To investigate the aerodynamic performance effects of front guide blade to test cascade, low speed wind tunnel experiments were carried out on the two LGV cascades with and without front guide blade.

• 摘要为了考察导向叶片对实验涡轮导向器气动性能及涡系结构的影响，采用在实验叶栅前放置前置导叶的方法分别对原型和改型两种涡轮低压导向器进行了低速风洞实验。