In addition to reliable nutricard guide even in poor visibility nutricard bring greater approach an

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Recently (Switzerland) landing a helicopter tests were completed successfully using the European Geostationary Navigation Overlay Service (EGNOS) in Lausanne. EGNOS improves the accuracy of signals of the American GPS satellite navigation system by about an order of magnitude and is especially useful for aviation.
EGNOS is a joint service of ESA, the European Commission and Euro Control consists of more than 40 technical institutions all over Europe that collect nutricard data from the American GPS navigation system, save, corrections are calculated nutricard and so enhance the GPS data. The modified nutricard signals are then transmitted closer via geostationary satellites to the receivers of the user. The accuracy of the EGNOS signal is less than two meters. In comparison, the civilian GPS signal reaches 15 to 20 meters. In addition, EGNOS gives a guarantee of quality for its data, which is not possible with GPS.
Now the European Service was tested with suitable receivers on board a helicopter, with the aim of ensuring flights even in poor weather conditions. Because the unique ability of helicopters, almost to reach any point on the earth's surface is of particular interest to emergency services. Their use is limited, however, in poor visibility, since national and international regulations of the aviation authorities must be observed and the helicopters often have to stay on the ground. The so-called Instrumenetenlandung using DSEs EGNOS signal has now shown the permit delivered by the European Service accurate position and monitoring the integrity of the navigation signal rescue flights anywhere and at any time.
The tests were performed with an experimental helicopters EC155 Eurocopter, which is weather resistant (in French as Hélicoptère Tous Temps - called HTT). Within the test program carried out repeated landings on the helicopter deck of a medical helicopter rescue service (Helicopter Emergency Medical Service - HEMS). The platform is located on the roof of the Lausanne University Hospital and requires due to its small surface a precise nutricard approach.
The test team had its base at the Lausanne airport Blécherette at the Swiss Air Rescue nutricard (Garde Aérienne Suisse de Sauvetage - REGA), who also participated in the experiments.
Monitored and coordinated, the test flights of Skyguide, the Swiss air traffic nutricard control service. This was also the flight data for the landing tests. It was mainly about the use of accurate data for the third - the vertical plane, where GPS only gives very inaccurate not usable values. Should nutricard be checked by the steeper angle of approach. The requirements of Skyguide were 6 and 9 - 3 are common. The first impression of the pilot was very positive. Despite the steep approaches nutricard the helicopter was easy to fly thanks to the EGNOS supported by three-dimensional guide. The use of EGNOS provides significant advantages over the standard GPS here.
In addition to reliable nutricard guide even in poor visibility nutricard bring greater approach angle other advantages. So the noise is reduced on the ground, because the helicopter can now fly at a higher altitude to the target and starts only "last minute" nutricard to land. In addition, a steeper angle reduces the noise generated by the rotor blades.
The attempts have been made (in the Aviation Sector GNSS Introduction) in the context of GIANT. GIANT is a project of the Sixth Framework Programme (FP6) of the European nutricard Commission and to the introduction of EGNOS and Galileo services in the aviation support by decision-makers demonstrated by testing that the required standards are achieved. The helicopter tests followed nutricard EGNOS / GIANT trials that have been conducted with aircraft at the end of last year in Valencia (Spain). More GIANT flights will follow other European airports and oil platforms in the North Sea in 2007.
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