source distribution of a short-cowl coaxial jet operating at different velocity ratios is described in this work. This was motivated by an ongoing research about noise prediction of coaxial jets through Acoustic Analogy with purposes of ind
Externí odkaz:
https://doaj.org/article/49359ddc8fec4e4b98dca6d2c956f607
Autor:
Odenir de Almeida
Publikováno v:
Biblioteca Digital de Teses e Dissertações do ITAInstituto Tecnológico de AeronáuticaITA.
A Computational Aeroacoustics (CAA) and a novel semi-empirical model is developed for predicting the noise generated by the jet flow through dual stream (coaxial) nozzles, as found in modern turbofan engines. The acoustic source model was developed i
Publikováno v:
The International Journal of Acoustics and Vibration. 26:248-258
For achieving accurate aeroacoustic measurements to the aircraft industry, a low-speed wind tunnel, primarily designed for aerodynamic testing, is modified to provide lower background noise environment. Based on data from single microphone at differe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8fb64a467d24d4b67693b4bbd9de81cc
https://doi.org/10.20855/ijav.2021.26.31803
https://doi.org/10.20855/ijav.2021.26.31803
Autor:
Odenir de Almeida
Publikováno v:
International Journal of Advanced Engineering Research and Science. 8:159-172
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8f469bf16cfd0b12c6e4ee8c95fc740c
https://doi.org/10.22161/ijaers.83.16
https://doi.org/10.22161/ijaers.83.16
Publikováno v:
International Journal of Advanced Engineering Research and Science. 5:264-269
The current concern about reducing dependence on fossil fuels and issues about environmental conditions have guided the survey for renewable energies around the world. The present work was focused in the study, design, construction and laboratorial t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::feeb313cf7ce9ed2056ab33d91db1a5b
https://doi.org/10.22161/ijaers.5.3.35
https://doi.org/10.22161/ijaers.5.3.35
Publikováno v:
Applied Acoustics. 182:108263
This work aimed to develop an aeroacoustics analysis of a nose landing gear through rational and low-cost wind tunnel tests to develop potential noise mitigation technologies of aircraft components. This approach led to using a nose landing gear mode
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::755b9d61a0e8a1591af033485c1dbf81
https://doi.org/10.1016/j.apacoust.2021.108263
https://doi.org/10.1016/j.apacoust.2021.108263
Publikováno v:
International Journal of Engineering Research and Applications. :63-71
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6ffa12a086a52715be5583e7ede33361
https://doi.org/10.9790/9622-0704036371
https://doi.org/10.9790/9622-0704036371