Space systems. General test requirements for launch vehicles

2020 ◽  
Keyword(s):  
Launch Vehicles ◽  
Space Systems ◽  
General Test ◽  
Test Requirements

Space systems. General test documentation

2011 ◽  
Keyword(s):  
Space Systems ◽  
General Test

scholarly journals Calculated estimation of electromagnetic compatibility of radio-electronic means of space systems and complexes

2021 ◽  
Vol 24 (2) ◽  
pp. 49-54
Author(s):  
Yevgeny E. Krivobokov
Keyword(s):  
Electromagnetic Compatibility ◽  
Mutual Influence ◽  
Integrated Approach ◽  
Design Stage ◽  
Launch Vehicles ◽  
Space Systems ◽  
Space Technology ◽  
Radio Electronic ◽  
Analytical Assessment ◽  
Technical Measures

This article presents the methods of complex computational and analytical assessment of ensuring electromagnetic compatibility of technical means (electrical, electronic and radio-electronic means of launch vehicles and spacecraft). These methods allow us to conduct a comprehensive computational and analytical assessment of the electromagnetic compatibility of the technical means of rocket and space technology, which in its essence allows us to assess the mutual influence of the technical means of rocket and space technology already at the design stage of rocket and space technology objects. The analysis of the results of the assessment of the electromagnetic compatibility of the technical means of rocket and space technology allows us to develop organizational and technical measures aimed at ensuring the electromagnetic compatibility of the technical means of rocket and space technology at all stages of the life cycle of objects of rocket and space technology. To assess the electromagnetic compatibility of the technical means of rocket and space technology, an integrated approach was chosen due to the large dimension of the initial data and the variety of possible variants of interference penetration.

scholarly journals Experimental investigation on pump efficiency and cavitation performance of Huang-jin-xia hydro-junction

2021 ◽  
Vol 293 ◽  
pp. 02050
Author(s):  
Shaojiang Luo ◽  
Tao Dong ◽  
Yong Mou ◽  
Chenhao Li
Keyword(s):  
Centrifugal Pump ◽  
Weighted Average ◽  
Water Diversion ◽  
Pump Efficiency ◽  
Cavitation Performance ◽  
General Test ◽  
Weihe River ◽  
Design Requirements ◽  
Optimal Efficiency ◽  
Test Requirements

In this paper, the performance of A1515 centrifugal pump was studied on a high parameters and precision large general test platform in combination with the Huang-jin-xia hydro-junction in Hanjiang-to-Weihe River valley water diversion project. The efficiency characteristics and cavitation performance of the pump were tested and measured respectively. All measured parameters were collected and recorded through the acquisition system. The experimental results show that the optimal efficiency and weighted average efficiency of the pump is 92.46% and 92.18%, and the design point efficiency is 92.39%, all of which meet the design requirements. After conversion to the prototype pump, the efficiency value at each working point is higher than the guaranteed value. The pump hump margin is 3.03%, which is greater than 2% of the required value and meets the requirements. In the whole normal operating range, the cavitation performance of the model pump meets the design and test requirements. The comprehensive error of model test is less than ±0.2%. The research results provide reference for the design of large centrifugal pump.

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