Frigate Ecojet

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Frigate Ecojet
Frigate ecojet 1.jpg
Role wide-body medium haul civil aircraft
National origin Russian Federation
Manufacturer JSC "Russian Avia Consortium" Corp.

Frigate Ecojet (in Russian: Фрегат Экоджет, transliterated as Fregat Ekodzhet) is a program consisting in the development of a new wide-body medium haul civil aircraft using a new integral aerodynamic and design configuration. The project started in 1991 as Tu-304 under leadership of Valentin Klimov (then chief designer of Tupolev design bureau) and initially was projected to carry up to 500 passengers. Since 2004 the project is carried out by a new design bureau, instituted as the daughter company of Tupolev and headed by the elder Klimov, while the company is headed by Klimov's son, Alexandr Klimov.

The primary goal of the Frigate Ecojet program is the development of a range of new wide-body medium-haul aircraft based on a new, aerodynamic and structural design, which will be operational by 2018. The new aircraft's integrated efficiency is estimated to be 15-20% higher compared to the existing 2010 version of the aircraft.

The project is focused on the 3000–4000 km range segment of air transportation. The operation of wide-body aircraft is viewed[by whom?] as effective in this range. At the moment, more than 56% of wide-body aircraft flights have a range of 3000 km or less. In some regions of the world this share is much higher. Besides technological innovations, Frigate Ecojet is foreseen to have a significant economic advantage over competing wide-body airliners simply because it will be optimized for this flight range, while other wide-body airliners are designed for the requirements of long distance long-haul flights (including factors such as fuel capacity) which are in excess of the needs of shorter flights.[citation needed]

Technical characteristics[edit]

"Frigate Ecojet" fuselage cut-view
"Frigate Ecojet" cabin-view

The wide-body medium haul Frigate Ecojet aircraft is based on a fundamentally new, innovative aerodynamic and structural design. Currently the Frigate Ecojet project team is considering various engines from leading international suppliers, including Aviadvigatel PD-18R and the latest Rolls-Royce and Pratt & Whitney engines

A design solution for the new wide-body aircraft is the usage of cross-section oval fuselage configuration. The chosen form ensures minimal dimensions for the aircraft with 300-350 passengers in three cabins, three main aisles, no less than 500 mm (20 inches) wide and spaces between seats no less than 810 mm (32 inches). In an all-economy layout the number of seats can be increased to 400. The aircraft can accommodate 302 passengers in the basic three-class layout (business class, premium economy and economy). One of the advantages of the wide-body layout is the increased number of aisles between seating rows compared to narrow-body airliners, which should enable faster embarkation and de-boarding.

The lower deck’s two cargo bays can accommodate up to 20 LD-3 containers or cargo on 95*125 pallets.

Fuselage cross-section chosen for the Frigate Ecojet project has allowed the reduction of the aircraft’s wetted area by 4-14% per passenger (depending on the layout) compared to a modern wide-body aircraft like Boeing 777-200, Ilyushin 86, Ilyushin 96 and Airbus 340-300. The Frigate Ecojet program now incorporates a new structural design feature which allows the aircraft deck to be used as an additional means of absorbing excess pressure.

Main characteristics of Frigate Ecojet aircraft

Capacity 260 280 302 352
Payload, kg 24,700 26,600 28,690 33,440
Range, km 4,541 4,042 3,500 2,343
Mach number 0.8 0.8 0.8 0.8
Take-off weight, tons 123 123 123 123
Required runway for take-off, km 2.375 2.375 2.375 2.375
Required runway for landing, km 2.336 2.336 2.336 2.336

Rosaviaconsortium has cooperated with the Zhukovskiy Central Aerohydrodynamics Institute (TsAGI) from the beginning of the project. As a result, TsAGI has issued an approval of the Frigate EcoJet technical proposals, confirming the quality of the project. TsAGI’s conclusions state that the proposed configuration is feasible, with integrated efficiency 35% higher compared to modern aircraft. It was preceded by the research made by the project team and fine-tuning for the existing airline route networks.


External links[edit]

  1. Online Survey in Frames Frigate Ecojet Program Finalized
  2. Russian researchers study elliptical-fuselage 'EсoJet' concept (
  3. Rosaviaconsortium contracts IATA on the Frigate Ecojet program (EVA International )
  4. Ecojet promises economy with three aisles (