07 June 2015

A350 includes a new Satellite Navigation System for precision landing approaches.

“For the first time on the A350 we have a new system called the Satellite Landing System,” explained Jean-Francois Bousquie, an Airbus flight test engineer focused on avionics.

“This allows pilots to perform precision landing approaches guided by EGNOS (or its US equivalent WAAS), offering vertical guidance down to a minimum of 60 m before the pilot sights the ground to make the go/no-go decision on the final landing descent.”

The European Geostationary Navigation Overlay System, or EGNOS, can provide horizontal and vertical guidance to anywhere in Europe, without the need for any additional airport-hosted infrastructure.

The largest international airports use Instrument Landing System (ILS) infrastructure, with radio beams offering a truly precision landing capability, including the ability to ‘autoland’ when visibility is at its worst.
Even with larger airports, in many cases only their busiest runways are equipped with ILS, because it is expensive to install and maintain.

So EGNOS offers a cost-effective way of safely increasing use of remaining runways, boosting the flexibility of any given airport.
“By reducing the value of the ‘minima’ – the lowest safely guided altitude – for non-ILSrunways, EGNOS increases the efficiency and safety of aircraft landings,” added Mr Bousquie.

“Every qualified commercial airline pilot has been trained on ILS, to follow its radio beam. So theSatellite Landing System works by having them follow the same type of cues as much as possible on a ILS ‘lookalike’ basis, employing all available navigation data including EGNOS.”
A pair of onboard Multi Mode Receivers manage the A350’s radio sensors, compute the deviations and ensure interface with display and guidance systems.

All pictures. Source: pst1.pixnet.net

Based on the article “New Airbus A350 comes EGNOS-capable” published in spacenewsfeed.co.uk

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