Efficiency Measurement of Bionic Propulsion

2011 ◽  
Vol 217-218 ◽  
pp. 1014-1019
Author(s):  
Yun Liu ◽  
Wei Jiang ◽  
Zhi Sheng Jing ◽  
Xiang Yong Su ◽  
Ming Lu
Keyword(s):  
Water Resistance ◽  
Efficiency Measurement ◽  
Propulsion System ◽  
Reciprocating Motion ◽  
Forward Movement ◽  
Wing Disk ◽  
Travel Agencies ◽  
Low Efficiency ◽  
Maximum Utilization ◽  
Bionic Propulsion

The existences of traditional water propulsion promote low efficiency. Used by biological propulsion, after the last million years of evolution, the maximum utilization of its power, the best way. Bionic propulsion system designed in this paper consists of two large travel umbrella wing plate in reciprocating linear travel agencies, led by the reciprocating motion along the vertical, in the water under the influence of backward movement of the wing disk automatically open, resulting in the pull forward, the forward movement of the wing disk automatically shut down to reduce water resistance. This paper designs a bionic propulsion and efficiency measurement tests carried out.

Simulation about Bionic Push of Amphibious Vehicle

2011 ◽  
Vol 48-49 ◽  
pp. 1057-1060
Author(s):  
Zhi Sheng Jing ◽  
Yun Liu ◽  
Shan Chao Tu ◽  
Feng Li ◽  
Guo Wei Qin
Keyword(s):  
Wing Disc ◽  
Travel Agency ◽  
Reciprocating Motion ◽  
Forward Movement ◽  
Propulsive Efficiency ◽  
Straight Line ◽  
Biological Methods ◽  
Design And Manufacture ◽  
Bionic Propulsion

The traditional method of propulsion of Amphibious vehicles in water has tracked the water, propeller and waterjet propulsion. But the propulsive efficiency is very low, the maximum not more than 30%. Biological methods used to promote, through the million years of evolution, its power utilization of the highest, the best way. Bionic propulsion system designed in this paper consists of two umbrella-shaped wing plate in the large travel agency travel back and forth, driven by a straight line, Carried out along the longitudinal reciprocating motion of vehicles in the water under the influence of backward movement of the wing disk automatically open, resulting in tension on the vehicle forward, Forward movement of the wing disc automatically shut down to reduce the flow resistance. In this way, amphibious vehicles, with the wing disc back and forth movement, has been the role of forward traction, so that forward movement of vehicle. In this paper, the same wing disc, wing disc at different angles, different velocity simulation of the situation. Come forward to promote strength and speed, angle of the curve. To promote the device provides the basis for the physical design and manufacture.

scholarly journals Innovative Energy-Saving Propulsion System for Low-Speed Biomimetic Underwater Vehicles

Energies ◽  
2021 ◽  
Vol 14 (24) ◽  
pp. 8418
Author(s):  
Paweł Piskur ◽  
Piotr Szymak ◽  
Michał Przybylski ◽  
Krzysztof Naus ◽  
Krzysztof Jaskólski ◽  
...  
Keyword(s):  
Underwater Vehicle ◽  
Underwater Vehicles ◽  
Propulsion System ◽  
Forward Movement ◽  
Propulsion Systems ◽  
Low Speed ◽  
Structure Interaction ◽  
Fluid Velocities ◽  
Different Types ◽  
Oscillation Frequencies

This article covers research on an innovative propulsion system design for a Biomimetic Unmanned Underwater Vehicle (BUUV) operating at low speeds. The experiment was conducted on a laboratory test water tunnel equipped with specialised sensor equipment to assess the Fluid-Structure Interaction (FSI) and energy consumption of two different types of propulsion systems. The experimental data contrast the undulating with the drag-based propulsion system. The additional joint in the drag-based propulsion system is intended to increase thrust and decrease energy input. The tests were conducted at a variety of fins oscillation frequencies and fluid velocities. The experiments demonstrate that, in the region of low-speed forward movement, the efficiency of the propulsion system with the additional joint is greater.

Technical Efficiency Measurement and Inverse 𝔹-Convexity: Moroccan Travel Agencies

2012 ◽  
Vol 18 (3) ◽  
pp. 597-606 ◽  
Author(s):  
Olga Goncalves ◽  
Qi Bin Liang ◽  
Nicolas Peypoch ◽  
Sara Sbai
Keyword(s):  
Technical Efficiency ◽  
Efficiency Measurement ◽  
Travel Agencies

The Nonlinear Oscillation Simulation of Robofish’s Two Joints Tail

2015 ◽  
Vol 738-739 ◽  
pp. 1070-1076
Author(s):  
Xiang Hong Kong ◽  
Xin Lei Ji ◽  
Ke Xiang Lu ◽  
Cheng Rong Han ◽  
Wei Guo Qian ◽  
...  
Keyword(s):  
Nonlinear Oscillation ◽  
Tilt Angle ◽  
Calculation Model ◽  
Propulsion System ◽  
Motion Model ◽  
Simulation Environment ◽  
Matlab Simulation ◽  
Reciprocating Motion ◽  
The Relationship

to study the nonlinear oscillation principle of new robofish’s two joints tail, the relationship between tilt angle of tail fin that produces thrust and cycle offer quency produced by two joints fin tail propulsion system can be calculated applying reciprocating motion principle in theory; by means of contrastive analysising the results of calculation model, and making use of MATLAB simulation environment to experimental simulate motion model, the fin tail NLSST can be further proved.

Rendez vous with Saturn's rings

1984 ◽  
Vol 75 ◽  
pp. 743-759 ◽  
Author(s):  
Kerry T. Nock
Keyword(s):  
Solar Energy ◽  
Electric Propulsion ◽  
Power Source ◽  
Propulsion System ◽  
Low Thrust ◽  
Ring Plane ◽  
The Earth ◽  
Total Impulse ◽  
Saturn's Rings

ABSTRACTA mission to rendezvous with the rings of Saturn is studied with regard to science rationale and instrumentation and engineering feasibility and design. Future detailedin situexploration of the rings of Saturn will require spacecraft systems with enormous propulsive capability. NASA is currently studying the critical technologies for just such a system, called Nuclear Electric Propulsion (NEP). Electric propulsion is the only technology which can effectively provide the required total impulse for this demanding mission. Furthermore, the power source must be nuclear because the solar energy reaching Saturn is only 1% of that at the Earth. An important aspect of this mission is the ability of the low thrust propulsion system to continuously boost the spacecraft above the ring plane as it spirals in toward Saturn, thus enabling scientific measurements of ring particles from only a few kilometers.

Experiments on Water Resistance

1908 ◽  
Vol 66 (1719supp) ◽  
pp. 373-373
Author(s):  
Karl Wallin
Keyword(s):  
Water Resistance
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