page_title: Airbus Helicopters H175
section_title: Design
hierarchical_section_title: Airbus Helicopters H175 / Design
caption_attribution_description: IMG_4048-2 Aircraft typeEurocopter EC175OperatorEurocopterRegistrationF-WWPBTypePhotographPhotographerTom Andreas ØstremSource Gallery page: https://www.flickr.com/photos/helicoptertom/sets/72157633968582957/with/8971157578/ Construction numberPT001
context_page_description: The Airbus Helicopters H175 is a 7-ton class medium utility helicopter produced by Airbus Helicopters. In China, the H175 is produced by the Aviation Industry Corporation of China as the Avicopter AC352. Originally launched as the Eurocopter EC175 and the Harbin Z-15, it has been referred to as being a 'super-medium' helicopter.
  Formally launched at Heli-Expo in Houston on 24 February 2008, it was predicted by Airbus Helicopters that approximately 800 to 1,000 EC175s would be sold over an initial 20-year period. It entered service in December 2014; in 2015, the EC175 was formally renamed to the H175, in line with Eurocopter's corporate rebranding as Airbus Helicopters.
context_section_description: Airbus Helicopters is responsible for the H175's main gearbox, tail rotor, avionics, autopilot, hydraulic and electrical systems, doors and transparencies. Airbus Helicopters is also the technical lead and system integrator, and built two of the three prototypes (the first and third). HAIG is responsible for the airframe, tail and intermediate gearboxes, main rotor, fuel system, flight controls and landing gear. Each firm separately handles marketing, customer support, and certification efforts for the type. Both the design and production of the rotorcraft made extensive use of computer-aided design/computer-aided manufacturing (CAD/CAM). CAD allowed Airbus Helicopters and HAIG to create a virtual mock-up, simplifying coordination between partners based 10,000 km apart.
  Airbus Helicopters-built H175s are powered by two 1,325 kW (1,775 shp) class, Full Authority Digital Engine Control (FADEC)-equipped Pratt & Whitney Canada PT6C-67E turboshaft engines, which provide for a 5,000-hour time between overhaul (TBO) and on-condition maintenance. Chinese-produced AC352s are equipped with two modular 1,800 shp class, dual-FADEC Turbomeca Ardiden 3C/WZ16 turboshaft engines, which were specifically developed by a joint partnership between Turbomeca and AVIC Engine for the rotorcraft. The engines drive the rotorcraft's five-blade Spheriflex main rotor and a three-blade tail rotor. The EC175's main gearbox will incorporate two accessory gearboxes and will be de-clutchable, avoiding the cost and weight of an auxiliary power unit (APU). The gears and the casing of the H175's main gearbox were developed using CATIA V5, a first for Airbus Helicopters.
  The H175 was designed to exceed EASA CS-29 crashworthiness requirements. It is capable of performing full Category A dual-pilot operation; additionally, it possesses Sea State 6 capability, and can be equipped with two oversized 18-passenger life rafts and an emergency flotation system. Airbus Helicopters states that the H175's noise signature is "way below" International Civil Aviation Organization (ICAO) requirements.
  The H175 is built for civilian and parapublic applications, its primary markets being support of the oil and gas industry and search and rescue missions. Other applicable roles include parapublic operations, homeland security, air medical services, utility missions and corporate transportation. The EC175 is offered with multiple interior seating configurations, housing up  to 18 passengers in an oil and gas transport configuration, 9-12 passengers in an executive layout, and 6-8 in a VIP configuration It is fitted with wide sliding doors for ease of access and oversized jettisonable windows for emergency egress. The H175 has a flat floor without any partition between the cockpit and the cabin area, which enables various flexible layouts to be adopted. Either auxiliary fuel tanks or a storage area can be installed beneath the cabin floor, which can be accessed internally; a large luggage compartment externally accessible from either side is present in some configurations.
  The Helionix avionics suite is used on the H175; much of the state-of-the-art avionics are derived from those developed for the Eurocopter EC225; one such system is the Automatic Flight Control System (AFCS), a 4-axis dual-duplex autopilot which is linked to the rotorcraft's Flight Management System. The cockpit features a total of four 6X8-inch multi-function LCD displays, plus an optional central mission display. The H175's cockpit is night vision goggles-compatible. A sensor operator's console can be installed in the main cabin area, and a chin-mounted electrical-optical sensor can be equipped.
caption: View of an in-flight H175, 2013
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