FT Technologies manufactures lightweight yet rugged wind sensors for UAVs and SWaP applications. FT sensors are unique in the marketplace in that we use acoustic resonance to measure wind speed, direction and acoustic air temperature. Acu-Res® Technology provides a superior signal/noise ratio, which enables high levels of data availability and accuracy in acoustically and vibrationally noisy environments. FT sensors are designed to withstand shock and vibration and have passed all our HALT tests at 60G. This may sound like overkill, but as some fixed wing drones are launched by catapult, this can place enormous mechanical stress on sensors, so we are confident that our sensors are tough. In addition, since UAVs are essentially mobile radio transmitters/receivers, FT sensors are designed to be immune to Radio Frequency Interference, and to have low enough emissions that they will not affect neighbouring sensors on the drone.