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THEORETICAL amp; EXPERIMENTAL THERMAL ANALYSIS OF HEAT INSULATING MATERIAL TO PREVENT HIGH HEAT TRANSFER TO RUBBER FUEL TANKS TO AVOID THEIR FAILURE ON A FIGHTER AIRCRAFT.
THEORETICAL amp; EXPERIMENTAL THERMAL ANALYSIS OF HEAT INSULATING MATERIAL TO PREVENT HIGH HEAT TRANSFER TO RUBBER FUEL TANKS TO AVOID THEIR FAILURE ON A FIGHTER AIRCRAFT.
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机译：绝热材料对橡胶燃料罐的高热传递以防止其损坏的理论和实验热分析，以防止其损坏。
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摘要
The repeated failures of rubber fuel tank are observed on aircraft. The necessity was felt to find out the root cause of failure and suggest remedial measures to arrest failures. The failures of rubber fuel tank were studied in depth. It was found that failures are because of hardening of tank rubber due to high temperature in this zone. Convective heat transfer by heated engine is identified as source of heat. Initially, the heat transfer calculation was performed based on heated air at a temperature of 200 °C is present at nacelle area. In practical scenario, it is difficult to create the effect of ram air flow for convective heat transfer. Hence, to match practical experimental analysis, theoretical calculations have been refined and subsequently results of both the analysis are compared to get the fair idea of accuracy of results. Theoretical analysis has been conducted in seven configurations to compare the results & arrive to optimum configuration. Based on study, it has been concluded that if we glue glass wool of 5 mm thickness in between existing heat insulation cloth (2 layers) and single layer of same heat insulation cloth as per Configuration 6 then interface temperature 60.81 °C between heat insulation cloth & rubber tank can be maintained which is lesser than the deterioration temperature of rubber fuel tank (203 b) i.e 100 deg C to avoid the failure of rubber fuel tank.
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