This invention proposes a test apparatus and method for measuring the
damper load of an aircraft APU intake
system, belonging to the field of
aerodynamics technology. The aim is to solve the problem that existing technologies cannot provide comprehensive and reliable
test data, thus failing to meet the
engineering requirements for precise design and optimization of APU intake systems. In this invention, a vacuum tank, an external ejector
pipe, a flow meter, and an internal ejector
pipe are connected sequentially. A large plate is installed on one side of the wind tunnel test section, and the
damper frame is installed in the mounting opening of the large plate and connected to one end of the air collection chamber
pipe. The intake
damper is hinged to the damper frame via an intake damper pivot, and the other end of the air collection chamber is connected to the internal ejector pipe. A rod-type balance is installed on the intake damper and the large plate, and a balance line is installed on the rod-type balance, which is connected to a dynamic measurement
system. This invention solves the problem that existing technologies cannot provide comprehensive and reliable
test data, thus failing to meet the
engineering requirements for precise design and optimization of APU intake systems.