Design and Evaluation of Sensor Housing for Boundary Layer Profiling Using Multirotors

摘要: Traditional configurations for mounting Temperature-Humidity (TH) sensors on multirotor Unmanned Aerial Systems (UASs) often suffer from insufficient radiation shielding, exposure to mixed and turbulent air propellers, inconsistent aspiration while situated in the wake of UAS. Descent profiles using traditional methods are unreliable (when compared an ascent profile) due mixing by UAS descending into that flow field. Consequently, atmospheric boundary layer rely such bias-prone certain flight patterns (such as descent). This article describes evaluates a novel sensor housing designed shield airborne artificial heat sources wet-bulbing pulling outside rotor wash influence. The is mounted above propellers exploit rotor-induced pressure deficits passively induce high-speed laminar airflow aspirate consistently. Our design modular, accommodates variety other sensors, would be compatible with wide range commercially available multirotors. Extensive tests conducted at altitudes up 500 m Above Ground Level (AGL) show facilitates reliable measurements phenomena invariant orientation ambient wind, even high vertical/horizontal speeds (up 5 m/s) A low standard deviation errors shows good agreement between descent proves our unique various missions.