Design And Implementation Of A Portable Aircraft Engine Detector

Civil aircraft is getting more and more widely used in our country, and a major difference between aircraft and spacecraft is: the spacecraft engines use only once and do not need maintenance and repair, while the aircraft engines use more than once and therefore need maintenance and repair. Normal operation of the aircraft engine is relevant to the safety of aircrafts and the passengers. Regular examination of aircraft engine is the essential means to ensure the flight safety. Usually, the daily maintenance of aircraft engines is conducted using specialized electrical testing equipment at maintenance hangar. Because planes taking off and landing are frequent, it is very inconvenient to move planes to the hangar. Therefore, it is important to develop a portable testing equipment, which can do the main performance of the aircraft engine testing on the tarmac, reducing the time and cost, also achieving the purpose of ensuring the safety of aircrafts. In this paper, to meet with this requirement, we developed a "portable airplane engine testing system" product prototype, and the main work is described as follows:1. A comprehensive analysis has been conducted on the system demand, especially the determination of the size and structure of the system components which satisfying portable requirements. To distinguish from existing fixed aircraft engine detecting equipment, the system only focuses on the realization of main functions.2. An overall design of the system have been carried out. The system is divided into two part: the upper part use laptops and LABVIEW for software programming, and the detector part is based on independent research and development. These two parts are connected using network cables to realize commands and data transmission;3. The key task of this paper is development of embedded software in the detector,and the embedded hardware system design and the LabVIEW application software design. The main work of embedded software design and implementation includes:(1)the overall architecture of the embedded software design,(2) the definition and description of each function module(3) the design of the flow chart of module functions,(4) program coding based on the flow chart and realize the functions,(5) the program debugging and testing, and the system alignment.In the design of portable aircraft engine detecting system, the development of thedetector has met the system requirements on its function, performance and structure.After the system alignment, the portable detector can realize the main functions and performance of the system.