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In computational fluid dynamics, the projection method, also called Chorin's projection method, is an effective means of numerically solving time-dependent incompressible fluid-flow problems. It was originally introduced by Alexandre Chorin in 1967 [ 1 ] [ 2 ] as an efficient means of solving the incompressible Navier-Stokes equations .
ANSI/AMCA Standard 220 - Laboratory Methods of Testing Air Curtain Units For Aerodynamic Performance Rating establishes uniform methods for laboratory testing of air curtain units to determine aerodynamic performance in terms of airflow rate, outlet air velocity uniformity, power consumption and air velocity projection for rating or guarantee ...
A multi-axis thrust vectoring engine nozzle in motion. Thrust vectoring, also known as thrust vector control (TVC), is the ability of an aircraft, rocket or other vehicle to manipulate the direction of the thrust from its engine(s) or motor(s) to control the attitude or angular velocity of the vehicle.
[34] [35] [36] Powered by pseudospectral methods, Ross created a user-friendly set of objects that required no knowledge of his theory to run DIDO. This work was used in on pseudospectral methods for solving optimal control problems. [37] DIDO is used for solving optimal control problems in aerospace applications, [38] [39] search theory, [40 ...
Depending on the configuration, open-chain robotic manipulators require a degree of trajectory optimization. For instance, a robotic arm with 7 joints and 7 links (7-DOF) is a redundant system where one cartesian position of an end-effector can correspond to an infinite number of joint angle positions, thus this redundancy can be used to optimize a trajectory to, for example, avoid any ...
A natural science – one that seeks to elucidate the rules that govern the natural world using empirical and scientific methods. A physical science – one that studies non-living systems. A branch of physics – study of matter, its fundamental constituents, its motion and behavior through space and time, and the related entities of energy ...
The method is sometimes called minor loop synthesis in college textbooks, [1] [2] some government documents. [3] The method is suitable for design by graphical methods and was used before digital computers became available. In World War 2 this method was used to design gun laying control systems. [4] It is still used now, but not always ...
A related, and more commonly used algorithm is the velocity Verlet algorithm, [5] similar to the leapfrog method, except that the velocity and position are calculated at the same value of the time variable (leapfrog does not, as the name suggests). This uses a similar approach, but explicitly incorporates velocity, solving the problem of the ...