The DataHawk is an electrically powered miniature UAV equipped with a thermodynamic sensor package measuring pressure, temperature, humidity, turbulence, and mean winds. The DataHawk type of vehicle occupies a niche in between a drop or balloon sonde, which is low cost but cannot be guided, and a typical UAV, which provides guidance flexibility but uses costly avionics and commercial aerospace components. The DataHawk was developed and is operated by the University of Colorado-Boulder.