Search results for: Zhehan Xu
article
physica status solidi (a) > 218 > 3 > n/a - n/a
Direct heteroepitaxy and selective area growth (SAG) of GaP and GaAs on Si(100) and Si(111) are implemented by low‐pressure hydride vapor phase epitaxy (LP‐HVPE), which are facilitated by buffer layers grown at 410–490 °C with reactive gas mixing directly above Si substrates. High‐density islands observed on GaP buffer layers on Si result in rough morphology and defect formation in the subsequent...
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Maintenance support evaluation models based on Prognostics and Health Management (PHM) are studied for the status quo of PHM application in new aviation equipment. At first, the qualitative influences of PHM two capabilities on maintenance support are analyzed, and the attributes and critical impacts of PHM are quantitatively modeled. Moreover, evaluation modeling is studied. Collecting availability...
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Instantaneous availability models of Unmanned Reconnaissance Aircraft Systems (URAS) basic combat unit (BCU) are studied based on reconnaissance operation missions. The configuration and typical reconnaissance mission of URAS BCU are analyzed at first. Mission demand functions are established using Fourier series expansion, which makes discrete mission demands be transformed to continuous'. Moreover,...
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As a Large and technically complex system, there are high reliability, real-time requirements in C4ISR. In order to improve combat capability and implement the interoperability and rapid variety of business and technology, Open Architecture was adopted in C4ISR system and decomposed to functional architecture and technical architecture. In this paper, an architecture-oriented method of Prognostics...
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Space environmental simulator (SES) is complicated space experimental equipment. Based on the SES's special system configurations and possibly failure modes, this paper focuses on the research of the specific FMECA and RCMA method which analyzes the reliability issue. This proposed method provides an effectively technical support for the SES's reliability improvement.
