【摘要】 首先说明了发展直升机的难点，即相对于同量级的固定翼飞机来说，不仅需要马力更大的发动机，而且旋翼的技术问题更为复杂。其次，综述世界上直升机应用的现状及今后发展趋势，包括亚太地区的潜在市场，并分别用图线表示军用和民用直升机从１９９０年－１９９５年的实际年销售量及１９９６年－２０１０年的估计销售量。接着，介绍了美国２１世纪的军民两用直升机的经济、技术指标以及目前在空气动力学／动力学等方面的研究动态。最后，展望直升机的发展远景，提出直升机既是一种“万用”，又是一种“万岁”的交通运输工具的观点，并指出我国发展直升机在宣传中和技术方面应做的努力和兴旺的前途。更多还原

【Abstract】 Two difficulties of the helicopter development are described. At first, i.e. as compared to the same class of the fixed wing airplane, more powerful engine was/is needed and more complicated technical problem were/are encountered. Secondly, the situation and prospect of the world military and civil helicopter market are summarized and estimated. Thirdly, the U.S. helicopter economic and technical index beyond 2 000 year and the aerodynamic and the dynamic research trend are introduced. Finally, a viewpoint that the helicopter is a vehicle of thousand uses as well as thousand ages is put forward and efforts in the propaganda and technology aspect for developing helicopters in China are pointed out.更多还原