# Airfoil Lift and Drag Extrapolation with Viterna and Montgomerie Methods
> Mahmuddin F.

URL kanonis: https://discover.unhas.ac.id/publications/pub_scopus_85020746586
Jurnal / Konferensi: Energy Procedia
Tahun terbit: 2017
DOI: https://doi.org/10.1016/j.egypro.2017.03.394
ISSN: 18766102
Citations: 27

## Authors
- Mahmuddin F.

## Abstract
In order to compute the performance of a propeller blade using blade element momentum (BEM) method, the two- dimensional airfoil performance of the propeller blade in terms of lift and drag coefficients is necessary. Such data usually can be obtained from model experiment only for limited range of angle of attack (AoA). Therefore, it is necessary to extrapolate the limited experimental data to obtain the data for the whole range of AoA. The present study uses 2 (two) methods which are Viterna and Montgomerie methods in order to extrapolate the performance of an airfoil. The formulas and procedures of both methods are presented and their application are also demonstrated using an airfoil shape of NACA23012. From this study, a relatively good agreement of the airfoil performance in terms of lift and drag coefficients can be found from computation results of the both methods.

## Keywords
- Airfoil
- Extrapolation
- Lift-to-drag ratio
- Angle of attack
- Lift (data mining)
- Drag
- Propeller
- Marine engineering
- Lift coefficient
- Drag coefficient
- Computation
- Mechanics
- Aerospace engineering
- Computer science
- Engineering
- Mathematics
- Structural engineering
- Physics
- Aerodynamics
- Reynolds number
- Mathematical analysis
- Algorithm
- Turbulence
- Data mining

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Sumber: Discover Unhas — RIMS Universitas Hasanuddin.
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