Helicopter laser radar
The Helicopter Laser Radar ( HELLAS for short , German helicopter laser radar ) is an obstacle warning system for helicopters .
General
The system was developed by the Defense & Security division of EADS (now Cassidian ), from the associated Defense Electronics division . It is used to enable the pilot in the helicopter to display obstacles optically on a monitor in the cockpit as well as acoustically, even in poor weather conditions ( IMC ) . 50 such systems are currently in use worldwide.
technology
The unit for the light wave radar ( lidar ) is mounted on the underside of the fuselage of the helicopter and sends a pulsed laser with a wavelength of 1.5 micrometers in the direction of flight. The scanning range is limited to 32 by 32 degrees. When the laser hits an object, the beam is reflected and analyzed in the evaluation unit. Over a distance of 600 meters and at speeds of up to 330 km / h, both the topography of a site and obstacles such as B. cables and high-voltage lines up to telephone lines with a thickness of only one centimeter.
The HELLAS system can be used on a wide range of helicopters in the civil and military sectors. In Germany it is used in the helicopters of the Federal Police. In particular, the civil defense helicopters that are flown by Federal Police pilots significantly increase safety, as they land for rescue missions in unknown terrain away from paved landing areas (Christoph 2, 3, 4, 7, 9, 12, 13, 14, 17 , 29, 34 and 35).
Web links
- Information on the website of the manufacturer cassidian (accessed on March 26, 2012)
Individual evidence
- ↑ Obstacle warning system from EADS Defense & Security increases flight safety for Slovenian police helicopters ( page no longer available , search in web archives ) Info: The link was automatically marked as defective. Please check the link according to the instructions and then remove this notice. . German Maritime Competence Network, November 9, 2009, accessed on May 31, 2010.
- ^ Peter Weidenhammer: Aviation . In: sueddeutsche.de. March 15, 2006, p. 2, accessed May 31, 2010.
