Zobrazeno 1 - 10
of 88
pro vyhledávání: '"Nguyen X. Vinh"'
Autor:
S Krishnakumar, Sandeep B Gaudana, Nguyen X Vinh, Ganesh A Viswanathan, Madhu Chetty, Pramod P Wangikar
Publikováno v:
PLoS ONE, Vol 10, Iss 5, p e0125148 (2015)
Unicellular diazotrophic cyanobacteria such as Cyanothece sp. ATCC 51142 (henceforth Cyanothece), temporally separate the oxygen sensitive nitrogen fixation from oxygen evolving photosynthesis not only under diurnal cycles (LD) but also in continuous
Externí odkaz:
https://doaj.org/article/7ea0ac2fbe2549f2bdc1cea2d15d9894
Publikováno v:
Journal of Guidance, Control, and Dynamics. 26:62-73
Acontrol lawisderivedandanalyzed thatstabilizesa classof unstableperiodicorbitsin theHillrestrictedthreebody problem. The control law is derived by stabilizing the short-time dynamics of motion about a trajectory by the use of a feedback law specie e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::449933b4bae19e3781cd5dcfd3d515ad
https://doi.org/10.2514/2.5015
https://doi.org/10.2514/2.5015
Publikováno v:
Acta Astronautica. 48:1-19
In a Newtonian central force field, the minimumfuel interception of a satellite, or a ballistic missile, in elliptic trajectory can be obtained via Lawden's theory of primer vector. To secure interception when the target performs evasive maneuvers, a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a4acecd8103b05abf8e930b14936d747
https://doi.org/10.1016/s0094-5765(00)00135-1
https://doi.org/10.1016/s0094-5765(00)00135-1
Publikováno v:
Journal of Spacecraft and Rockets. 37:768-775
Aerogravity assist enhances the technique of gravity assist through the use of a lifting vehicle that ies through the atmosphere of the swingby planet. An algorithm is developed that automatically searches for such trajectories to destination plan
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::42c209845419b04baa939a0f7cad7f60
https://doi.org/10.2514/2.3649
https://doi.org/10.2514/2.3649
Publikováno v:
Journal of Spacecraft and Rockets. 37:630-637
New, higher-order analytic solutions have recently been obtained for the critical cases of 1) ballistic skip trajectories with initial speed greater than the circular orbital speed, 2) shallow ballistic entry with entry speed less than the circular o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b423b6d0ecedef3a82c6b37c267f5eba
https://doi.org/10.2514/2.3611
https://doi.org/10.2514/2.3611
Publikováno v:
The Journal of the Astronautical Sciences. 46:283-305
The three-dimensional guidance problem has been extensively discussed in the open literature for several decades. However, because of the nonlinearity of the equations of relative motion, the analytical solution is generally expressed in the form of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6b438f4577d7fce55eb1b4989dd1337e
https://doi.org/10.1007/bf03546238
https://doi.org/10.1007/bf03546238
Publikováno v:
Journal of Guidance, Control, and Dynamics. 21:342-348
A new guidance law, which combines pursuit guidance and proportional navigation is proposed. This guidance law depends on two parameters that determine the relative importance of pursuit guidance and proportional navigation. Numerical simulations of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c015fc627e69dc99b08b6bbcdb2fde2c
https://doi.org/10.2514/2.4241
https://doi.org/10.2514/2.4241
Autor:
Nguyen X. Vinh, Ya-Wen Shih
Publikováno v:
Acta Astronautica. 41:103-112
In his classical paper on the “Schematic Study of Long-Range Semi-Ballistic Trajectories”, Pierre Contensou has proposed a type of entry trajectory which consists of a series of skip sub-arcs, intercalating with Keplerian sub-arcs in the vacuum.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a2c770fff2666ba915829de83bdb115b
https://doi.org/10.1016/s0094-5765(97)00203-8
https://doi.org/10.1016/s0094-5765(97)00203-8
Autor:
Nguyen X. Vinh, Zeal-Sain Kuo
Publikováno v:
Journal of Spacecraft and Rockets. 34:496-502
An improved technique for matching the asymptotic solutions of nonlinear differential equations is presented and successfully applied to the three-dimensional atmospheric skip trajectories. The classic method of matched asymptotic expansions is gener
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c66c00a79160877b56ff150260c1b834
https://doi.org/10.2514/2.3239
https://doi.org/10.2514/2.3239
Autor:
Zeal-Sain Kuo, Nguyen X. Vinh
Publikováno v:
Acta Astronautica. 40:1-11
An improved technique for matching the asymptotic solutions of non-linear differential equations is presented and successfully applied to the problem of evaluating the maximum deceleration during atmospheric entry of space vehicles. The classical met
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::83c7dabf2306cf65d95548fc10ef0a34
https://doi.org/10.1016/s0094-5765(97)00013-1
https://doi.org/10.1016/s0094-5765(97)00013-1