Miniature multihole airflow sensor for lightweight aircraft over wide speed and angular range скачать в хорошем качестве

Miniature multihole airflow sensor for lightweight aircraft over wide speed and angular range

An aircraft's airspeed, angle of attack, and angle of side slip are crucial to its safety, especially when flying close to the stall regime. Various solutions exist, including pitot tubes, angular vanes, and multihole pressure probes. However, current sensors are either too heavy (above 30 g) or require large airspeeds (above 20 m/s), making them unsuitable for small uncrewed aerial vehicles. We propose a novel multihole pressure probe, integrating sensing electronics in a single-component structure, resulting in a mechanically robust and lightweight sensor (9 g) which we released to the public domain. The sensor is calibrated using a multivariate polynomial regression model over an airspeed range of 3-27 m/s and an angle of attack / sideslip range of 35 deg, achieving a mean absolute error of 0.44 m/s and 0.16 deg. Finally, we validated the sensor in outdoor flights near the stall regime. Our probe enabled accurate estimations of airspeed, angle of attack and sideslip during different acrobatic maneuvers. Due to its size and weight, this sensor will enable safe flight for lightweight, uncrewed aerial vehicles flying at low speeds close to the stall regime. PDF: https://infoscience.epfl.ch/handle/20... https://doi.org/10.1109/LRA.2025.3604704 Data and Code: https://doi.org/10.5281/zenodo.15254763 Authors: Lukas Stuber*, Simon Luis Jeger*, Raphael Zufferey, Dario Floreano Laboratory of Intelligent Systems (LIS) at Swiss Federal Institute of Technology Lausanne (EPFL), Switzerland Video references: WVUIRL    • Failure: Phastball Stall in Flight