Abstract:
Propeller aircraft can shorten the takeoff and landing distance due to the slipstream on the wing generated by the propeller, thus the required length of the airport runway can be reduced. At present, propeller aircraft is still widely developed and used in civil and military aircraft. The independent design of aircraft propellers in China started much late, and large propellers in China have always used all-metal solid blades in the past. As a new generation of propeller, the "new propeller" is the first self-developed high-performance composite propeller. During the development process, a series of significant challenges were encountered in terms of aerodynamic design, structural strength, electrical control, etc.. The
Military Aircraft Structural Integrity Program (MASIP, GJB 775A-2012), as a top-level requirement for aircraft structural design, still plays an important role in the propeller structural design, and is an important means to ensure the reliability, economy, and product lifetime of the new propeller structures. The designers overcame many challenges while gradually learning and implementing the requirements of MASIP, and ultimately successfully developed and installed the new propeller. Starting from the five tasks of MASIP, this study introduces the implementation of various stages of tasks in the development of the new propeller, as well as relevant theoretical analysis and experimental verification carried out during this process. The practice and experience of MASIP in the propeller structural design is systematically summarized. It is hoped to provide a guidance for the design of similar products in the future.