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Development of a micro turboprop to extend altitude capabilities of small UAVs

机译:开发微型涡轮螺旋桨飞机以扩展小型无人机的高度能力

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At the moment there are no relatively small unmanned aircraft for flights above 15000 ft, due to the lack of an appropriate propulsion system. If a reasonable thermal efficiency can be attained, small turboprop engines could fill this gap. A careful design and optimization of components is however a must to counteract the drop in efficiency encountered when reducing the size of gas turbines. The current paper describes results from reverse engineering of the KJ66 micro gas turbine. It is shown that the efficiencies of each of the components can be improved by several percent by minor modifications, which results in a considerable reduction in fuel consumption. An improved combustion chamber design proves to be of primary importance to obtain a reasonable fuel consumption at high altitude.
机译:由于缺乏适当的推进系统,目前没有相对较小的无人驾驶飞机用于15000英尺以上的飞行。如果可以获得合理的热效率,那么小型涡轮螺旋桨发动机可以填补这一空白。然而,必须采取认真的设计和优化的组件来抵消减小燃气轮机尺寸时效率下降的问题。本文介绍了KJ66微型燃气轮机的逆向工程结果。结果表明,通过较小的改动,每个组件的效率都可以提高百分之几,从而大大降低了燃油消耗。事实证明,改进的燃烧室设计对于在高海拔地区获得合理的燃油消耗至关重要。

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