Measurement of unsteady aerodynamic forces of 3D flapping wing in hovering flight (1st report, influences of Reynolds number, reduced frequency and planform)

Hiroto Nagai, Takumi Ito, Keita Miura, Toshiyuki Hayase, Koji Isogai

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

An experimental study of the aerodynamic characteristics of 3-dimensional flapping wing in hovering flight is conducted in the wide range of parameters, which are Reynolds number, reduced frequency and wing planforms. Lift and power are measured on scaled flapping wings, which mimic bumblebee and cicada wings, and which are delta wings with different locations of maximum chord. The results show that lift and power (1) are almost unchanged in Re = 800 -5 000, (2) increase as the reduced frequency increases, although the effeciency is constant, and (3) increase as the location of maximum chord moves from wing base to tip, although the effeciency decreases.

Original languageEnglish
Pages (from-to)2450-2458
Number of pages9
JournalNihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
Volume73
Issue number12
Publication statusPublished - Dec 2007
Externally publishedYes

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hovering
planforms
unsteady aerodynamics
Planforms
aerodynamic forces
flapping
wings
Reynolds number
Aerodynamics
flight
wing planforms
delta wings
aerodynamic characteristics

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering

Cite this

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T1 - Measurement of unsteady aerodynamic forces of 3D flapping wing in hovering flight (1st report, influences of Reynolds number, reduced frequency and planform)

AU - Nagai, Hiroto

AU - Ito, Takumi

AU - Miura, Keita

AU - Hayase, Toshiyuki

AU - Isogai, Koji

PY - 2007/12

Y1 - 2007/12

N2 - An experimental study of the aerodynamic characteristics of 3-dimensional flapping wing in hovering flight is conducted in the wide range of parameters, which are Reynolds number, reduced frequency and wing planforms. Lift and power are measured on scaled flapping wings, which mimic bumblebee and cicada wings, and which are delta wings with different locations of maximum chord. The results show that lift and power (1) are almost unchanged in Re = 800 -5 000, (2) increase as the reduced frequency increases, although the effeciency is constant, and (3) increase as the location of maximum chord moves from wing base to tip, although the effeciency decreases.

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