Skip to main content
Article thumbnail
Location of Repository

A Mathematical Model to Analyze the Static Stability of Hybrid (Aero- Hydrodynamically Supported) Vehicles.

By Maurizio Collu, Minoo H. Patel and Florent Trarieux

Abstract

Among the new concepts developed for high speed marine vehicles over the last two decades, the "aerodynamic alleviation" approach consists in using an aerodynamic surface to "alleviate" the weight sustained by the hydrodynamic lift. Such vehicle experiences aerodynamic and hydrodynamic forces of the same order of magnitude, therefore the dynamic models developed for airborne and waterborne vehicles are not suitable. Considering a vehicle having a high-speed prismatic planing hull and one or more aerodynamic surfaces, the authors propose two mathematical methods. The first one calculates the equilibrium attitude of the vehicle at a given speed and its numerical implementation has been used to undertake a parametric analysis of the influence of some configuration characteristics on performances. The second method analyzes the static stability of the HV. Starting from the dynamic analysis previously proposed by the authors, the characteristic polynomial of the HV dynamics is derived and a static stability criterion is proposed

Topics: AAMV, dynamics, planing, WIGe, Wing In Ground
Year: 2008
OAI identifier: oai:dspace.lib.cranfield.ac.uk:1826/3356
Provided by: Cranfield CERES

Suggested articles

Citations

  1. (2007). A Unified Mathematical Model for High Speed Hybrid (Air and Water-borne)
  2. An investigation into the flight dynamics of wing in ground effect aircraft operating in aerodynamic flight’,
  3. (1997). An Investigation into the Longitudinal Stability of Wing In Ground effect vehicles’, MSc thesis,
  4. (1997). Analysis of the Efficiency of an Ekranocat: A Very High Speed Catamaran with Aerodynamic Alleviation’,
  5. (1978). Design and performance of the ram wing planing craft KUDU II’, AIAA/SNAME Advanced Marine Vehicles Conferences,
  6. (1960). Effect of Ground Proximity on the Aerodynamic Characteristics of Aspect-Ratio-1 Airfoils With and WIthout End Plates’,
  7. (1996). Ekranoplans - the GEM's of fast water transport’,
  8. (1976). Hybrid ram-wing/planing craft -today's raceboats, tomorrow's outlook’, doi
  9. (1964). Hydrodynamic Design of Planing Hulls’,
  10. (2005). Hydrodynamics of HighSpeed Vehicles’, doi
  11. (2007). Inclusion of Whisker Spray Drag in Performance Prediction Method for High-Speed Planing Hulls’,
  12. (2002). Longitudinal stability and dynamic motion of a small passenger WIG craft’, doi
  13. (1968). On the Longitudinal Dynamic Stability of a Ground Effect Wing’,
  14. (2000). Peculiarity of the theory and design’, Saint Petersburg Sudostroyeniye,
  15. (1978). Results of full scale trials on two high speed planing craft (KUDU II
  16. (2002). Secrets of Tunnel Boat Design’,
  17. (1995). Stability and control of ground effect aircraft in longitudinal motion (translation)’, David W. Taylor Naval Ship Research and
  18. Stability of Ground Effect Vehicles’, Cranfield College of Aeronautics,
  19. (2004). The Quest for Speed at Sea’, Naval Surface Center, Carderock Division, Technical Digest,
  20. (1978). Theoretical Determination of Porpoising Instability of High-Speed Planing Boats’,
  21. (1970). WIG Longitudinal Stability Criteria (Kriterii prodol'noy ustoychivosti ekranoplana)’,
  22. (2006). Wing-in-ground effect vehicles’, doi

To submit an update or takedown request for this paper, please submit an Update/Correction/Removal Request.