Future Air Navigation System
The Future Air Navigation System ( FANS - system for air navigation the future) is a standard that was developed by the air transport industry to make better use of the air space and accommodate more aircraft. There are several generations of FANS standards. Starting with simple automation processes to futuristic approaches.
In its simplest form using FANS aircraft GPS to determine their position. The GPS has this older systems to determine the position - which is based on gyroscopes, inertial navigation - replaced. The aircraft then sends its particular means of GPS position ( on VHF or satellite communications - SATCOM ).
The FANS standard requires outside the VHF range, the use of satellite communications ( Inmarsat, Iridium). Thus, the air traffic control on the position of the aircraft is accurately informed, because the radar detection is not as accurate and not comprehensive global ( oceans, large deserts ) is.
Overall, this is a security and the danger of collisions in the air increases (English midair collision ) is reduced. Before the introduction of the FANS pilots had by giving their position report verbally - over oceans usually by means of long-wave radio, as only long wave on the line of sight also allows a radio link. The position signal by longwave air traffic control must have a greater safety distance between the planes ( Graduation - separation ) comply, as the inertial navigation system is inaccurate and at times very difficult noise on the long wave an understanding.
Consequently, the graduation gap has reduced thanks to FANS. This in turn can (usually the "ideal route" ) fly at their desired route the aircraft much closer.
This " best route " is typically on the great circle ( the shortest distance between two points on the Earth ) and takes into account the current wind, to raise the back -wind component, or at least to avoid a strong headwind.
Although the FANS concept of the ICAO originates, it was first introduced by the major aircraft manufacturers Boeing and Airbus. Boeing FANS implementation is called FANS -1. The FANS implementation of Airbus called FANS -A. Further improvements of their FANS -A then called Airbus FANS -A .
Both aircraft manufacturers are working on FANS - developments. Boeing under the name FANS -2 and Airbus under the name FANS -B.
From the air navigation service providers in different countries different soil systems have been developed to work with the Boeing and Airbus FANS ( also referred to as FANS -1 / A).
Since these initial FANS systems, the ICAO has promoted the standardization work on FANS and published as a set of standards - (CNS / ATM / - Communication, Navigation and Surveillance / Air Traffic Management).
It is expected that some Boeing and Airbus in the future expansion of their proprietary FANS implementations to the current ICAO standard. As a vision of the future flight plans should be updated dynamically to reflect new information, such as the currently modified wind, to be considered.
Milestones
A with the Future Air Navigation System ( FANS ) equipped Boeing Business Jet led on 24 May 2004 by the first transatlantic flight of a business aircraft with FANS. FANS has the oral need for communication between the crew and air traffic control greatly reduced. After a start in Gary, Indiana and a 4000 NM flight the plane landed in Geneva ( Switzerland ) - at the European Business Aviation Convention and Exhibition. The flight was part of the North Atlantic Traffic experimental program developed by the FANS Central Monitoring Agency ( FCMA ) is performed.
- Air navigation
- Air traffic control