High Quality Content by WIKIPEDIA articles! X-Plane is a flight simulator for personal computers produced by Laminar Research. IT runs on iPhone/iPod Touch, Palm's WebOS, Linux, Mac, or Windows. X-Plane is packaged with other software to build and customize aircraft and scenery, offering a complete flight simulation environment. X-Plane also has a plugin architecture that allows users to create their own modules, extending the functionality of the software. X-Plane distinguishes itself by implementing a concept known as blade element theory. TRaditionally, flight simulators try to emulate the real-world performance of an aircraft by using lookup tables to determine things such as lift or drag. THese simulators do a good job of simulating the flight characteristics of the aircraft they were designed to simulate, but are not useful in design work, and do not predict the performance of aircraft when the actual figures are not available.