Navaids in Aviation

Topics: Global Positioning System, Navigation, Wide Area Augmentation System Pages: 3 (913 words) Published: April 10, 2005
How would pilots ever get around so easily without the help of navigation aides? Navigational aides have been around for almost as long as aircraft have been flying in the skies above us. The first navigation system was composted of just a high intensity-flashing beacon. These beacons were placed on the flight routes that were popularly flown in the mid 1920's. With more time more of these technologies that help us navigate the world will be even simpler than today. This paper will explain how some navigational aides work and how some of them came into existence. Flight Management Systems

Flight management systems are one of the best navaids in commercial aviation. The flight management system (FMS) is made up of four systems in an aircraft, the FMC (flight management computer), the autopilot and flight director, the auto throttle, and the IRS's. According to Boeing the FMS could be defined as, being capable of four dimensional area navigation (latitude, longitude, altitude, and time), while optimizing performance to achieve the most economical flight possible. The flight management system can give you gross weight of the aircraft, and the best speeds (i.e. holding, approach, climb, cruise, descent, etc…) by taking inputs from the fuel summation unit when it is given the zero fuel weight and the MACTOW (mean aerodynamic cord at takeoff weight). The position of the aircraft can also be determined by referencing the IRS, along with GPS and the radio position updating. Global Positioning Systems

GPS is a navigational aid that is satellite based. It is made up of a network of 24 satellites in orbit around the world. The first satellite was launched in 1978 and the last was put into orbit in 1994. Every 10 years another satellite is put into orbit because each satellite is made to last that amount of time. The system began as a military application but in the 1980's the government decided to make it available to everyone, anywhere, anytime. The system finds your...

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