The pterostigma of insect wings an inertial regulator of wing pitch

  title={The pterostigma of insect wings an inertial regulator of wing pitch},
  author={R. {\AA}ke Norberg},
  journal={Journal of comparative physiology},
  • R. Norberg
  • Published 1 March 1972
  • Biology
  • Journal of comparative physiology
1. The pterostigma of insect wings usually is a pigmented spot close to the leading edge far out on the wing, having a greater mass than an equally large wing piece in adjacent wing regions. 2. In several dragonfly (Odonata) species the position of the spanwise torsion axis of the wings, the mass distribution of the wings, and the position of the chordwise centre of mass in chordwise wing strips were determined. 3. In the dragonflies investigated, the torsion axis of the wing lies ahead of the… 

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