Aircraft flight tests and reliability improvements of MEMS pressure sensor assembly

摘要

Many different sensor types are used in aircraft and aersopece applications in general. During the certification period of a comercial airliner, a loads survey is conducted to collect aerodynamic performance data by measuring the pressure on the surace of the wings. To do this, we developed a unique multi-MEMS pressure sensor system targeted for flight test applications. Here we describe test rsults collected from two aircraft flight tests using this thin profile `pressure belt' multi-sensor assembly. The overall measurement accuracy was close to our targeted 0.1 percent of full scale, which is10x better than the currently used technology. Lessons learned from these flight tests and approaches to further improve the pressure belt reliability are also discussed.