VORTEX RECIRCULATION LIFT FOR GROUND EFFECT MACHINES,
Abstract
A vortex recirculation lift system for use on ground effect machines (GEMs) demonstrated that (1) the deformed vortex flow pattern can be generated and sustained, (2) the pressure developed by the small test arrangement exceeds base pressures currently employed on peripheral jet GEMs, (3) the hovering power requirements of the extremely non-optimum test unit are of the order of conventional peripheral jet GEMs indicating that a refined vortex recirculation system will greatly surpass current GEM lift systems, and (4) an inherently stable configuration might be evolved since powerful stabilizing moments were obtained by simple variations in geometry. This effort confirms prior theoretical work and provides a feedback which focuses on extensions and refinements to the theory. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 31, 1963
- Accession Number
- AD0433785
Entities
People
- G. Wiederkehr
- T. Fujita
- W. Bettes