Numerical investigation of prop-rotor and tail-wing aerodynamic interference for a tilt-rotor UAV configuration

Jung, Yong Ju; You, Ju Yeol; Kwon, Oh Joon

doi:10.1007/s12206-014-0617-1

Cited by 11 publications

(2 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The results showed that the characteristics of the airflow in the inlet and outlet regions of the adjacent rotor made the speed distribution of the downwash airflow significantly asymmetric. Jung et al [23] researched the mechanism of the interaction between the downwash and the tail fin of a dual rotor CPUAS and achieved an accurate computational fluid dynamics (CFD) simulation of the inlet and outlet regions of the downwash between the two rotors. Yoon et al [24] conducted a numerical simulation and carried out the experimental verification of interactional aerodynamics of multi-rotor flows on a quad-rotor CPUAS in hover, the results showed that the separation distances, as well as the wings, had significant effects on the vertical forces of quad-rotor systems in hover.…”

Section: Introduction mentioning

confidence: 99%

Design and experiment of a hydraulic lifting wind field test platform for crop protection UAS

Zhang

Qiu

Xue

et al. 2021

International Journal of Agricultural and Biological Engineering

View full text Add to dashboard Cite

As a new type of crop protection machine, the crop protection unmanned aerial system (CPUAS) is developing rapidly in China. The wind field generated by the rotor has a great influence on the deposition and penetration of spraying droplets. The purpose of this study was to develop a reliable and stable test platform that could be used for wind field test of CPUAS, and to carry out the downwash experiments on the platform to obtain the downwash distribution law of a CPUAS Z-3N (100 kg level, Nanjing Research Institute on Simulation Technique, Nanjing, China). The tests showed that the performances of the developed platform could meet the expected design requirements. The platform operated stably and reliably during the downwash experiments of Z-3N, which indicated it could be applied for CPUASs of 100 kg level and below. The vibration characteristics of the platform with different heights (2.0 m, 3.0 m, 5.0 m, 7.0 m, 10.0 m) were obtained through modal analysis, which could effectively guide avoiding the resonance for stable and reliable operation during the experiments with the tested CPUAS Z-3N. A ring-radial method was designed combined with the platform for the downwash measurement. The experimental results showed that the downwash distribution of Z-3N was not symmetrical; the downwash wind speed decreased with the increase of the radial distance while the changing trend was not consistent as the height increased. Moreover, the area with high wind speed was mainly within 3.0 m of the radial distance, and the maximum value was 11.37 m/s. The study provided a new way for wind field test of CPUASs and would provide some references for better utilization of wind field during the CPUAS spraying.

show abstract

Section: Introduction mentioning

confidence: 99%

Design and experiment of a hydraulic lifting wind field test platform for crop protection UAS

Zhang

Qiu

Xue

et al. 2021

International Journal of Agricultural and Biological Engineering

View full text Add to dashboard Cite

show abstract

“…Yong et al . 11 investigate the aerodynamic interference between the prop-rotor and the tail-wing. The unstructured overset mesh is utilized in the unsteady flow calculation.…”

Section: Introductionmentioning

confidence: 99%

Aerodynamic performance of a small-scale tilt rotor: Numerical simulation and experiment in steady state

Hai-tao

Xia

Wang

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part C:

View full text Add to dashboard Cite

The present work studies the aerodynamic performance of a small-scale rotor in tilting transition states through wind tunnel tests and numerical simulations. Firstly, the test platform for the rotor aerodynamics is built up, and the Computational Fluid Dynamics (CFD) model of flow field around the rotors is established based on the multiple reference frame method. Secondly, the effects of flow velocity, tilt angle and advance ratio on the aerodynamic performance of the rotor are investigated using both the numerical simulation and the wind tunnel test. It is found that for the Model 8038 rotor with maximum effeciency of 0.567 at advance ratio of 0.43, the rotor thrust coefficient increases with the increase of the Reynolds number. At Reynolds number of 410 thousand to 820 thousand, the thrust coefficient increases slightly with the increase of the rotating speed. The results also show that the thrust coefficient decreases with the increase of the advance ratio. With high-speed airflow and relatively low-speed rotation, “windmill” phenomenon is found in the experiment. The tilting of the rotor from level flight to hovering increases the thrust coefficient. Highly dependency of the tilt angle on the thrust coefficients at given advance ratios is found in the wind tunnel tests.

show abstract

Guidance and control of a scaled-down quad tilt prop PAV

et al. 2015

View full text Add to dashboard Cite

Numerical investigation of prop-rotor and tail-wing aerodynamic interference for a tilt-rotor UAV configuration

Cited by 11 publications

References 5 publications

Design and experiment of a hydraulic lifting wind field test platform for crop protection UAS

Design and experiment of a hydraulic lifting wind field test platform for crop protection UAS

Aerodynamic performance of a small-scale tilt rotor: Numerical simulation and experiment in steady state

Guidance and control of a scaled-down quad tilt prop PAV

Contact Info

Product

Resources

About