• Publications
  • Influence
Drag of Spheroid-Cone Shaped Airship
Drag coefficients of streamlined bodies and complete airships are compared to confirm some general trends. Data obtained from flight testing an electrically powered, helium-filled, dirigible balloonExpand
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The Dragonfly Flight Envelope and its Application to Micro UAV Research and Development
Abstract In this paper we present quantitative analysis of three dimensional trajectories of dragonflies under free flight conditions. The trajectories were captured while male insects were engagedExpand
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Development of an airship for tropical rain forest canopy exploration
The design, manufacture and testing of a 480 cubic metre helium-filled airship, or dirigible balloon, intended for flight above tropical rain forest canopy is outlined. The requirements for theExpand
  • 28
Heavily loaded flight and limits to the maximum size of dragonflies (Anisoptera) and griffenflies (Meganisoptera)
An original hypothesis is presented that the maximum mass and size of living anisopteran dragonflies are constrained by a physiological performance limit: the wing muscle power required to permitExpand
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Hydrodynamic drift ratchet scalability
The rectilinear "drift" of particles in a hydrodynamic drift ratchet arises from a combination of diffusive motion and particle-wall hydrodynamic interactions, and is therefore dependent on particleExpand
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On flying insect size and Phanerozoic atmospheric oxygen
  • G. Dorrington
  • Biology, Medicine
  • Proceedings of the National Academy of Sciences
  • 5 November 2012
In a recent article in PNAS, Clapham and Karr (1) related the maximum wing length (MWL) of different Odonatoptera and Orthoptera species to Phanerozoic atmospheric oxygen partial pressure (pO2) asExpand
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Venus atmospheric platform options revisited
Various balloon systems intended as scientific platforms to float in the atmosphere of Venus at altitudes between about 35 and 65 km are briefly reviewed. Previous predictions of the altitudeExpand
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Performance of battery-powered airships
Abstract The performance of airships using battery and fuel cell power sources for propulsion is investigated. A parametric analysis is used to determine the mass breakdown of several, helium-filled,Expand
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