Glide Path Indicator

GPI - Glide Path Indicator

  • Fully redundant powerful light engines and separate motion units
  • Universal stabilized platform for multiple applications
  • Stabilizes at +/- 0,3° for roll/pitch up to 42°
  • Camera facing helicopter can be integrated in CCTV system as pan/tilt cam
  • Thermal camera for near field observation as option
  • Multisensor self-controlled status monitoring

The powerful GPI light beams enable the pilot to easily locate the helideck from a distance of approx. 5 nm and will guide the helicopter to a position above the landing area. The light beams consist of three different vertical sectors: A steady green sector in the center that indicates the correct approach angle of abt. 4°, a yellow/amber, slow flashing upper sector above the green sector and a red, fast flashing lower sector warning the pilot of a dangerously low approach angle.

The two fully redundant LED driven light beams are stabilized to +/- 0.3° using an internal motion sensor (Inertial Measurement Unit IMU) and powerful servo actuators to compensate up to +- 42° of roll and pitch motions, irrespective of the relevant helicopter approach course.

A high resolution camera with motorized zoom facing towards the approaching helicopter will assist visual surveillance of helideck landing operations. When not used as GPI, the camera can be integrated in the CCTV system and act as pan/tilt camera for additional observations, including infrared sensitivity.

The GPI has been tested for shock at 45g and is IP 66 certified.

System integrity and operational reliability is controlled by Optonaval´s internal electronics combining multiple sensors measuring temperature, humidity and electric current, providing 24/7 monitoring of the GPI´s status. In that respect, the GPI will show an upcoming malfunction before it actually fails. Easily exchangeable standard dry agent cartridges provide effective absorption of residual humidity. Nitrogen filling -as alternative mode of humidity control- is available as optional feature.