Results 1 to 10 of about 34,814 (161)

Reactant Jetting in Unstable Detonation [PDF]

, 2009
We note the common existence of a supersonic jet structure locally embedded within a surrounding transonic flow field in the hitherto unrelated phenomena of unstable gaseous detonation and hypervelocity blunt body shock wave interaction. Extending prior
Austin J.M., Edney B.E., Edney B.E., Hornung H.G., Hornung H.G., Konnov A., Oppenheim A., Subbotin V., Urtiew P.   +8 more
core   +1 more source

Theoretical analysis of perching and hovering maneuvers [PDF]

, 2013
Unsteady aerodynamic phenomena are encountered in a large number of modern aerospace and non-aerospace applications. Leading edge vortices (LEVs) are of particular interest because of their large impact on the forces and performance.
Beddoes, Clements R., Dickinson M., Ellington C., Garrick I., Granlund K., Greenberg J. M., Hemati M. S., Katz J., Leishman J. G., Ramesh K., Ramesh K., Ramesh K., Theodorsen T., Viieru J. T. D., von Kármán T.   +15 more
core   +1 more source

Mirror formation control in the vicinity of an asteroid [PDF]

, 2008
Two strategies are presented for the positioning and control of a spacecraft formation designed to focus sunlight onto a point on the surface of asteroid, thereby sublimating the material and ejecting debris creating thrust.
Battin R. H., Hu W., Kahle R., Lunan D., Maddock C., Melosh H. J., Near Earth Object Program, Rossi A., SanchezCuartielles J.P., Schaub H., Strang G., Vasile M.   +11 more
core   +2 more sources

Application of bifurcation methods for the prediction of low-speed aircraft ground performance [PDF]

, 2009
The design of aircraft for ground maneuvers is an essential part in satisfying the demanding requirements of the aircraft operators. Extensive analysis is done to ensure that a new civil aircraft type will adhere to these requirements, for which the ...
Bernd Krauskopf, Blundell M., Chai S., Currey N., Etienne Coetzee, Kuznetsov Y., Mark Lowenberg, Mitchell D., Rankin J., Strogatz S., Thota P., Wells A., Wong J.   +12 more
core   +3 more sources

Identifying key parameters to design sustainable projects in the field of aeronautics, in France

Environmental and Sustainability Indicators
Due to social, environmental and technical evolutions, we need to change the way we design and manage systems. Traditional project management practices must evolve to incorporate new sustainability objectives.
Alexis Lalevée, Anne-Laure Capomaccio, Claudine Gillot   +2 more
doaj   +1 more source

Multimodal fusion model for diagnosing mild cognitive impairment in unilateral middle cerebral artery steno-occlusive disease

Frontiers in Aging Neuroscience
ObjectivesTo propose a multimodal functional brain network (FBN) and structural brain network (SBN) topological feature fusion technique based on resting-state functional magnetic resonance imaging (rs-fMRI), diffusion tensor imaging (DTI), 3D-T1 ...
Ziyi Yuan, Zhaodi Huang, Chaojun Li, Shengrong Li, Qingguo Ren, Xiaona Xia, Qingjun Jiang, Daoqiang Zhang, Qi Zhu, Xiangshui Meng, Xiangshui Meng   +10 more
doaj   +1 more source

Remote Sensing Identification Method of Cultivated Land at Hill County of Sichuan Basin Based on Deep Learning

智慧农业
ObjectiveTo fully utilize and protect farmland and lay a solid foundation for the sustainable use of land, it is particularly important to obtain real-time and precise information regarding farmland area, distribution, and other factors.
LI Hao, DU Yuqiu, XIAO Xingzhu, CHEN Yanxi   +3 more
doaj   +1 more source

Remote platform power conserving system [PDF]

, 1974
A system is described where an unattended receiver and transmitter equipped data collection platform is interrogated by a substantially polar orbiting satellite.
Kurvin, C. W.
core   +1 more source

Activities in Sunspot Group NOAA 9393 [PDF]

, 2008
Watukosek Aeronautics and Space Observing Site (WKSO, LAPAN), observed sunspot in daily basis since 1987 using a sketch method. Sunspot group NOAA 9393 (or WKSO 0123) have been observed in March to early of April 2001.
Bachtiar, Anwar, Bambang, Setiahadi
core  

Lightning tracking system [PDF]

, 1973
A system is described for locating lightning strikes by developing the coordinates of a pair of lines, each of which is produced at a reference sensing station.
Jones, J. H., Wojtasinski, R. J.
core   +1 more source