Results 1 to 10 of about 34,499 (138)
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. +8 more
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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. +11 more
core +2 more sources
Experimental Flow Investigation of a Truncated Ideal Contour Nozzle [PDF]
, 2006 Various tests showed a significant side load peak for low nozzle pressure ratios during engine start-up and shut down phase. DLR Lampoldshausen carried out tests to examine the flow field in a truncated ideal contour nozzle for low NPR.
Stark, Ralf, Wagner, Bernd
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Frontiers in Aging NeuroscienceObjectivesTo 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 +10 more
doaj +1 more source
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 +3 more
doaj +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 +15 more
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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
System and method for character recognition [PDF]
, 1974 A character recognition system is disclosed in which each character in a retina, defining a scanning raster, is scanned with random lines uniformly distributed over the retina.
Hong, J. P.
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On Reflection of Shock Waves from Boundary Layers [PDF]
, 1952 Measurements of the reflection characteristics of shock waves from a flat surface with a laminar and turbulent boundary layer are presented. The investigations were carried out at Mach numbers from about 1.3 to 1.5 and a Reynolds number of 0.9 x 10^4.
Dhawan, S., Liepmann, H. W., Roshko, A.
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Determining particle density using known material Hugeniot curves [PDF]
, 1974 A method is detailed to determine the density of particles wherein the closing velocity is known between the impacting particles and a plate of known material.
Dibattista, J. D.
core +1 more source