Abstract
During this research, the analytical and numerical oscillation models have been deduced of cooling grills of terminal devices for voice communication control systems used by air traffic controllers. The adequacy of obtained models was verified by a full-scale experiment. Vibration stability of telecommunication terminal cases has high importance for the high-quality reproduction of voice information. Obtained results make it possible to solve two problems at once – problem of reducing heat pressure and of increasing vibration stability of audio reproduction device cases.
Highlights
The low noise of the terminal devices is one of the important features of digital voice communication control systems (VCCS) [1] used for air traffic control
Terminal devices execute a significant amount of calculations, which is a cause of processor-intensive work state of the motherboard of the terminal, which leads to heat releases of approximate 100 W for each terminal
The whole case of the terminal functions as a cooler. Such a solution allows getting a larger area of a heatsink and more effective cooling of motherboard processor
Summary
The low noise of the terminal devices is one of the important features of digital voice communication control systems (VCCS) [1] used for air traffic control. That fact and a requirement for the low noise level doesn't allow using active devices (such as coolers, thermoelectric coolers, etc.) for cooling terminal processors. Passive cooling requires specific constructive features of the cases: 1) aluminum or copper coolers with a big heatsink area; 2) thermal interfaces between parts of the case; 3) thin-shell designs, sometimes constructed from perforated metal plates to create convectional heat exchange with the outside environment. RESEARCH ON THE OSCILLATION OF COOLING GRILLS USED FOR TERMINAL DEVICES FOR VOICE COMMUNICATION CONTROL SYSTEMS USED BY AIR TRAFFIC CONTROLLERS. The whole case of the terminal functions as a cooler Such a solution allows getting a larger area of a heatsink and more effective cooling of motherboard processor. The fact that natural frequencies mustn't be lower than 700 Hz should be taken into consideration when designing terminal devices
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