How the Onboard Computer Systems of Airplanes Work

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A single aircraft position describes the actual navigation performance (ANP) of an aircraft circle, measured in nautical miles in diameter. It’s a lot more complicated than the systems which run something like casino rewards bonus coupons, for instance. An aircraft must have its ANP minus a set of required navigation services (RNP) to operate at a certain high level of airspace.

The FMS mode is also called LNAV (Lateral Navigation and Lateral Flight Plan) or Vnav (Vertical Navigation and Vertical Flight Plan). The VNAV delivers speed, pitch and altitude targets, while the LNAN gives the autopilot roll and steering commands.

For example, the autopilot can be adjusted to keep the aircraft in a flat position. When the pilot moves the flight control, this is converted into electronic signals that are interpreted by the flight control computer (FCC) to set the actuators that move the flight control surfaces. In this case, the computer operates the primary flight control surface to control the trajectory of the modern aircraft, whether manned or unmanned, providing fine control and stability.

Modern flight systems include both advanced autopilot systems and traditional flight control interfaces where a computer controls flight controls surfaces such as rudders, ailerons and elevators to control flight movements (see Figure 2). Flight data from the computer on board an aircraft is analyzed by the pilot, along with input from the state of the aircraft, environmental factors and wind to manoeuvre the aircraft.

The input made by the pilot during the flight is captured by sensors and linked to the flight control computer. The flight control system is connected to actuators such as servos and motors that operate flight control indicators that provide the pilot with information and warnings about aircraft performance and the condition of the aircraft system. The flying wire system has various sensors that supply data to the computer and the computer in turn evaluates and analyzes it.

The two flight control computers take over the workload that a pilot with full automation such as autopilot, fine tuning and manual flight would assume. Pilots are trained to fly the plane and to handle things that autopilot can’t do, such as thinking about taxiing and landing, providing the automated system with information, including take-off and landing locations, so it can record routes and of course make cheesy jokes during the boarding process. The two computers fly the 737 maximum, and they have authority over all the key controls and throttles, meaning that a malfunction in a hurry could be catastrophic.

A flight management system (FMS) is a specialized computer system that automates a variety of flight tasks and reduces the workload of flight personnel to such an extent that modern civil aircraft no longer have a flight engineer or navigator on board. The FMS is a fundamental component of modern aircraft avionics. A complex computer matrix tells your airplane how to fly, including navigation, altitude, speed and thrust control, which forces the plane to move through the air.

A Flight Management System (FMS) is a multi-purpose computer for navigation, performance and aircraft operations that provides virtual data and operational harmony between the closed and open elements of flight, take-off, take-off and landing in front of the engine and engine shutdown. An FMS can be summarized as a dual system, consisting of a flight management computer (FMC) and a CDU (cross-talk bus).