Simulation of microstrip radio altimeter antenna for aircraft

The purpose of the article is to carry out mathematical modeling of the main characteristics and parameters of a microstrip antenna, the dielectric substrate of which is created from a domestic ceramic sample and to substantiate the use of a microstrip antenna as a transmitting and receiving antenna in a radio altimeter. It is shown that a microstrip antenna on a ceramic material substrate with a relative permittivity ε = 9.6 and a thickness of 0.2 mm has good electrical parameters in the frequency range of 31.5–33.5 GHz. Including the width of the antenna radiation pattern at the level of –3 dB is 12.5 degrees in the horizontal plane and 26.7 degrees in the vertical plane. In this case, the antenna gain is 17 dB and the level of the first side lobe is –20 dB relative to the main antenna lobe. Also the practical application of microstrip array antennas inphase as a transmitting and receiving antenna for a radio altimeter installed on aircraft is described in the article. The range of the altimeter reaches 300 m.

Analysis of energy saving in domestic ceramic industry kilns

Ceramic industrial kiln refers to the combustion equipment for ceramic production, which generally refers to roller kiln, shuttle tunnel kiln and shuttle kiln. Roller kiln refers to the kiln with continuous firing and rotating roller as the vehicle of the billet body; Tunnel kiln refers to the kiln which adopts continuous firing and takes rail kiln car as the transport vehicle of billet body. Shuttle kiln refers to the kiln which is fired intermittently and consists of kiln car, kiln chamber and kiln door. Factors influencing energy saving of kiln include construction materials, kiln structure, combustion technology, thermal insulation performance and automation control.

The Desolation of Nihility: Aesthetic Analysis of Japanese Domestic Ceramics from the Perspective of Japanese Zen Culture

The culture of Zen comes into two diverse paths in China and Japan. Compared to China, the Japanese Zen culture has characteristics of natural, plain, sensitive, vanity and silence. It is unrestrained with feeble and desolation. And these characteristics are presented in Japanese domestic ceramic in the unique beauty of its domestic ceramic.

Possibility of obtaining high-alumina materials from industrial wastes of ceramic and refractory industry (Review)

The issues of obtaining aluminum oxide from man-made materials, the issues of differences in the structure, composition and properties of alumina obtained by different technological methods and the issues of providing high-alumina materials to the domestic ceramic, electronic and refractory industries are reviewed.

Comparison Study of Multi-Layer and Folding Liners of Corrugated Cartons - Domestic Ceramic Packaging

Corrugated board is a kind of important material for packaging liner. According to packages of ceramic wine suits and single ceramic bowl, we designed folding liners and multi-layer liners using corrugated boards. Experiments are taken out to compare mechanical properties of different liner structures. Best corrugated liner forms are summarized considering amount of corrugated boards, mechanical properties, convenience in manufacturing, and convenience in using.

Research on the Automatic Sorting System of Domestic Ceramic Products Based on Machine Visual Inspection

This article will use visual inspection techniques into the two-dimensional geometry measurement of ceramic products .It uses MATLAB 7.0 as image processing software, and the designing uses the gradient information into detection circular edge by Hough transformation method. The method is helpful to improve the production efficiency and the recognition rate. We can prove that this method has the feasibility by experiments, and achieve a satisfactory result .