Zobrazeno 1 - 10
of 12
pro vyhledávání: '"Darren Boyd"'
Autor:
Tyler Marcrum, John-Caleb Williams, Christopher S. Johnson, Matthew Pearce, Carson Pope, C. W. Van Neste, Charles Vaughan, Darren Boyd
Publikováno v:
Energies, Vol 17, Iss 12, p 2858 (2024)
Robotics is a highly active, multidisciplinary research area with a broad list of applications. A large research focus is to enhance modularity in order to expand kinematic capabilities, lower fabrication time, and reduce construction costs. Traditio
Externí odkaz:
https://doaj.org/article/0610c614f74b44729ba72ccdf96f5c44
Autor:
John A. Carr, Les Johnson, Darren Boyd, Brandon Phillips, Miria Finckenor, Brandon Farmer, Joseph C. Smith
Publikováno v:
Acta Astronautica. 205:267-280
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::09aa81d315856e13acc8bafb2293280e
https://doi.org/10.1016/j.actaastro.2023.02.001
https://doi.org/10.1016/j.actaastro.2023.02.001
Publikováno v:
WiSEE
In this paper, design and performance analysis of wireless deflection sensors with an automated test-bed is reported. A test bed is designed and built to accurately move an armature of a displacement sensor through the operational range in a repeatab
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a78bd026dbd57db44a9bbb097059eb09
https://doi.org/10.1109/wisee.2018.8637311
https://doi.org/10.1109/wisee.2018.8637311
Autor:
Jared Dervan, Andrew Heaton, Les Johnson, Benjamin Malphrus, Joseph A. Nuth, Michael Combs, Leslie McNutt, John A. Carr, Aaron Zucherman, Alexander Few, Darren Boyd, Dana Turse
Publikováno v:
2018 AIAA SPACE and Astronautics Forum and Exposition.
A low-cost reconnaissance mission concept has been devised of Earth’s ‘New Moon’, the recently discovered Earth orbital companion asteroid 2016HO3. 2016HO3 provides a compelling destination to address science, economic, and asteroid protection
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::88ef073466c7a8774247e9b9bca8c884
https://doi.org/10.2514/6.2018-5107
https://doi.org/10.2514/6.2018-5107
Publikováno v:
IEEE Antennas and Wireless Propagation Letters. 14:386-389
A discontinuous Galerkin finite-element time-domain (DGFETD) port formulation of the coupled Maxwell’s equations and Drift-Diffusion equations for a photoconductive antenna is derived. The formulation is cast in a form such that static quantities a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b362a79802f44fe6d0bbbb04d43a5c28
https://doi.org/10.1109/lawp.2014.2364524
https://doi.org/10.1109/lawp.2014.2364524
Publikováno v:
WiSEE
Reliability is the critical challenge of wireless sensing in space systems operating in extreme environments. Energy efficiency is another concern for battery powered wireless sensors. Considering the physics of wireless communications, we propose an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::093e6bdf69e94c3b0b4c320b2af1d7b3
https://doi.org/10.1109/wisee.2017.8124911
https://doi.org/10.1109/wisee.2017.8124911
Autor:
Tiffany Lockett, John A. Carr, Les Johnson, Armando Martinez, Leo Fabisinski, Todd Schneider, Darren Boyd, Brandon Farmer, Michael P. SanSoucie, Greg Laue
Publikováno v:
2015 IEEE 42nd Photovoltaic Specialist Conference (PVSC).
This paper describes recent advancements of the Lightweight Integrated Solar Array and Transceiver (LISA-T) currently being developed at NASA's Marshall Space Flight Center. The LISA-T array comprises a launch stowed, orbit deployed structure on whic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5c047c09f21f28af35a2c87542de2cb8
https://doi.org/10.1109/pvsc.2015.7355943
https://doi.org/10.1109/pvsc.2015.7355943
Publikováno v:
Proceedings of the 2012 IEEE International Symposium on Antennas and Propagation.
A photoconductive dipole antenna is analyzed using the Discontinuous-Galerkin Finite-Element Time-Domain method. An approximate model for the antenna is discussed. The excitation is approximated as the induced photocurrent in the dipole gap, and the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::59465162801ad1cd25867117266db4e2
https://doi.org/10.1109/aps.2012.6349133
https://doi.org/10.1109/aps.2012.6349133
Autor:
Darren Boyd Halford
This paper examines potential civil-military implications for U.S. Air Force security cooperation activities in building partnership capacity with airborne intelligence, surveillance, and reconnaissance (ISR) capabilities. Specifically, this paper ex
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::58fcf7fa4339f5a1eead5e019acfbf42
https://doi.org/10.21236/ada561553
https://doi.org/10.21236/ada561553
