The aerodynamics developed from Newton’s equations. With the equations of continuity, momentum and energy can be obtained models describing the motion of fluids. A particular case occurs when the fluid motion is stationary, i.e., the fluid properties only change the position but not in the fluid field with time, and also can be neglected when the fluid viscosity. With these two features, steady movement and not viscous, you can get a potential role to be derived fluid velocity is obtained at each point in the game. Once we have obtained the fluid velocity, we can find other important quantities. The classic aerodynamic is explaining how lift is generated airfoils based on potential movements. This movement is ideal, since the zero viscosity never achieved. The application of the concept of aerodynamics is wide in the aircraft, both manned and unmanned. Considering this fact, this paper focuses on the aerodynamics in manned as well as unmanned aerial vehicles.
GPS vehicle system is a series of connections with a vehicle and a remote computer that is monitoring the ongoing of that certain vehicle while it is in transit. The GPS device used for this is a GPS vehicle tracker. This vehicle tracker works as a system that monitors the progress and locations of the vehicle with a tracker attached to it. It is usually with the aid of an internet-connected computer because the data from the devise has to be downloaded as it updates itself every now and then.
4×4, 4wd and four wheel drive and AWD all these terms are define the four-wheel vehicles drive train that allows all four wheels to receive power from the engine simultaneously. Many state people associate the term with off-road vehicles. In additionally US these cars are popular in the broader sport utility vehicles category.