Multikopter als fliegende Luftschadstoffmessstationen?

Schlerf, Andreas; Bretschneider, Lutz; Lampert, Astrid; Baum, Andrew; Buchholz, M.; Seldschopf, Rickmar; Sobotta, André; Bohlius, Henning; Del, Angelina; Ebert, Volker; Kim, Mi Eon; Nowak, Andreas; Düsing, Sebastian; Käthner, Ralf; Wehner, B.; Erraji, Hassnae; Grasse, Achim; Lange, Anne Caroline; Schuldt, Tobias; Tillmann, Ralf; Wesolek, Christian; Langner, Marcel; Rüdiger, Julian; Wallek, Stefan; Frost, Paul C.; Krüger, Thomas; Scholz, Hendrik

doi:10.37307/j.1868-7776.2022.03.05

Cited by 1 publication

(2 citation statements)

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“…The quadcopter used for the study was designed for a maximum take-off weight of 25 kg, operations up to 1000 m altitude above ground to measure air quality parameters, and wind speed up to 35 km h −1 during take-off and landing, and up to 70 km h −1 in free flight [32,33]. The outer dimensions of the quadcopter are 1650 mm × 1650 mm × 300 mm with a cube-shaped payload housing of 370 mm edge length on top of a squared central base plate, and sensors and a safety parachute placed on top of it (Figure 1).…”

Section: Quadcopter Systemmentioning

confidence: 99%

“…The flight trials were performed during the initial test phase of quadcopters in the 25 kg class, newly developed for a specific project of atmospheric research [32,33]. During the test program, it was possible to implement additional sensors for determining high resolution pressure, temperature, and vibration measurements at different positions for investigating the potential impact on atmospheric measurements.…”

Section: Introductionmentioning

confidence: 99%

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Flight Experiments and Numerical Simulations for Investigating Multicopter Flow Field and Structure Deformation

Pätzold,

Bauknecht,

Schlerf

et al. 2023

Atmosphere

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The flow field induced by multirotor drones is of high interest for atmospheric research, as it locally influences the atmosphere and therefore may have an impact on the sensors installed for atmospheric measurements. Further, on-board vibrations can cause significant interference with the measurement equipment. To investigate the near flow field, an approach combining measurements of pressure and temperature distribution in-flight and in a laboratory setup together with numerical simulations was applied. Existing high-frequency measurement equipment was piggybacked during the initial flight tests with a newly developed 25 kg quadcopter system in a low-cost early-stage-error approach to obtain initial data and experience. During the flights, high resolution sensors for measuring pressure, temperature, acceleration, and deformation were applied with different setups at different locations below one of the rotor planes, respectively, at one rotor arm, to determine the multicopter’s influence on pressure and temperature measurements, to investigate rotor arm deformations, and to obtain data to compare with numerical simulations of this rotor setup. An external Schlieren-type measurement technique was tested to visualise the rotor vortices. The applied measurement techniques proved to be suitable for acquiring the state of the rotor-induced flow, but with some limitations. The comparison of measurements and simulations showed basic agreement and allowed for the identification of necessary adaptations for subsequent studies. The interaction of the rotor wakes with the rotor arms could be identified as the main source of the measured structural vibrations. The need for necessary improvements in the measurement setup, flight operation, and simulation setup is presented in detail.

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Section: Quadcopter Systemmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%