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                                                  教育科技
                                                  淺談渦槳發動機中的螺旋槳
                                                  2018/6/28 21:33:27  轉載自: 互聯網  
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                                                  1.在渦槳發動機中,渦輪帶動壓氣機和螺旋槳。2/3渦輪功轉動壓氣機,1/3轉動螺旋槳和附件。拉力大部分由螺旋槳產生,10-15%由噴氣產生。
                                                  2.三種渦槳發動機:單轉子、雙轉子、兩個渦輪分別帶動壓氣機和螺旋槳。
                                                  3.三個影響槳葉迎角的因素:槳葉角、飛行速度、螺旋槳轉速。隨槳葉角大而大,隨轉速大而大,雖飛行速度大而小。
                                                  4.變大距增大槳葉角,變小距減小槳葉角。槳葉角沿半徑由葉根到葉尖逐漸減小。
                                                  5.螺旋槳效率取決于:幾何尺寸、形狀和槳葉迎角。
                                                  6.渦槳調速器分類:電動式調速器、液壓式調速器(正向-變小距、反向-變大距、雙向)。
                                                  7.螺旋槳的檢查:目視檢查、螺旋槳軌跡檢查、槳葉角的檢查調整、調速器的調節。

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