Zobrazeno 1 - 10
of 24
pro vyhledávání: '"Sotiris Kellas"'
Autor:
Nathaniel W. Gardner, Sotiris Kellas, Michael P. McNeill, Mohamed M. Abid, D.S. Dawicke, Derek M. Shannon, B. Andrew Jabola, William M. Johnston
Publikováno v:
2020 IEEE Aerospace Conference.
This paper describes the first known attempt of implementing full-field photogrammetry during the acceptance test of critical flight hardware the size ( $\mathrm{D}=4.4 \mathrm{m}$ ) of the Mars 2020 heatshield carrier structure. Mars 2020, NASA's ne
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::00d41309b1e8646439a311c5539655b7
https://doi.org/10.1109/aero47225.2020.9172359
https://doi.org/10.1109/aero47225.2020.9172359
Autor:
Sotiris Kellas
Publikováno v:
2017 IEEE Aerospace Conference.
Two full-scale passive Earth Entry Vehicles (EEV) with realistic structure, surrogate sample container, and surrogate Thermal Protection System (TPS) were built at NASA Langley Research Center (LaRC) and tested at the Utah Test and Training Range (UT
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::53318b47dea118a3dc65d2ab0a913b3d
https://doi.org/10.1109/aero.2017.7943744
https://doi.org/10.1109/aero.2017.7943744
Autor:
Rick Winski, Stergios J. Papadakis, Parul Agrawal, Cole Kazemba, Rob Maddock, Todd White, J. C. Leary, Clint Apland, Douglas S. Adams, Sotiris Kellas
Publikováno v:
2017 IEEE Aerospace Conference.
A system overview of the sample chain planned for use on a Comet Surface Sample Return mission is provided. The key actions that must be performed in order to acquire, condition, and protect the surface samples are described. Significant mission even
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::79db8c52904a38f80a2e5c995251a99f
https://doi.org/10.1109/aero.2017.7943721
https://doi.org/10.1109/aero.2017.7943721
Autor:
Sotiris Kellas
Publikováno v:
57th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference.
Results from the design, manufacturing, and testing of a lightweight Integrated Composite Stiffened Structure (ICoSS) concept, intended for multi-mission planetary entry vehicles are presented. Tests from both component and full-scale tests for a typ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::572f3258b64d0970e9bd006ed6e4fe5e
https://doi.org/10.2514/6.2016-1718
https://doi.org/10.2514/6.2016-1718
Publikováno v:
Journal of the American Helicopter Society. 55:32011-320118
NASA and its contractors are working on structural concepts for absorbing impact energy of aerospace vehicles. Recently, concepts in the form of multi-cell honeycomb-like structures designed to crush under load have been investigated for both space a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e835fc11eb42cfb37a9aa014fa573ce3
https://doi.org/10.4050/jahs.55.032011
https://doi.org/10.4050/jahs.55.032011
Publikováno v:
Journal of Aerospace Engineering. 22:229-239
This paper provides an overview of rotorcraft crashworthiness research being conducted at the National Aeronautics and Space Administration Langley Research Center under sponsorship of the Subsonic Rotary Wing aeronautics program. The research is foc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d698b69a4297322823702b028fb3b8f4
https://doi.org/10.1061/(asce)0893-1321(2009)22:3(229)
https://doi.org/10.1061/(asce)0893-1321(2009)22:3(229)
Autor:
Karen E. Jackson, Sotiris Kellas, Matthew E. Melis, Karen H. Lyle, Kelly S. Carney, Edwin L. Fasanella, Robin C. Hardy, Lisa E. Jones
Publikováno v:
Journal of Spacecraft and Rockets. 45:1042-1052
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::98035279763c522692f0a4068bad077c
https://doi.org/10.2514/1.31373
https://doi.org/10.2514/1.31373
Publikováno v:
Journal of Spacecraft and Rockets. 39:237-243
Dynamic finite element modeling of a series of penetrometer drop tests into soft clay that were conducted as part of the Mars sample return advanced technology program is discussed. Structural impacts into soil continue to challenge analysts to devel
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e33384f004609ab5e7cd34ec54176029
https://doi.org/10.2514/2.3805
https://doi.org/10.2514/2.3805
Autor:
Thomas M. Krivanek, Thomas G. Gyekenyesi, Evan J. Pineda, Sotiris Kellas, David E. Myers, Bart F. Zalewski, Daniel N. Kosareo, Genevieve D. Dixon
Publikováno v:
55th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference.
Four honeycomb sandwich panels, representing 1/16th arc segments of a 10-m diameter barrel section of the Heavy Lift Launch Vehicle, were manufactured and tested under the NASA Composites for Exploration and the NASA Constellation Ares V programs. Tw
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::acc1733671d2da59f8de771b6abf4813
https://doi.org/10.2514/6.2014-1052
https://doi.org/10.2514/6.2014-1052
Publikováno v:
Journal of Aircraft. 38:95-103
A composite fuselage concept for light aircraft has been developed to provide improved crashworthiness. The fuselage consists of a relatively rigid upper section, or passenger cabin, including a stiff structural e oor and a frangible lower section th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::badd54020143600163ea87bb5d7e11e9
https://doi.org/10.2514/2.2739
https://doi.org/10.2514/2.2739