Propeller Performance in Presence of Freestream: Applications in Modeling Multirotor UAVs

2019 ◽  
pp. 45-60
Author(s):  
Mojtaba Hedayatpour ◽  
Mehran Mehrandezh ◽  
Farrokh Janabi-Sharifi
Keyword(s):  
Propeller Performance

Recent Developments in Computational Methods for the Analysis of Ducted Propellers in Open Water

2019 ◽  
Vol 63 (4) ◽  
pp. 219-234
Author(s):  
João Baltazar ◽  
José A. C. Falcão de Campos ◽  
Johan Bosschers ◽  
Douwe Rijpkema
Keyword(s):  
Computational Methods ◽  
Open Water ◽  
Boundary Element Methods ◽  
Navier Stokes ◽  
Hydrodynamic Analysis ◽  
Numerical Predictions ◽  
Ducted Propeller ◽  
Recent Developments ◽  
Propeller Performance ◽  
Ducted Propellers

This article presents an overview of the recent developments at Instituto Superior Técnico and Maritime Research Institute Netherlands in applying computational methods for the hydrodynamic analysis of ducted propellers. The developments focus on the propeller performance prediction in open water conditions using boundary element methods and Reynolds-averaged Navier-Stokes solvers. The article starts with an estimation of the numerical errors involved in both methods. Then, the different viscous mechanisms involved in the ducted propeller flow are discussed and numerical procedures for the potential flow solution proposed. Finally, the numerical predictions are compared with experimental measurements.

scholarly journals High-speed propeller performance and noise predictions at takeoff/landing conditions

1989 ◽  
Vol 26 (6) ◽  
pp. 563-569 ◽  
Author(s):  
M. Nallasamy ◽  
R. P. Woodward ◽  
J. F. Groeneweg
Keyword(s):  
High Speed ◽  
Propeller Performance

Experimental and Numerical Study of Micro-Aerial-Vehicle Propeller Performance in Oblique Flow

2017 ◽  
Vol 54 (3) ◽  
pp. 1076-1084 ◽  
Author(s):  
B. Theys ◽  
G. Dimitriadis ◽  
P. Hendrick ◽  
J. De Schutter
Keyword(s):  
Numerical Study ◽  
Micro Aerial Vehicle ◽  
Oblique Flow ◽  
Aerial Vehicle ◽  
Propeller Performance

A method for predicting propeller performance considering ship motion in regular waves

2021 ◽  
Vol 232 ◽  
pp. 109135
Author(s):  
Myeong-Jin Eom ◽  
Kwang-Jun Paik ◽  
Yoon-Ho Jang ◽  
Ji-Yeon Ha ◽  
Dong-Woo Park
Keyword(s):  
Ship Motion ◽  
Regular Waves ◽  
Propeller Performance

Experimental Performance of a Trochoidal Propeller with High-Aspect-Ratio Blades

1989 ◽  
Vol 26 (03) ◽  
pp. 192-201 ◽  
Author(s):  
Neil Bose ◽  
Peter S. K. Lai
Keyword(s):  
Aspect Ratio ◽  
High Efficiency ◽  
Open Water ◽  
Finite Amplitude ◽  
Dynamic Stall ◽  
Frictional Drag ◽  
Overall Performance ◽  
Small Ship ◽  
Propeller Performance ◽  
Thrust And Torque

Open-water experiments were done on a model of a cycloidal-type propeller with a trochoidal blade motion. This propeller had three blades with an aspect ratio of 10. These experiments included the measurement of thrust and torque of the propeller over a range of advance ratios. Tests were done for forward and reverse operation, and at zero speed (the bollard pull condition). Results from these tests are presented and compared with: a multiple stream-tube theoretical prediction of the performance of the propeller; and a prediction of the performance of a single blade of the propeller, oscillating in heave and pitch, using unsteady small-amplitude hydrofoil theory with corrections for finite amplitude motion, finite span, and frictional drag. At present, neither of these theories gives a completely accurate prediction of propeller performance over the whole range of advance ratios, but a combination of these approaches, with an allowance for dynamic stall of the blades, should lead to a reliable simple theory for overall performance prediction. Application of a propeller of this type to a small ship is discussed. The aim of the design is to produce a lightly loaded propeller with a high efficiency of propulsion.

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