为了解决航空飞行器发动机进气量的控制问题,提出一种结构简单、可靠性高的M数信号器。当飞行器进气道Ma达到某一设定值时,M数信号器提供信号给发动机进气道斜板调节系统。M数信号器选用机械膜盒作为敏感元件,根据Ma的测量原理求解得到Ma值,然后对M数信号器进行设计制造。经装机试飞验证,表明M数信号器可满足发动机进气道斜板自动调节的要求。 In order to solve the control problem of air vehicle engine intake, a M-number annunciator with simple structure and high reliability is proposed. When the aircraft inlet Ma reaches a certain set point, the M number annunciator provides signals to the engine intake ramp regulation system. M number of semaphores using mechanical diaphragm as a sensitive element, according to Ma’s measurement principle to obtain the value of Ma, and then M number of signal design and manufacture. Proved by the installed flight test, indicating that the M number annunciator can meet the requirements of the engine inlet swashplate automatically adjusted.