Development of UV-curable inflatable wings for low-density flight applications

Justin D. Kearns, Michiko Usui, Suzanne Weaver Smith, Stephen E. Scarborough, Timothy R. Smith, David P. Cadogan

Research output: Contribution to journalConference articlepeer-review

41 Scopus citations

Abstract

The concept of an unmanned spacecraft launched to Mars or Venus to release an aircraft designed to fly an exploratory mission is nearing reality. Recent projects involving unfolding rigid-wing aircraft have demonstrated high-altitude, low-density flight capabilities. An alternate approach for the wing design is an inflatable composite wing impregnated with a UV-curable resin. With this approach, wings are pressurized for deployment, then rigidize with exposure to UV radiation from the sun. Once rigid, the wings no longer require pressurization to maintain their shape. A project named BIG BLUE (Baseline Inflatable-wing Glider Balloon-Launched Unmanned Experiment) to develop and verify technologies for inflatable, UV-rigidizable wings culminated in a demonstration flight on May 3, 2003. The flight experiment included three stages: 1) balloon-launched ascent to 55,000 ft, 2) deployment of inflatable-rigidizable wings and continued ascent to 89,603 ft and 3) release from the balloon and return to earth under a parachute. The test article consisted of an unmanned aircraft including the folded wings, an inflation system, microprocessor control, sensors, cameras, GPS and communications radios. In this paper, aspects of the UV-curable composite wing design are presented including stress and thermal analyses and laboratory tests to determine cure times. Results of the demonstration flight are also included.

Original languageEnglish
Pages (from-to)31-42
Number of pages12
JournalCollection of Technical Papers - AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
Volume1
StatePublished - 2004
EventCollect. of Pap. - 45th AIAA/ASME/ASCE/AHS/ASC Struct., Struct. Dyn. and Mater. Conf.; 12th AIAA/ASME/AHS Adapt. Struct. Conf.; 6th AIAA Non-Deterministic Approaches Forum; 5th AIAA Gossamer Spacecraft Forum - Palm Springs, CA, United States
Duration: Apr 19 2004Apr 22 2004

ASJC Scopus subject areas

  • Architecture
  • General Materials Science
  • Aerospace Engineering
  • Mechanics of Materials
  • Mechanical Engineering

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