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记者:请您介绍一下罗克韦尔·柯林斯公司在ARJ21-700项目中的参与情况。
丹尼·海格森:作为ARJ21-700项目的19家供应商之一,我们负责为ARJ21-700飞机提供一整套的航电设备,其中涵盖了通信、导航、飞控以及监视各个子系统。 相似文献
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Kenneth E.Gazzola Former Executive VP 《国际航空》2007,(9):56-57
20 years ago, in September 1987, an adventure began which was unique in aviation/aerospace publishing. That adventure led to a multimedia partnership which has grown stronger every year since 1987 and developed into a lasting friendship and global business alliance that continues today. 相似文献
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Savina VP Mikos KN Ryzhkova VE Gorshunova AI Nefyodov YG Lepsky AA Aksyonov VV 《Acta Astronautica》1979,6(10):1251-1254
The Soyuz 22 space cabin atmosphere was studied for volatile organic trace contaminants. By gas chromatography the following constituents were identified: methane, ethane, heptane, methanol, ethanol, n-propanol, acetaldehyde, acetone, ethyl benzene. Except for acetone, concentrations of the above compounds were close to the values determined in the mock-up experiments. 相似文献
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A. J. Westphal A. M. Davis J. Levine M. J. Pellin M. R. Savina 《Space Science Reviews》2007,130(1-4):451-456
Galactic cosmic rays probably predominantly originate from shock-accelerated gas and dust in superbubbles. It is usually assumed
that the shock-accelerated dust is quickly destroyed by sputtering. However, it may be that some of the dust can survive bombardment
by the high-metallicity gas in the superbubble interior, and that some of that dust has been incorporated into solar system
materials. Interplanetary dust particles (IDPs) contain enigmatic submicron components called GEMS (Glass with Embedded Metal
and Sulfides). These GEMS have properties that closely match those expected of a population of surviving shock-accelerated
dust at the GCR source (Westphal and Bradley in Astrophys. J. 617:1131, 2004). In order to test the hypothesis that GEMS are synthesized from shock-accelerated dust in superbubbles, we plan to measure
the relative abundances of Fe, Zr, and Mo isotopes in GEMS using the new Resonance Ionization Mass Spectrometer at Argonne
National Laboratory. If GEMS are synthesized from shock-accelerated dust in superbubbles, they should exhibit isotopic anomalies
in Fe, Zr and Mo: specificially, enhancements in the r-only isotopes 96Zr and 100Mo, and separately in 58Fe, should be observed. We review also recent developments in observations of GEMS, laboratory synthesis of GEMS-like materials,
and implications of observations of GEMS-like materials in Stardust samples. 相似文献
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Cosmic Research - Features of the implementation of a beam-pulse amplifier (BPA) of whistler waves in magnetospheriс enhanced and depleted ducts with refraction reflection are considered.... 相似文献
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In this paper, the radial diffusion of energetic electrons in the Jovian radiation belts is considered. It is noted that the influence of global resonance in the electron radiation belts on the ring current provides original electrical pulses in the middle magnetosphere. The values of the random transfer of energetic electrons across the magnetic shells, which are associated with electrical pulses, are determined. An expression for radial diffusion is obtained. The functional form and radial diffusion coefficient are compared with those known from Jovian magnetosphere experimental data. 相似文献
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