AIMS-AERO

LEDDY is an airfield lighting system designed for use in VMC (Visual Meteorological Conditions) for Operations under VFR (Visual Flight Rules). No lighting is required during daytime as the conventional markings and other visual cues are sufficient to provide guidance to the pilot in VMC.

LEDDY will be used to provide adequate lighting during twilight time at dawn and dusk as well as during the night though the lights will then be dimmed to avoid dazzling the pilot.

In the absence of ICAO specifications for such use, AIMS has calculated the required light intensities based on the Allard’s Law, the same used by ICAO to determine high intensity systems (see the Aerodrome Design Manual Part 4).

Our goal is to provide the pilot with adequate guidance during approach and landing considering the meteorological visibility, time of the day and approach speeds. The values obtained by calculations, and achieved by LEDDY, are similar or actually superior to those specified by the CAP 168 in the UK or the FAA in the USA.

The electrical supply to the lights is provided by a DCR (Direct Current Regulator) and series cables like with conventional airfield lighting systems but in much lower voltages.
The series cables are supplied with factory molded plugs and receptacle to enable a fast and easy installation. Alternately, standard connector-kits can be used.Each light is equipped with a secondary cord ending on a molded plug.

To ensure a fail safe installation, each light connection to the series cable is made by means of a special Y-shaped cable section equipped also with factory molded plugs and receptacle to avoid any polarity problem.

The total power consumption is so low that an array of photovoltaic panels of about 4 m² is all what is needed to make the LEDDY a totally autonomous system at latitudes between 45°N and 45°S.