Flapping Foil Propulsion System in Ship and Underwater Vehicles
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This document presents information on flapping foil propulsion systems for ships and underwater vehicles. It discusses how current marine propulsion systems have disadvantages like low efficiency and lack of eco-friendliness. Flapping foil propulsion aims to increase efficiency and be more environmentally friendly by mimicking the movement of living organisms. A flapping foil uses flexible polyurethane structures that allow variable angles of movement like fish. This type of propulsion could increase efficiency over 40% for ships and provide good maneuverability and scalability for underwater vehicles. The presentation provides details on the mechanics and advantages of flapping foil propulsion for both ships and underwater applications.
Flapping Foil Propulsion System in Ship and Underwater Vehicles
- 1. Presented By:- FLAPPING FOIL PROPULSION SYSTEM FOR SHIPS AND UNDERWATER VEHICLES Sharat Mathew Reg. No. 12020019
- 2. 2Saturday, 10 October 2015 Abstract From ancient time onwards, humans have been depending on marine propulsion systems for various purposes. As time advanced marine propulsion systems have also undergone various advancements. In present scenario, we have a number of marine propulsion systems such as diesel and gas turbine propulsion systems. The major disadvantages in common to all these propulsion systems are variable and low efficiencies and less eco-friendly. This presentation deals with the use of flapping foil propulsion system in ships and underwater vehicles. Flapping foil is a highly flexible polyurethane structure which mimics the propulsion modes of living beings which are supposed to be more efficient and nature blending. It is found that flapping foil propulsion systems helps in increasing the efficiency and proves to be eco-friendly. Keywords : Marine Propulsion, Ship, Underwater Vehicle, Flapping Foil.
- 3. 3Saturday, 10 October 2015 Contents Introduction Principle of Marine Propulsion Different types of Propulsion Systems There Common Disadvantages Why Flapping Foil? What is Flapping Foil? Flapping Foil in Ships Flapping Foil in UWV Conclusion References
- 4. 4Saturday, 10 October 2015 Introduction Marine Propulsion systems fall into three categories i. Human Propulsion ii. Sailing iii. Mechanical Propulsion In this, Human propulsion and Sailing systems were dominant form of propulsion until the 19th century. Mechanical propulsion systems generally consist of a motor or engine turning a propeller or an impeller or wave propulsion fins. Due to there certain disadvantages new modes of propulsion systems where needed to be used.
- 5. 5Saturday, 10 October 2015 Principle of Marine Propulsion A ship moves through the water using propelling devices , such as paddle wheels or propellers. These devices impart velocity to a column of water and moves it in the opposite direction in which it is desired to move the ship. A force, called reactive force because it reacts to the force of the column of water, is developed against the velocity-imparting device. This force, also called thrust, is transmitted to the ship and causes the ship to move through the water.
- 6. 6Saturday, 10 October 2015 Principle of Marine Propulsion
- 7. 7Saturday, 10 October 2015 Different types of Propulsion Systems Diesel propulsion system Wind propulsion system Nuclear propulsion system Gas turbine propulsion system Fuel cell propulsion system Biodiesel fuel propulsion system Solar propulsion system Steam turbine propulsion system Diesel electric propulsion system Water jet propulsion system Gas fuel or tri fuel propulsion system
- 8. 8Saturday, 10 October 2015 Diesel Propulsion System Diesel propulsion system is the most commonly used marine propulsion system converting mechanical energy from thermal forces.
- 9. 9Saturday, 10 October 2015 Gas Turbine Propulsion System Gas turbine propulsion is used for naval as well as non-naval ships. In case of naval ships, the gas turbine propulsion system aids in faster movement of the ships which is necessary in case of the ship coming under attack.
- 10. 10Saturday, 10 October 2015 Common Disadvantages Variable and Low efficiency- Thermal efficiencies are lower for similar power and varies with ambient temp.a Less Eco Friendly- Various harmful emissions such as CO, NOX, SOX, volatile organic compounds and particulate matter. Underwater Noise and Unwanted Vibration. Some sources are not reliable at all time - Wind and Solar.
