LED Technology - Articles and news items
Issue 6 2015 • 27 November 2015 • Stephanie Bolt and Jimmy Low, Adelaide Airport
LED technology has fast become a proven and reliable replacement for interior, landside and airfield lighting. As Adelaide Airport’s Stephanie Bolt, Environment Manager, and Jimmy Low, Projects and Engineering Manager explain, LED technology has become a preferred option at Adelaide Airport for select lighting upgrades, not only as a way of achieving carbon reduction targets, but to enhance aviation safety and operational efficiency outcomes...
Issue 2 2014 • 16 April 2014 • Jean Paul Freyssinier, Senior Research Scientist & Adjunct Assistant Professor, Lighting Research Center, Renesselaer Polytechnic Institute
Jean Paul Freyssinier provides a detailed summary of the Lighting Research Center – Rensselaer Polytechnic Institute’s work on understanding the useful life of airfield LED luminaires...
Issue 6 2012 • 7 December 2012 • Peter Chalmers, Lead Engineer at Glasgow Airport and Ian Stuart, Lead Engineer at Gatwick Airport
Writing for this magazine (‘Light-Emitting Diode airfield lighting systems’, International Airport Review, Issue 5, 2012), John D. Bullough, Senior Scientist at the Lighting Research Center at Rensselaer Polytechnic Institute commented that Light Emitting Diode (LED) airfield lighting was increasingly being used due to the “potential for this technology to produce substantial savings in terms of maintenance and cost.”In the United Kingdom, both north and south of the Scottish border, LED airfield lighting is becoming more and more commonplace amongst the nation’s airports, which are keen to take advantage of these benefits. Ian Sharp, Lead Engineer at Gatwick Airport, in South East England mirrors Bullough’s view that the technology is highly efficient and superior to the airports’ previous lighting programme of tungsten/halogen fittings: “One of the advant - ages of LED lighting is it lasts longer, with an excess of 50,000 hours or over seven years, whereby tungsten-halogen lamps typically last 2,000 to 5,000,” Sharp says.
Issue 1 2012 • 7 February 2012 • Steve Thurston, Head of Planning and Development, Southampton Airport
Southampton Airport’s vision to become ‘Europe’s leading regional airport’ has provided the motivation for a number of innovate investments in recent years. With a couple of UK firsts amongst the developments, including being the first UK airport to have solar powered LED runway guard lighting, the regional airport with the big ideas is set to continue trend setting in 2012.For International Airport Review, Steve Thurston, Head of Planning and Development at Southampton Airport talks about solar powered LED runway guard lights, and the catalytic effect their success has had on the airport’s further development.As the number of aircraft and vehicle movements increased within the aerodrome over the years, regular reviews of signals, signs and markings were undertaken. In Autumn 2009, Steve and his team began researching options for runway guard lights and were keen to explore the latest technology relating to sustainable products.
Issue 6 2011 • 8 December 2011 • Jennifer Taylor, Lighting Research Centre, Rensselaer Polytechnic Institute, Troy, N.Y.
In the past two decades, the LED (light-emitting diode) has advanced to the point where it is now considered a key lighting technology, not only for its potential to save energy, reduce carbon emissions, and have a long service life, but also for its ability to be ‘tuned’ for optimal visual perception. For airfield lighting applications, technology performance and perception are equally important. In terms of technology performance, energy savings is a significant feature, but so too are the durability and longevity of the lighting system, which may have to operate under extreme weather conditions. In terms of visual perception, a lighting system’s light output, intensity, spectral distribution, and spatial and temporal beam distributions all affect the system’s salience and a pilot’s ability to perceive the light.Because LED light sources – semiconductors that emit photons – are inherently different from incandescent light sources, their performance and perception do not match those of incandescent lamps. Therefore, before LED lighting can replace incandescent lighting on airfields, two steps must be taken. First, it is crucial to determine whether LED systems can provide equal or greater technology per - formance and visual perception, in order to ensure safety, optimal life-cycle cost savings, and maintenance schedules. This step involves multiple levels of research, both in the laboratory and in the field, and should be conducted for many different types of airfield lighting applications and light source colours. Second, airfield lighting standards must be reviewed and changed as necessary to accommodate LED lighting systems, since existing standards were written with incandescent technology in mind. This step may involve changing fixture design requirements, such as thermal management system components or allowable light source colour boundaries and intensity levels, per research findings.