通过模型旋翼试验得到了合理的直升机涡环边界判据,并由此计算得到了直升机通用涡环状态边界.为验证该边界,进行了试飞验证工作,并得到了一些新的结论.综合试验研究、理论研究和试飞结果,提出了直升机下降飞行的"两线三区"的概念,使直升机涡环边界图更加合理,更为实用.%A reasonable criterion of vortex-ring state boundary for helicopter is acquired based on model rotor tests. According to this criterion a non-dimensional vortex-ring state boundary is presented for general application. To validate the boundary, flight tests are carried out and some new conclusions are drawn. Combined theoretical and experimental research with the flight test results, the concept of two curves ＆ three regions is brought out, which makes the chart of vortex-ring boundary more reasonable and practical.
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机译：通过模型旋翼试验得到了合理的直升机涡环边界判据,并由此计算得到了直升机通用涡环状态边界.为验证该边界,进行了试飞验证工作,并得到了一些新的结论.综合试验研究、理论研究和试飞结果,提出了直升机下降飞行的"两线三区"的概念,使直升机涡环边界图更加合理,更为实用.%A reasonable criterion of vortex-ring state boundary for helicopter is acquired based on model rotor tests. According to this criterion a non-dimensional vortex-ring state boundary is presented for general application. To validate the boundary, flight tests are carried out and some new conclusions are drawn. Combined theoretical and experimental research with the flight test results, the concept of two curves ＆ three regions is brought out, which makes the chart of vortex-ring boundary more reasonable and practical.
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