Systems
The Avionics System of the NH90/MRH 90 consists of: the Core Avionics System, and the Mission System.The Core System provides all avionics functions and performance necessary to manage the basic aircraft capabilities. This encompasses the functions of monitoring and diagnosis of avionics and vehicle systems, control and display management, navigation and communication. The Mission System assures the management of the different mission-specific sensors, tactical communication and mission/flight planning functions.
Helicopter Platform
The MRH 90 is a single main rotor helicopter of the 10 tonnes class, powered by two engines. The engines installed on the MRH 90 are the RTM 322-01/9 supplied by Rolls Royce / Turbomeca. The helicopter has a full composite, crashworthy fuselage with a constant cross-section centre fuselage and significant crashworthiness capabilities (based on MIL-STD-1290A) giving protection up to 10 m/s (landing gear extended), and 7 m/s (landing gear retracted) up to 11 tonnes helicopter weight. The forward fuselage contains the cockpit with two crashworthy seats for pilot and copilot and a foldable crashworthy jump seat for an additional crew member.
The centre fuselage offers a spacious, unobstructed cabin with a sliding door on each side and a rear ramp. The cabin allows the installation of 20 crashworthy troop seats and, alternatively, the installation of up to 12 stretchers. The Flight Control System (FCS) of the MRH90 is based on a redundant Fly-by-Wire (FBW) system with no mechanical back-up. It provides the MRH90 with enhanced manoeuvrability and keeps the crew work load acceptable at any time during the mission.
Ramp
The Rear Ramp is located aft of the cabin and is part of the rear fuselage. It is electrically actuated.
The main characteristics of the Rear Ramp are:
- Length 1.584 mm
- End flap 503 mm
- Width 1.780 mm
- Ramp floor load 100 N/cm 2
- Ramp to withstand 200 kg on its first third in closed position
- 130 kg to be dropped within defined flight envelope