- 11. 11Saturday, 10 October 2015 Why Flapping Foil? In order to make the ship more efficient and eco- friendly. The propulsive systems of living beings are expected to be the most efficient and nature blending. Flaps are made flexible which enable it to have a variable angle of movement. Combined flapping and undulation mode propulsion systems for underwater vehicles have advantages such as ecologically pure, and higher efficiency.
- 12. 12Saturday, 10 October 2015 What is Flapping Foil? It is a structure made of polymer. It is highly flexible. Commonly made of polyurethane. Flexible flaps are chosen because they are found to be more efficient than rigid one. The concept of this have been came from movement of the fish. They are having more durability.
- 13. 13Saturday, 10 October 2015 Flapping Foil in Ships Flapping Foil 2D Stimulation..
- 14. 14Saturday, 10 October 2015 Flapping Foil in Ships Mechanism..
- 15. 15Saturday, 10 October 2015 Flapping Foil in Ships Flapping Foil during the two strokes..
- 16. 16Saturday, 10 October 2015 Flapping Foil in Ships
- 17. 17Saturday, 10 October 2015 Flapping Foil in Ships Advantages.. Lower underwater noise. Better maneuverability at low ship speeds. Higher efficiency.
- 18. 18Saturday, 10 October 2015 Flapping Foil in Under Water Vehicle Flapping foil uwv contains 4 foils one pair at the bow and another at the stern. The foils are driven by separate actuators ,196w and a 15w dc brush motor. The vehicle is connected to a LAN, there by controlled from the surface.
- 19. 19Saturday, 10 October 2015 Flapping Foil in Under Water Vehicle Two views of flapping foils UWV TOP VIEWSIDE VIEW
- 20. 20Saturday, 10 October 2015 Flapping Foil in Under Water Vehicle
- 21. 21Saturday, 10 October 2015 Flapping Foil in Under Water Vehicle Advantages.. Good scalability and flexibility. Can be operated at dynamic environment. High maneuverability. Easily controlled.
- 22. 22Saturday, 10 October 2015 Conclusion So it can be concluded that Flapping foil in ship and underwater are more eco friendly. It can also increase the propulsive efficiency by more than 40%. Further improvement in design in flapping foils and mechanism could increase the efficiency and speed in ships as well as in UWV.
- 23. 23Saturday, 10 October 2015 References “Oscillating foils for ship propulsion J. Mattheijssens” 1, J.-P. Marcel1, W. Bosschaerts1, D. Lefeber2 1Royal Military Academy, Department MECA Renaissancelaan 30-1050 Brussel 2Vrije Universiteit Brussel, Robotics and Multibody Mechanics Group Pleinlaan 2-1050 Brussel, 2012 “Design and Projected Performance of a Flapping Foil AUV” StephenLicht,VictorPolidoro,MelissaFlores,FranzS.Hover,Associa teMember,IEEE,andMichaelS.Triantafyllou, 2004 “Hydrodynamics of fishlike swimming”, Triantafyllou,M.S, Triantafyllou,G.S.,Yue,D.K.P.,2000, An. Review Fluid Mech. 32. “Marine propulsion in waves by flapping-foil systems” Kostas A. Belibassakis, School of Naval Architecture and Marine Engineering National Technical University of Athens Heroon Polytechniou 9, Zografos 15773, Athens, 2015 “Maneuvering Hydrodynamics of Fish and Small Underwater Vehicles”,1 Promode R. Bandyopadhyay2 Propulsion, Hydrodynamics and Silencing Division, Naval Undersea Warfare Center, Newport, Rhode Island 02841, 2002 “Different types of marine propulsion systems”- Wikipedia
- 24. 24Saturday, 10 October 2015 THANKS TO EVERYONE.