AlliedSignal is to team with Sikorsky to develop a new version of its enhanced ground proximity warning system (EGPWS), giving helicopter pilots the ability to 'see beyond the horizon' and navigate their way around hidden obstacles.
It marks the first time that EGPWS technology has been refined specifically to meet the needs of the rotary wing market.
Until now EGPWS has been the domain of commercial airlines, but, if successful, the move would be a major step forward for helicopter operations, which by definition include a high percentage of low-level flying.
The helicopter system will provide high resolution terrain data at locations away from airports and contains a number of unique features designed to keep the aircraft clear of hidden dangers such as transmission wires and towers.
Included in the package will be a digital, moving navigation map to replace the traditional paper charts in the cockpit, showing the helicopter's height above terrain, with colour or shading contrasts.
Crucially, wires and other obstructions that lie ahead in the flight plan will be overlaid on the map and marked conspicuously.
The EGPWS will also provide visible and audible warnings of approaching high terrain or obstacles.
A Sikorsky S-76 will be used to flight test the system. AlliedSignal says it is aiming for certification in the third quarter of 2000.
"EGPWS has reduced the chances of airplanes colliding with terrain or other obstacles and we plan to use this technology now to benefit helicopter operators," says Frank Daly, president of Allied Signal Avionics and Lighting.
EGPWS works by comparing aircraft position from a GPS system with its built-in terrain database, to generate a map-like display of terrain and obstacles surrounding the aircraft.
Source: Flight Daily News
