Ships – Hull or hull adjunct employing fluid dynamic forces to... – Having airfoil
Patent
1998-10-22
2000-05-09
Avila, Stephen
Ships
Hull or hull adjunct employing fluid dynamic forces to...
Having airfoil
114274, 114 611, B63B 116
Patent
active
060588721
ABSTRACT:
A catamaran-type boat having two or more demi-hulls that are connected by a wing-shaped superstructure is disclosed. The demi-hulls are further connected by two or more transverse hydrofoils. A tunnel is created between the demi-hulls and the superstructure. The shape of the superstructure takes advantage of the airflow through the tunnel to provide aerodynamic lift. The hydrofoils serve two purposes. The first is to provide hydrodynamic lift, and the second is to cancel wave build up between the hulls. The wave cancellation assists the stability of the craft by providing a relatively flat surface for the wing, to provide stable additional lift through the "wing in ground" effect. The combination of hydrodynamic lift, wave cancellation, and aerodynamic lift decreases the ship's drag and increases its speed.
REFERENCES:
patent: 4606291 (1986-08-01), Hoppe
patent: 4896621 (1990-01-01), Coles
patent: 4926773 (1990-05-01), Manor
patent: 4996935 (1991-03-01), Takeuchi
patent: 5311832 (1994-05-01), Payne
patent: 5355827 (1994-10-01), Barbazash et al.
patent: 5522333 (1996-06-01), Lang et al.
patent: 5592895 (1997-01-01), Schmidt
patent: 5711494 (1998-01-01), Saiz
Aframeev, Y. et al., "Hydrofoils on Catamaran Planing Hulls," Motor Boat and Yachting, 70:40-49 (1978) (Russian), portions translated English and edited by D. Tselnik et al. (1984).
Calkins, D., "The Hybrid Hydrofoil Catamaran (HYCAT)," pp. 246-257 in Proc. vol. II, Workshop on Developments in Hull Form Design (Wageningen, Netherlands Oct. 22-24, 1985).
Doctors, L., "Analysis of the Efficiency of an Ekranocat: A Very-High Speed Catamaran with Aerodynamic Alleviation," pp. 1-21 in Proceedings of International Conference on Wing-In-Ground Craft (London, Dec. 4-5, 1997).
Gee, N., "The Catfoil--A Foil Assisted Catamaran for Fast Ferry and Yacht Applications," pp. 107-123 in Proceedings FAST '91 First International Conference on Fast Sea Transportation (Trondheim, Norway 1991).
Katz, J. et al., "Thin Airfoil in Ground Effect," pp. 187-191 in Low Speed Aerodynamics (1991).
Latorre, R. et al., "High Speed Vessels for Transport and Defense," International Symposium on High Speed Vessels for Transport and Defence, pp. 1-11 (Nov. 23-24, 1995, London).
Latorre, R. et al., "Development of High Speed Marine Vehicle Design Database," Gulf Coast Region Maritime Technology Center, pp. 1-32 (Feb. 1996).
Latorre, R., "Increasing Performance using Hybrid Catamaran Hull Designs," pp. 1-23, Proceedings of Innovations in Marine Technology International Workboat Show (Nov. 5-7, 1997).
Miyata, H., "Development of a New-Type Hydrofoil Catamaran," J. Ship Res., 33:135-144 (1989).
Zhao, I. et al., "A Study on Performance of Hydrofoil Type Planning Boats," Shipbuilding of China, Trans. Chinese Soc. Nav. Arch. Eng., 138:1-8 (1997) (Chinese, with English abstract).
Avila Stephen
Board of Supervisors of Louisiana State University and Agricultu
Runnels John H.
LandOfFree
Hybrid hull for high speed water transport does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Hybrid hull for high speed water transport, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hybrid hull for high speed water transport will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1054615