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Laser welding in reduced gravity
ICALEO '90: Proceedings of the Laser Materials Processing Conference, 1990Preliminary results on the effects of reduced gravity on laser welding of stainless steel and other materials are reported. Laser welding experiments using a low power (10-18 watts) Nd-YAG laser have been performed on the NASA KC-135, which flies parabolic manuevers to simulate reduced gravity conditions.
Gary L. Workman, William F. Kaukler
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Rheological measurements in reduced gravity
AIP Conference Proceedings, 1999Rheology of fluidized beds and settling suspensions were studied experimentally in a series of reduced gravity parabolic flights aboard NASA’s KC‐135 aircraft. Silica sands of two different size distributions were fluidized by air. The slurries were made using silica sand and Glycerol solution.
Sayavur I. Bakhtiyarov, Ruel A. Overfelt
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Rheology of Suspensions in Reduced Gravity
Rheology and Fluid Mechanics of Nonlinear Materials, 1998Abstract Viscosity of settling suspensions was studied experimentally in a series of reduced gravity parabolic flights aboard NASA’s KC - 135 aircraft. Slurries were made using silica sand (0.150 mm < dp < 0.212 mm) and Glycerol solution. The experimental set up incorporated instrumentation to measure the apparent viscosity
Sayavur I. Bakhtiyarov, Ruel A. Overfelt
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Reduced gravity undergraduate student flight experiment - Liquid transfer in reduced gravity
36th AIAA Aerospace Sciences Meeting and Exhibit, 1998Undergraduate students in Mechanical and Aerospace Engineering at The University of Alabama in Huntsville designed, fabricated, and tested a reduced gravity flight experiment which flew on NASA's KC-135A aircraft during the Spring of 1997. This special course included scientific scholarship, hands-on test operations, interpretation of the results and ...
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Liquid Jet Breakup in Reduced Gravity [PDF]
Low Reynolds Number liquid jet break-up in a gravitational field occurs in one of threemodes; periodic dripping, chaotic dripping and jetting. These break-up modes have beenstudied extensively with a variety of theoretical, numerical and experimental techniques.The break-up modes of a liquid jet not influenced by a gravitational field has not ...
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Microchip Separations in Reduced-Gravity and Hypergravity Environments
Analytical Chemistry, 2005Microfabricated fluidics technology, e.g., lab-on-a-chip devices, offers many attractive features for performing chemistry and biochemistry on space-based platforms. We have constructed a portable, battery-operated microfluidic platform that was tested under reduced gravity and hypergravity conditions that would be experienced in space flight and ...
Christopher T, Culbertson +5 more
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Bubble flow in reduced gravity
AIP Conference Proceedings, 1998The combination of buoyancy and thermocapillarity can cause a flow that impedes or alters the motion of a bubble in reduced gravity. In analyzing such a flow, it is important to account for the dynamics occurring on the surface of the bubble. A first-order solution to the governing equations of motion and energy is presented for small Reynolds numbers.
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QUANTIZATION OF REDUCED CHERN–SIMONS GRAVITY WITH A SOURCE
International Journal of Modern Physics A, 2004Using the Dirac's theory of constraints, procedure of reduction of field degrees of freedom, whose number is restricted by equations of motion and topological conditions, is proposed. Such a procedure is applied in the case of space with the topology of a torus to the Chern–Simons gravity generalized by inclusion of a source.
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2014 IEEE International Conference on Robotics and Automation (ICRA), 2014
Wenwu Xiu, Kenneth Ruble, Ou Ma
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Wenwu Xiu, Kenneth Ruble, Ou Ma
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