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Revitalizing the EMB 500 Amazonas project, a four-engine transport vehicle for short or unpaved routes, with 2.0 technology notes

Brazil is considering developing four-engine transport for short or unpaved routes on the route long known as the EMB 500 Amazon Project. Brazilian Air Force Commander, Air Brigade Lt. Antonio Carlos Moretti Bermdez, presented online images of the concept of the new light transport aircraft, a preliminary project with Embraer, during the Ministry of Defense’s National Defense Seminar.

The aircraft, named STOUT – Short Take Off Utility Transport, is conceptually hybrid as the project includes turbo engines and electric motors. It has to be robust, inexpensive and state-of-the-art. The new vector is intended to serve remote locations with short, narrow and unpaved runways and take into account various operational requirements, e.g. For example, moving cargo and personnel in jungle areas, reaching major airports in South America, dropping paratroopers and extracting pallets and transporting patients.

Some features of the aircraft are the ability to take off from a runway up to 1,200 meters with a maximum payload of at least 3 tons and to operate in an Amazon environment or the like. To some extent, and with very different means and even possibilities, the company is tied to an old project immediately after the Bandeirante in the 1970s, the Amazon (C-295) or the EMB-500.

The “Amazon”, projected around 1971 and twice the size of the announced new concept, envisaged the use of four Pratt & Whitney Canada PT-6A-40 turboprops with a tall wing configuration and a sturdy tricycle landing gear, similar to the Das was on the then famous C-115 “Buffalo”, with the main landing gear at the rear of the central engine nacelle, with a pressurized cabin that promised unsurpassed operational capabilities on short unpaved runways, a very common scenario in the northern region of Brazil and a rear loading ramp.

The “Amazonas” had initially planned three variants, one for the civil aviation market and two military variants, including one for the sea patrol.

If produced, it will be equipped with engines with an output of 850 hp each and could reach a top speed of 500 km / h, a maximum altitude of 6,090 meters and a flow speed of 176 km / h. In the transport / cargo version the seats would be foldable; The Amazon will not be pressurized during the attack, it will have wide doors and military seats; and in Patrol you have an extra fuel tank to go long distances. At that time, this possibility was widely publicized. Four years later, the Hug designers began creating another project, the CX, a rear-loading military aircraft, but with two or four jet engines. Perhaps some of this most likely translates into the now avant-garde KC-390. (Javier Bonilla)

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