The Landing Period Designator (LPD) is a solid state landing aid system that is designed to reduce air and ship crew workload associated with aircraft launch and recovery operations on moving ship platforms by providing a clear, real time visual indication to the pilot of the optimum time to take off and land safely (i.e. the quiescent deck motion period or quiescent period prediction, QPP). In addition to reducing the risk of aircraft undercarriage or structural damage, LPD offers improved operational safety by minimising over deck hover time and provides increased tactical flexibility by expanding the aircraft operating and landing envelopes, regardless of the sea condition or the time of day or night.
LPD can also be incorporated directly into Unmanned Air Vehicle (UAV) control systems to ensure that automated UAV launch and recovery occurs during the most optimum and safest time period possible.
LPD works alongside the established aircraft landing procedures and after being extensively trialled by Navies worldwide, has been proved to offer a substantial increase in safety for ship board launch and recovery routines for both manned and unmanned air vehicles.
LPD supplies the real-time information concerning ship’s motion as a function of aircraft operational limits and measurement of ship’s pitch, roll, surge, sway, yaw and heave to the pilot and crew via a hangar mounted Pilot Information Display (PID), which indicates with clear symbols the current deck energy and the optimum opportunity to take off and/or land the aircraft.
MOTION REFERENCE UNIT
Industry leading and proven technology
Mounted underneath flight deck to provide the best possible heave measurement and avoid possible errors from long lever arms and ship
Real-time motion data transmitted directly to the LPD console
Based on AGI’s proven MFCR hardware
embedded LPD software to calculate and display the Energy Index (EI) and Ship Motion information to the Flight Control crew
Transmits the real-time EI data to the flight deck mounted Pilot Information Display
Status screen provides a Data Integrity summary and System Event log
PILOT INFORMATION DISPLAY (PID)
Mounted in an elevated position above the flight deck to ensure maximum visibility to the pilot whilst in the hover position
Utilises high brightness LED’s to convey the real time Energy Index symbol to the pilot
Optional additional AGI Wave-Off Light to ensure 360° visibility around the vessel