Transition measurements of upper and lower rotor blade surfaces in forward flight

Heineck, James T.; Overmeyer, Austin; Spooner, Hannah; Gardner, Anthony Donald; Weiss, Armin; Raffel, Markus

doi:10.2514/6.2020-3103

Aiaa Aviation 2020 Forum 2020

DOI: 10.2514/6.2020-3103

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Transition measurements of upper and lower rotor blade surfaces in forward flight

James T. Heineck

Austin Overmeyer

Hannah Spooner

et al.

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2024

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Cited by 2 publications

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cntTSP visualization technique for rotating blade surface flow at low Reynolds number

Ikami,

Nishimura,

Nagai

2024

Exp Fluids

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Research and development of aircraft with rotating wings at low Reynolds numbers have received much attention. This study proposes using a carbon nanotube temperature-sensitive paint (cntTSP) measurement technique to visualize the surface flow of rotor blades at low Reynolds numbers. Temperature-sensitive paint (TSP) can optically measure a two-dimensional temperature field using the thermal quenching of luminophores. A carbon nanotube thin layer is used to heat the TSP layer in cntTSP measurements. For the experimental condition, the low Reynolds number at 75% of the rotor radius was 1.1 × 104, and a blade tip speed of 7.2 m/s. Temperature distributions showing a leading edge vortex (LEV) were observed in the visualization results. Furthermore, the LEV region expanded from the wing-tip side to the wing-root side at high-pitch angles. These visualization results show the applicability of the cntTSP measurement technique for investigating the surface flow field of rotor blades at low Reynolds numbers. Graphical abstract

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cntTSP visualization technique for rotating blade surface flow at low Reynolds number

Ikami,

Nishimura,

Nagai

2024

Exp Fluids

View full text Add to dashboard Cite

show abstract

Computational Fluid Dynamics Transition Models Validation for Rotors in Unsteady Flow Conditions

Jain

2022

Journal of Aircraft

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Transition measurements of upper and lower rotor blade surfaces in forward flight

Cited by 2 publications

References 6 publications

cntTSP visualization technique for rotating blade surface flow at low Reynolds number

cntTSP visualization technique for rotating blade surface flow at low Reynolds number

Computational Fluid Dynamics Transition Models Validation for Rotors in Unsteady Flow Conditions

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