Zobrazeno 1 - 10
of 52
pro vyhledávání: '"B. C. Campos"'
Publikováno v:
Revista Brasileira de Ciência do Solo, Vol 25, Iss 3, Pp 583-592 (2001)
O presente trabalho foi realizado nas safras de 1994/95, 1996/97, 1997/98 e 1998/99, objetivando avaliar a eficiência das estirpes de Bradyrhizobium recomendadas pela pesquisa, pela determinação da capacidade competitiva e da eficiência na fixaç
Externí odkaz:
https://doaj.org/article/fe63cef622324d5da350307e447f1b42
Publikováno v:
Revista Brasileira de Ciência do Solo, Vol 23, Iss 2, Pp 383-391 (1999)
O impacto de plantas de inverno sobre a estabilidade estrutural do solo, antecedendo a cultura do milho sob plantio direto, foi avaliado em Podzólico Vermelho-Amarelo. O experimento foi realizado no campus da Universidade Federal de Santa Maria, de
Externí odkaz:
https://doaj.org/article/26fbe1a40a434539aa684b172ce9c543
Publikováno v:
Applied Mechanics, Vol 4, Iss 1, Pp 141-178 (2023)
The present two-part paper concerns the active vibration suppression for the simplest damped continuous system, namely the transverse oscillations of an elastic string, with constant tension and mass density per unit length and friction force proport
Externí odkaz:
https://doaj.org/article/ce2e9fa087cf41a9894f1d5ea0117a9a
Publikováno v:
Applied Mechanics, Vol 3, Iss 4, Pp 1352-1384 (2022)
The question addressed is whether the free oscillations of a continuous system can be suppressed, or at least the total energy reduced, by applying external forces, using as example the linear undamped transverse oscillations of a uniform elastic str
Externí odkaz:
https://doaj.org/article/b8c78ef17429498a8c51f8587f204ff9
Publikováno v:
Aerospace, Vol 10, Iss 9, p 760 (2023)
The safety zone around the flight path of a rocket is determined by the fall of debris in the case of an accidental explosion or commanded termination. The trajectory of a tumbling body in a vertical plane is determined by specifying the velocity, fl
Externí odkaz:
https://doaj.org/article/47274f1d4675407396eb3f553a1889ff
Publikováno v:
Journal of Aircraft. 59:515-535
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::156eef6b8ee738ef0172c5e54b01a92e
https://doi.org/10.2514/1.c036112
https://doi.org/10.2514/1.c036112
Autor:
Luís M. B. C. Campos, Paulo J. S. Gil
Publikováno v:
Aerospace, Vol 7, Iss 9, p 131 (2020)
The two dimensional gravity turn problem is addressed allowing for the effects of variable rocket mass due to propellant consumption, thrust and thrust vector angle, lift and drag forces at an angle-of-attack and atmospheric mass density varying with
Externí odkaz:
https://doaj.org/article/28df5b90456e4dd49133c482e2dc9f9c
Autor:
Luís M. B. C. Campos
Publikováno v:
Aerospace, Vol 2, Iss 1, Pp 17-90 (2015)
Air traffic is growing at a steady rate of 3% to 5% per year in most regions of the world, implying a doubling every 15–25 years. This requires major advances in aircraft noise reduction at airports, just not to increase the noise exposure due to t
Externí odkaz:
https://doaj.org/article/ac576cc5c58b40c092517ae2d9d4ebc3
Publikováno v:
Aerospace; Volume 9; Issue 5; Pages: 249
The variation in stability derivatives with airspeed and angles of attack and sideslip is determined using only the dependence of the aerodynamic forces and moments on the modulus and direction of the velocity. Analytic extrapolation factors are obta
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::53778197fee7dadd69e6693fddc6d62d
Autor:
Luís M. B. C. Campos, Paulo J. S. Gil
Publikováno v:
Aerospace, Vol 5, Iss 3, p 88 (2018)
The calculation of rocket trajectories is most often performed using purely numerical methods that account for all relevant parameters and provide the required results. There is a complementary need for analytical methods that make more explicit the
Externí odkaz:
https://doaj.org/article/5c858e4a369c4351b54b49dbe50ccb4f