External customers for dynamic pressure measurements include universities and industry aircraft manufacturers such as the Boeing Company. Particularly, those customers seeking or currently designing next generation, civilian or defense supersonic aircraft have an identical unmet measurement need as NASA Langley. Furthermore, in-flight flow-control (a rapidly growing area of research and development) requires compact accurate measurements of key fluid dynamic parameters such as wall shear stress and dynamic wall pressure. This is a potentially larger volume market with relatively high ASP but will require more development time to meet the tighter space constraints, tougher operating conditions and unique target specifications that such an application entails.
The proposed instrumentation technology has the potential to be transportable across multiple NASA facility classes as well as implemented across government-owned, industry and academic institution test facilities. The target market is the research-grade instrumentation and measurement shear stress sensors market for the aerospace research and development industry. The target application for entry into NASA Aeronautics Test Program is as ground test wind-tunnel instrumentation for turbulent skin friction measurements and separation detection and control. cross-flow boundary layer transition measurements for swept wing models, such as is performed at NASA Langley. These measurements are critical to the proper design of swept wing geometry for the next generation of civilian supersonic aircraft. The design and operating conditions of these aircraft expose the vehicle to cross-flow instabilities that complicate the prediction and control of laminar flow and transition to turbulence. Accurate measurement of these cross-flow instability modes is not currently possible with existing technologies due to limited spatial resolution and sensor spacing constraints. Our proposed technology surmounts the constraints of existing technologies, enabling the required sensor spacing and resolution, thereby directly addressing the previously unmet need.