Aerospace systems have the disadvantage that a malfunction or a failure of single systems almost always leads to the failure of the entire system. That's why extensive tests and trials are indispensable. Mostly the "testing" takes place under extreme environmental conditions. You need sensors that work at high or low temperatures. You want to simulate different climatic conditions or high altitude? We are happy to give you advices.Further areas are:•Control systems, gyro systems, LIDAR that aimming at autonomous flying.•Navigation•Vibration monitoring of engine systems•Aerodynamics, flight mechanics•Special aircraft: rigid airships