Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Nelson Pedreiro"'
Autor:
Nelson Pedreiro
Publikováno v:
Biblioteca Digital de Teses e Dissertações do ITAInstituto Tecnológico de AeronáuticaITA.
O estudo da qualidade de vôo de uma aeronave envolve a interação entre a mesma e o piloto que irá operá-la. No presente trabalho, um modelo matemático do piloto humano é utilizado no estudo dessa interação. Desta forma, as equações que reg
Publikováno v:
Journal of Guidance, Control, and Dynamics. 24:417-427
Vibrations following the e ring of thrusters to dump wheel momentum degrade pointing performance of a reaction-wheel controlled spacecraft. The use of input shaping is suggested to modulate thruster pulses with a set of properly timed impulses to sup
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dcc2282f4c1ee96a594cb51487518b05
https://doi.org/10.2514/2.4737
https://doi.org/10.2514/2.4737
Publikováno v:
Journal of Aircraft. 36:981-986
An experimental investigation has been conducted to determine the effectiveness of ailerons in the high angleof-attack regime in the presence of forebody tangential blowing. Forebody blowing generates both roll and yaw moments, but independent contro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b92e6257e0fb57f80544c673dd621aa2
https://doi.org/10.2514/2.2539
https://doi.org/10.2514/2.2539
Autor:
Fredrik Rehnmark, Mark Pryor, Buck Holmes, David Schaechter, Nelson Pedreiro, Connie Carrington
Publikováno v:
48th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference.
Launch vehicle payload capacity and the launch environment represent two of the most operationally limiting constraints on space system mass, volume, and configuration. Large-scale space science and power platforms as well as transit vehicles have be
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6ee1ec4161898d377cda6f9087821407
https://doi.org/10.2514/6.2007-2184
https://doi.org/10.2514/6.2007-2184
Autor:
Chien-Chung Chen, Hamid Hemmati, Abhijit Biswas, William H. Farr, Nelson Pedreiro, Gerardo Ortiz
Publikováno v:
SPIE Proceedings.
A simplified laser communications (lasercom) system architecture, primarily for a deep-space flight transceivers, can be realized by decoupling the lasercom optical components from the host spacecraft using a disturbance-free platform (DFP) developed
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e999472177fe7bbb7424bdcc0dbc08f4
https://doi.org/10.1117/12.660264
https://doi.org/10.1117/12.660264
Publikováno v:
UV/Optical/IR Space Telescopes: Innovative Technologies and Concepts II.
The Terrestrial Planet Finder Coronagraph is a visible-light coronagraph to detect planets that are orbiting within the Habitable Zone of stars. The coronagraph instrument must achieve a contrast ratio stability of 2e-11 in order to achieve planet de
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::02a843151b165421f8b4c47e330645dd
https://doi.org/10.1117/12.618939
https://doi.org/10.1117/12.618939
Publikováno v:
AIAA Guidance, Navigation, and Control Conference and Exhibit.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0bc9ca59811c2f986bfb42426ed50e0d
https://doi.org/10.2514/6.2005-5875
https://doi.org/10.2514/6.2005-5875
Autor:
Brian W. Foster, Michael A. Gonzales, Donald E. Roth, Lockheed Martin, Nelson Pedreiro, Thomas L. Trankle
Publikováno v:
AIAA Guidance, Navigation, and Control Conference and Exhibit.
*† ‡ § ** The application of an advanced architecture in which the payload and the spacecraft bus are separate bodies that fly in close-proximity formation is considered for agile spacecraft. The proposed architecture provides a solution to the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5b428457e0800f9daa0a88d175cae79f
https://doi.org/10.2514/6.2005-5876
https://doi.org/10.2514/6.2005-5876
Autor:
Donald E. Roth, Brian W. Foster, Lockheed Martin, Nelson Pedreiro, Kyle Brookes, Michael A. Gonzales
Publikováno v:
AIAA Guidance, Navigation, and Control Conference and Exhibit.
A novel spacecraft architecture, known as Disturbance–Free Payload (DFP), has been presented and successfully demonstrated experimentally. In this architecture, the payload and the spacecraft are separate bodies that fly in close-proximity formatio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3f4c115ae37754d4e3794c3f8e843a02
https://doi.org/10.2514/6.2004-5247
https://doi.org/10.2514/6.2004-5247
Publikováno v:
AIAA/AAS Astrodynamics Specialist Conference and Exhibit.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3341775ed6cd05d43ab03951f63d30b0
https://doi.org/10.2514/6.2004-5205
https://doi.org/10.2514/6.2004-5205