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Добірка наукової літератури з теми "Space mechanism in-flight testing"

Автор: Grafiati

Опубліковано: 11 березня 2023

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Статті в журналах з теми "Space mechanism in-flight testing"

1

Taylor, Gerald R., and Robert P. Janney. "In vivo testing confirms a blunting of the human cell-mediated immune mechanism during space flight." Journal of Leukocyte Biology 51, no. 2 (1992): 129–32. http://dx.doi.org/10.1002/jlb.51.2.129.

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2

Huber, F. W., P. D. Johnson, O. P. Sharma, J. B. Staubach, and S. W. Gaddis. "Performance Improvement Through Indexing of Turbine Airfoils: Part 1—Experimental Investigation." Journal of Turbomachinery 118, no. 4 (1996): 630–35. http://dx.doi.org/10.1115/1.2840918.

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This paper describes the results of a study to determine the performance improvements achievable by circumferentially indexing successive rows of turbine stator airfoils. An experimental/analytical investigation has been completed that indicates significant stage efficiency increases can be attained through application of this airfoil clocking concept. A series of tests was conducted at the National Aeronautics and Space Administration’s (NASA) Marshall Space Flight Center (MSFC) to experimentally investigate stator wake clocking effects on the performance of the Space Shuttle Main Engine Alte

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3

Z˙bikowski, Rafał, Cezary Galin´ski, and Christopher B. Pedersen. "Four-Bar Linkage Mechanism for Insectlike Flapping Wings in Hover: Concept and an Outline of Its Realization." Journal of Mechanical Design 127, no. 4 (2005): 817–24. http://dx.doi.org/10.1115/1.1829091.

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This paper describes the concept of a four-bar linkage mechanism for flapping wing micro air vehicles and outlines its design, implementation, and testing. Micro air vehicles (MAVs) are defined as flying vehicles ca. 150 mm in size (handheld), weighing 50–100 g, and are developed to reconnoiter in confined spaces (inside buildings, tunnels, etc.). For this application, insectlike flapping wings are an attractive solution and, hence, the need to realize the functionality of insect flight by engineering means. Insects fly by oscillating (plunging) and rotating (pitching) their wings through larg

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4

Merriam, E. G., J. E. Jones, S. P. Magleby, and L. L. Howell. "Monolithic 2 DOF fully compliant space pointing mechanism." Mechanical Sciences 4, no. 2 (2013): 381–90. http://dx.doi.org/10.5194/ms-4-381-2013.

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Abstract. This paper describes the conception, modeling, and development of a fully compliant two-degree-of-freedom pointing mechanism for application in spacecraft thruster, antenna, or solar array systems. The design objectives and the advantages of a compliant solution are briefly discussed. Detailed design decisions to meet project objectives are described. Analytical and numerical models are developed and subsequently verified by prototype testing and measurements in several iterations. A final design of the 3-D printed titanium monolithic pointing mechanism is described in detail and its

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5

ZHAO Hai-bo, 赵海波, 赵伟国 ZHAO Wei-guo, 董吉洪 DONG Ji-hong, et al. "Accuracy analysis and testing for secondary mirror adjusting mechanism in large space telescope." Optics and Precision Engineering 27, no. 11 (2019): 2374–83. http://dx.doi.org/10.3788/ope.20192711.2374.

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6

Michaels, Dan, and Alon Gany. "Modeling and testing of a tube-in-tube separation mechanism of bodies in space." Acta Astronautica 129 (December 2016): 214–22. http://dx.doi.org/10.1016/j.actaastro.2016.09.013.

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7

Wang, Junwei, Lei Zhang, Guohua Li, et al. "Research and Verification of Key Techniques in the Simulation of Space Extremely Rapid Decompression in Millisecond." International Journal of Aerospace Engineering 2021 (April 5, 2021): 1–11. http://dx.doi.org/10.1155/2021/6634468.

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Анотація:

The research of rapid decompression with its effect assessment and protection technology is the problem that must be faced by the future exploration projects such as near space exploration, deep space exploration, and long-term lunar or Mars base. A new reusable quick opening mechanism which can be opened in millisecond is designed to meet the testing requirement of ground simulator for extremely rapid decompression, and the testing results show that the quick opening mechanism can be opened within 0.1 s. The mathematical formulation is also developed, and the comparisons with the results from

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8

Hymer, W. C., R. E. Grindeland, T. Salada, P. Nye, E. J. Grossman, and P. K. Lane. "Experimental modification of rat pituitary growth hormone cell function during and after spaceflight." Journal of Applied Physiology 80, no. 3 (1996): 955–70. http://dx.doi.org/10.1152/jappl.1996.80.3.955.

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Space-flown rats show a number of flight-induced changes in the structure and function of pituitary growth hormone (GH) cells after in vitro postflight testing (W. C. Hymen, R. E. Grindeland, I. Krasnov, I, Victorov, K. Motter, P. Mukherjee, K. Shellenberger, and M. Vasques. J. Appl. Physiol. 73, Suppl.: 151S-157S, 1992). To evaluate the possible effects of microgravity on growth hormone (GH) cells themselves, freshly dispersed rat anterior pituitary gland cells were seeded into vials containing serum +/- microM hydrocortisone (HC) before flight. Five different cell preparations were used: the

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9

Konovalov, A. M., and V. I. Kugushev. "Mechanism of excitatioon of natural vibrations of fireclay products and its application in flaw detection." NOVYE OGNEUPORY (NEW REFRACTORIES), no. 10 (November 25, 2022): 55–62. http://dx.doi.org/10.17073/1683-4518-2022-10-55-62.

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Анотація:

In this article, using the example of developing a technique for non-destructive testing of a fireclay product («asterisks») using the natural vibrations of the object of control, a mathematical model is presented that allows us to specifically describe the process of converting an external dynamic effect into the natural vibrations of the part. The peculiarity of the model is that, firstly, it is a carrier of the free energy of elastic deformation and the process of natural oscillations is formed in it. Secondly, the model is a Riemannian space in which all dynamic parameters are constant and

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10

Zhou, Hongming, Peiyuan Li, Longfei Wu, and Qiankun Gao. "A wavelet analysis-based matching pursuit algorithm for an accurate ultrasonic TOFD measurement." Insight - Non-Destructive Testing and Condition Monitoring 62, no. 11 (2020): 662–68. http://dx.doi.org/10.1784/insi.2020.62.11.662.

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The time-of-flight diffraction (TOFD) technique is used as an important non-destructive testing method in weld integrity evaluation and failure analysis. However, an accurate measurement of the time-of-flight (TOF) has proven to be difficult due to the low time resolution of the measured signal. Conventional deconvolution techniques have been used to improve the time resolution of the signal but are not effective for ultrasonic TOFD signals because the frequency contents of the signals are non-static in space-frequency distribution. To overcome this problem, a method is proposed in this paper

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