Numerical and experimental analyses of the ducted fan for the small VTOL UAV Propulsion

By Leesang Cho, Seawook Lee, Jinsoo Cho

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Ducted fans have higher thrust performance, higher propulsion efficiency and lower noise characteristics due to their duct system compared with commercial isolated propellers. The purpose of this study is to present design procedures in order to improve the aerodynamic performance of the ducted fan for the small VTOL UAV propulsion. In addition, the duct effect of ducted fans is analyzed to satisfy design requirements and improve performance. Aerodynamic design of the rotor and the stator blades of the ducted fan involves a series of steps: meanline analysis, through-flow analysis and aerodynamic analysis, based on consideration of the design requirements. The thrust performance of the ducted fan is somewhat higher compared with that of the rotor only, but wind tunnel test results of the ducted fan do not satisfy the design requirements. The thrust performance of the ducted fan is significantly different in the CFD results and wind tunnel results due to the inconsistency of the intake and the duct shape. Therefore, the thrust performance of the ducted fan would be somewhat improved by the optimization of the intake and the duct shape.

Original languageEnglish
Pages (from-to)328-336
Number of pages9
JournalTransactions of the Japan Society for Aeronautical and Space Sciences
Volume56
Issue number6
DOIs
StatePublished - 2013 Nov 1

Fingerprint

ducted fans
Unmanned aerial vehicles (UAV)
propulsion
Propulsion
Fans
thrust
aerodynamics
ducts
Ducts
wind tunnel
Aerodynamics
requirements
rotors
Wind tunnels
stator blades
Rotors
high thrust
wind tunnel tests
propellers
wind tunnels

Keywords

  • CFD Analysis
  • Ducted Fan
  • Free Vortex Design
  • Through-Flow Analysis
  • Wind Tunnel Test

Cite this

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abstract = "Ducted fans have higher thrust performance, higher propulsion efficiency and lower noise characteristics due to their duct system compared with commercial isolated propellers. The purpose of this study is to present design procedures in order to improve the aerodynamic performance of the ducted fan for the small VTOL UAV propulsion. In addition, the duct effect of ducted fans is analyzed to satisfy design requirements and improve performance. Aerodynamic design of the rotor and the stator blades of the ducted fan involves a series of steps: meanline analysis, through-flow analysis and aerodynamic analysis, based on consideration of the design requirements. The thrust performance of the ducted fan is somewhat higher compared with that of the rotor only, but wind tunnel test results of the ducted fan do not satisfy the design requirements. The thrust performance of the ducted fan is significantly different in the CFD results and wind tunnel results due to the inconsistency of the intake and the duct shape. Therefore, the thrust performance of the ducted fan would be somewhat improved by the optimization of the intake and the duct shape.",
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Numerical and experimental analyses of the ducted fan for the small VTOL UAV Propulsion. / Cho, By Leesang; Lee, Seawook; Cho, Jinsoo.

In: Transactions of the Japan Society for Aeronautical and Space Sciences, Vol. 56, No. 6, 01.11.2013, p. 328-336.

Research output: Contribution to journalArticle

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AB - Ducted fans have higher thrust performance, higher propulsion efficiency and lower noise characteristics due to their duct system compared with commercial isolated propellers. The purpose of this study is to present design procedures in order to improve the aerodynamic performance of the ducted fan for the small VTOL UAV propulsion. In addition, the duct effect of ducted fans is analyzed to satisfy design requirements and improve performance. Aerodynamic design of the rotor and the stator blades of the ducted fan involves a series of steps: meanline analysis, through-flow analysis and aerodynamic analysis, based on consideration of the design requirements. The thrust performance of the ducted fan is somewhat higher compared with that of the rotor only, but wind tunnel test results of the ducted fan do not satisfy the design requirements. The thrust performance of the ducted fan is significantly different in the CFD results and wind tunnel results due to the inconsistency of the intake and the duct shape. Therefore, the thrust performance of the ducted fan would be somewhat improved by the optimization of the intake and the duct shape.

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