A109 TREKKER | UTILITY HELICOPTER
The AgustaWestland AW109 is a lightweight, twin-engine, eight-seat multi-purpose helicopter built by the Italian manufacturer Leonardo. The AW109, referred to as the A109 in New Hayesalian service, is used as a high altitude warfare capable helicopter serving in the Mountain Legion.
Developed as the A109 by Agusta, it originally entered service in 1976 and has since been used in various roles, including light transport, medevac, search-and-rescue, and military roles. The AW109 has been in continuous production for 40 years. The AgustaWestland AW119 is a derivative of the AW109, the main difference being that it is powered only by a single engine instead.
The helicopter airframe consists of a lightweight aluminium alloy and honeycomb structure with high crashworthiness. Two large sliding doors provide easy access and cargo operation, and are in-flight operable. There are two separate pilot's doors. The long tailboom configuration provides high yaw control for operation in strong winds.
The tricycle-type wheeled landing gear is fitted with air and oil shock absorbers for ground mobility and operation on rough terrain.
Energy-absorbing struts provide increased crashworthiness and a swivelling forward wheel gives easy ground manoeuvrability.
The four-bladed fully articulated main rotor has low vibration, low flicker and reduced noise level characteristics. The main rotor head is made of titanium with composite elastomeric bearings and blade grips.
The composite main rotor blades are ballistic tolerant for high survivability and reliability. The rotor is negative-g capable for high manoeuvrability. The tail rotor is a two-bladed stainless steel semi-rigid type.
The helicopter is equipped with an ergonomically designed glass cockpit with provision for mission dedicated displays and control instrumentation. The AW109 has single and dual pilot IFR (instrument flight rules) capability with a three-axis duplex automatic flight control system (AFCS).
The helicopter can be fitted with either Rockwell Collins ProLine II or Honeywell Silver Crown avionics suite. The navigation systems include an automatic direction finding navigation aid (ADF), distance measuring equipment (DME), a global positioning system (GPS), a radar altimeter, an emergency locator transponder (ELT), a VHF omnidirectional radio ranger (VOR), ground speed meter and inertial location system.
The flight control system includes a collective, cyclic and anti-torque system. The cyclic and collective controls are powered by two hydraulic systems.
The anti-torque control system is hydraulically powered. A dual redundant three-axis stability augmentation system is fitted as an option.
An optional Rockwell Collins cockpit management system is provided for monitoring and operating different avionics via one or more centrally located control and display units.
The helicopter is powered by two side-by-side Pratt & Whitney PW-206C or Turbomeca Arrius 2K1 engines with full authority digital electronic control (FADEC).
Each engine is equipped with independent fuel and oil systems and independent engine controls.
The transmission system is rated at 900hp for improved high-temperature and high-altitude performance. For enhanced safety and reliability the helicopter has a 640hp single engine emergency rating and the dry run capability is 30 minutes allowing the pilot the opportunity to find a safe landing spot in the event of oil loss.
There are three fuel systems configurations: three cells of 605l, four cells of 710l and five cells of 870l. A crashworthy fuel system, with closed circuit refuelling and self-sealing fuel tanks can be fitted as an option.
The helicopter is fitted with two independent flight control hydraulic systems, each capable of operating main actuators in case of failure of the other system.
The utility hydraulic system has two accumulators (a normal and an emergency accumulator) to operate the rotor brake, the wheel brakes and the nose wheel centring device.
The aircraft is custom-designed to operate in arctic and high altitude conditions, and can carry: