The kinematics model based on the Slender-Body theory is proposed from the bionic movement of real fish. The Panel method is applied to the hydrodynamic performance analysis innovatively, with the Gauss-Seidel method to solve the Navier-Stokes equations additionally, to evaluate the flexible deformation of fish in swimming accurately when satisfying the boundary conditions. A physical prototype...

The International Moth dinghy is a 3.355m long single handed, una-rigged monohull dinghy. The class rules allow the use of hydrofoil that in certain wind conditions can significantly reduce resistance. A new velocity prediction program (VPP) has been developed to evaluate the impact of hydrofoil design and set-up on the performance of a Moth dinghy by simulating racing on a windward leeward cou...

A test apparatus was designed and constructed to observe the effect of sinusoidal pitching oscillations on the cavitation of thredimensional hydrofoils. The apparatus is capable of oscillating hydrofoils at a rate up to 50 Hz and provides for adjustments in oscillation amplitude and mean angle of attack. Observations of the effect of pitching oscillation on cavitation have been made for a NACA ...

Determination of Human Powered Helicopter Stability characteristics using Multi-Body System Simulation techniques

In this paper, we use the optical-type eye tracking system to control powered wheelchair. The userís eye movements are translated to screen position using the optical-type eye tracking system. The pupil-tracking goggles with a video CCD camera and a frame grabber analyzes a series of human pupil images when the user is gazing at the screen. A new calibration algorithm is then used to determine ...

This study experimentally investigated the influence of heat transfer from a heated hydrofoil on cavitating flow to understand evaporation phenomenon under high-heat-flux and high-speed conditions. A temperature difference was generated between mainstream by installing an aluminum nitride heater in NACA0015 fabricated copper. cavitation experiment performed high-temperature water tunnel at Inst...

This paper describes the design of a liquid-propellantpowered hot-gas actuator appropriate for human-scale power-autonomous robots. A prototype of the actuation system is described, and closed-loop tracking data is shown that demonstrates good motion control. Experiments to characterize the energetic performance of the actuation system indicate that the proposed system with a diluted propellant...

A solution to a broad category of nuisance suits is examined in this paper. The solution is to give defendants the option to have courts prevent settlements (by refusing to enforce them). Then, if a defendant knows he is facing a plaintiff who would not be willing to go to trial, the defendant would exercise his option to bar settlement, forcing the plaintiff to withdraw. And because the plaint...

The fluid–structure interaction of a flexible plunging hydrofoil immersed in current is solved numerically to analyze its propulsion enhancement due flexibility at Reynolds number 10000. After validating with available experimental data, the code used assess analytical predictions from linear theory. We consider large stiffness ratios, high thrust by flexibility, and small mass ratios appropria...

with the increasing installed capacity of desalination, the greenhouse gas emission for generating the required energy to power the desalination plants is also becoming the focus of attention in the world community. domestic reverse osmosis membranes have been very successful technology especially in the developing world to provide safe drinking water. the novel concept of photovoltaic powered ...