Effects of yaw angle on aerodynamic response in locusts

Rajeev Kumar, Sergey V Shkarayev

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Aerodynamic forces and moments produced by locusts (Schistocerca americana) were investigated in a low-speed wind tunnel. The experimental setup included locusts mounted on a sensitive six-component microbalance using a sting. Tests were conducted at tunnel speeds of 0, 2, 3, 3.5 and 4 m/s at two body angles of attack and five positive yaw angles at each body angle of attack. The experimental results are presented for stroke-averaged forces and moments normalized using the insect body weight and length. Locusts generated more lift at higher velocities and at higher angles of attack, but none of locust generated lift greater than its weight. They generally produced net thrust at lower velocities and lower angles of attack and net drag at higher velocities, as expected. Interestingly, locusts responded to yaw by generating more positive side force, yawing moment and negative rolling moment. The lift force and pitching moment were largely insensitive to yaw.

Original languageEnglish (US)
Title of host publication50th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition
DOIs
StatePublished - 2012
Event50th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition - Nashville, TN, United States
Duration: Jan 9 2012Jan 12 2012

Other

Other50th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition
CountryUnited States
CityNashville, TN
Period1/9/121/12/12

Fingerprint

Angle of attack
Aerodynamics
Wind tunnels
Drag
Tunnels

Keywords

  • Body angle and flapping frequency
  • Lift
  • Locust
  • Pitch
  • Roll
  • Side force
  • Thrust
  • Yaw

ASJC Scopus subject areas

  • Aerospace Engineering

Cite this

Kumar, R., & Shkarayev, S. V. (2012). Effects of yaw angle on aerodynamic response in locusts. In 50th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition [AIAA 2012-0417] https://doi.org/10.2514/6.2012-417

Effects of yaw angle on aerodynamic response in locusts. / Kumar, Rajeev; Shkarayev, Sergey V.

50th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition. 2012. AIAA 2012-0417.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Kumar, R & Shkarayev, SV 2012, Effects of yaw angle on aerodynamic response in locusts. in 50th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition., AIAA 2012-0417, 50th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition, Nashville, TN, United States, 1/9/12. https://doi.org/10.2514/6.2012-417
Kumar R, Shkarayev SV. Effects of yaw angle on aerodynamic response in locusts. In 50th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition. 2012. AIAA 2012-0417 https://doi.org/10.2514/6.2012-417
Kumar, Rajeev ; Shkarayev, Sergey V. / Effects of yaw angle on aerodynamic response in locusts. 50th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition. 2012.
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