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This paper establishes an evaluation system of aviation equipment affordability at four levels: the target level, the criterion level, the integrated parameter level and the basic parameter level. It decomposes the final target into several elementary parameters which can be estimated. Analyzing the importance of each level index by using the analytic hierarchy process, and calculating the weight...
Single image dehazing based on dark channel prior may encounter color distortion in bright region (such as sky region). Three methods are proposed to overcome the limitations of original algorithm. A transmission threshold firstly was determined. Then, by using the threshold to correct the transmission map in different ways and make it adaptive to fog, three algorithms can effectively deal with the...
Aero-generator life prediction is an important problem to solve in aviation industry. This paper proposes a variable weight combination model, which is Based on MGM(1, n) model and LSSVM model, to predicts the life of aero-generator. By the use of special accelerating life test platform for a certain type of real aero-generator, test data of the input speed, fuel injection pressure, load, inlet oil...
The article lists features of Gasar metal porous filter materials and problems of sintered metal porous filter materials. A mathematical model was created on the basis of analysis of fluid resistance, used as the main evaluation index of permeability of porous materials. The formulas of fluid resistance in pores of porous materials were obtained and the advantage of fluid resistance of Gasar filter...
An obvious obstacle as we study the leakage of hydraulic servo-motor is how to measure the leakage dynamically as the motor works under super low speed tracking condition. Since the flow rate of leakage is too low to be measured by flow meter, the paper presents a scheme of external leakage measurement, by which instantaneous flow rate of external leakage can be measured automatically and dynamically...
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