Certification of the Embraer 170 regional jetliner, which is on display at Le Bourget - will represent a major milestone for Hamilton Sundstrand, which is supplying several key systems on the 170/190 aircraft family.

The 70-passenger aircraft, scheduled to enter service later this summer, represents the highest level of system integration responsibility ever taken on by Hamilton Sundstrand.

Among the key integrated systems are the auxiliary power unit, air management system, electric power generation/distribution system and high-lift actuation systems. The total value to Hamilton Sundstrand could exceed $1 billion over the life of the programme.

The aircraft family is the launch platform for Hamilton Sundstrand's 100-passenger EC100 air conditioning package and APS 2300 APU. The new air conditioning package is the smallest derivative of the company's patented condensing cycle air conditioning system family originally developed for the Boeing 777 and 767. The package forms the centerpiece of the most comprehensive air management system awarded by Brazilian aircraft manufacturer Embraer to a single supplier.


Hamilton Sundstrand Power Systems' APS 2300 is a completely new APU, specifically designed to meet the requirements of this new generation of large regional aircraft. The US Federal Aviation Administration awarded Technical Standard Order Authorisation (TSOA) for the APU on 6 May, 2003.

This APU is a new centerline engine incorporating a rotating assembly using the advanced compressor technology of the successful Boeing 717 and 737 APUs. Also used are a matched axial turbine system custom-designed by Pratt & Whitney Canada and a reverse flow effusion-cooled combustion system.

The APS 2300 also takes a technological step forward with such features as a permanent magnet starter/generator and electronic start controller, electric fuel pump and eductor-driven oil cooling system.

Hamilton Sundstrand is responsible for the complete design, manufacture and aircraft-system level certification of the electric system, comprising the primary, secondary and emergency power systems. The electric system is an integrated drive generator-based power generation, distribution and utility management system. It incorporates digital electronic air conditioning, engine bleed, cabin pressure and anti-ice control utility modules within its integrated modular electronics architecture.


Integrated modular electronics provide utility control of 12 systems, including the lighting, galley, hydraulic and fuel systems. This integration has eliminated more than 300lb (136kg), 400 components and nearly 8,000ft (2,440m) of wiring from the aircraft, while simplifying the aircraft's manufacturing and support.

A ram-air turbine (RAT) is the cornerstone of the emergency power generation system. In addition to the RAT-driven generator, power conversion and backup battery systems provide aircraft electrical power if main propulsion is lost.

In addition, the Embraer 170 is the next application of Hamilton Sundstrand's successful line of high-lift actuation systems. The company will supply the fully integrated Flap and Slat Actuation System. This system forms a part of the complete flight control system, which is being provided by a Honeywell, Parker Hannifin and Hamilton Sundstrand team.

Hamilton Sundstrand's capital investment to support new aircraft programs includes the recently developed 12,000-square-foot Integrated Systems Laboratory, which allows Hamilton Sundstrand to simulate an aircraft's entire pneumatic, hydraulic and electric power systems, to optimise a power subsystem at the aircraft level.

Source: Flight Daily News