UAV Icing: Low Reynolds Number Drone Propeller Performance During Dynamic Icing Process

Suurnäkki, Petri; Tiihonen, Mikko; Jokela, Tuomas

doi:10.2514/6.2021-2672

Cited by 5 publications

(3 citation statements)

References 18 publications

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“…Adding a 5 m/s wind velocity to a hovering UAV can result in a 67% increase in power at 3000 rpm. Suurnäkki [46] also observed an increased ice accretion rate with free-stream velocity in 2021. As a result, power and thrust changes under forward flight icing conditions may differ from those observed while hovering in an icing cloud.…”

Section: Effect Of Free-stream Velocitymentioning

confidence: 87%

“…In 2018, Yan [37] reported that increasing the RPM from 2000 to 3000 boosted the power requirements by 135% during the hovering state of a UAV in experiments performed under ice conditions of T ∞ = −10 • C. During experimental studies under rime-ice conditions conducted in 2021, Suurnäkki [46] also noted that increasing the RPM caused an increase in the rate of water impingement, which, in turn, caused more ice to accumulate. Increased amounts of ice are observed to be accreted along the blade's tip, where the rotational speeds are higher.…”

Section: Effect Of Rpmmentioning

confidence: 99%

“…In 2021, Suurnäkki [46] performed experimental studies to understand the variation of the thrust coefficient and power coefficient as a function of advance ratio at two constant RPMs of 3000 and 5000. For both the RPMs, the thrust coefficient decreased with an increase in advance ratio.…”

Section: Effect Of Advance Ratiomentioning

confidence: 99%

See 2 more Smart Citations

Ice Accretion on Rotary-Wing Unmanned Aerial Vehicles—A Review Study

Muhammed

Virk

2023

Aerospace

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Ice accretion on rotary-wing unmanned aerial vehicles (RWUAVs) needs to be studied separately from the fixed-wing UAVs because of the additional flow complexities induced by the propeller rotation. The aerodynamics of rotatory wings are extremely challenging compared to the fixed-wing configuration. Atmospheric icing can be considered a hazard that can plague the operation of UAVs, especially in the Arctic region, as it can impose severe aerodynamic penalties on the performance of propellers. Rotary-wing structures are more prone to ice accretion and ice shedding because of the centrifugal force due to rotational motion, whereby the shedding of the ice can lead to mass imbalance and vibration. The nature of ice accretion on rotatory wings and associated performance degradation need to be understood in detail to aid in the optimum design of rotary-wing UAVs, as well as to develop adequate ice mitigation techniques. Limited research studies are available about icing on rotary wings, and no mature ice mitigation technique exists. Currently, there is an increasing interest in research on these topics. This paper provides a comprehensive review of studies related to icing on RWUAVs, and potential knowledge gaps are also identified.

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Section: Effect Of Free-stream Velocitymentioning

confidence: 87%

Section: Effect Of Rpmmentioning

confidence: 99%