Recently, the world's leading general aviation manufacturer Textron Aviation has just launched a new business aircraft with a propeller engine. It is said that this aircraft has many private aircraft comfort features, but only entry level The price, "only for sale" is $4.8 million.
It is reported that the aircraft is named Cessna Denali, claiming to have the largest cabin of its kind - can accommodate up to eight people - and its engine is powerful enough to fly directly from Los Angeles to Chicago or from New York to Miami.
On Monday (July 25, 2016) at the EAA AirVentures Air Show in Oshkosh, Wisconsin, Textron and GE Aviation jointly released the aircraft and demonstrated the cabin and engine of the aircraft at the show. model. The engine of this aircraft was developed by GE Aviation.
It is understood that this aircraft and engine have adopted a new design. For example, the GE engine replaced hundreds of different parts with a small amount of complex 3D printed titanium and steel metal parts. Moreover, although the engine is a turboprop type, GE uses a technology from a jet engine to increase the internal temperature and pressure of the compressor and turbine to achieve greater power. The pilot even feels that flying the plane is like flying a jet, and its engine and propeller are controlled by a single joystick.
The result is that the engine's fuel consumption is 20% lower than other similar engines, but the power is 10% higher. Jeff Immelt, Chairman and CEO of GE, commented: "This new machine will generate $40 billion in revenue in 25 years."
Michael Thacker, senior vice president of engineering at Textron, said he expects Cessna Denali's maiden voyage to take place in 2018, as testing for new aircraft typically takes a year. However, it is reported that the company has started pre-sale worldwide.
It is said that the origin of this new engine dates back to 2008, when GE Aviation purchased the legendary but small-scale Czech turboprop engine manufacturer Walter Aircraft Engines. At that time, American companies had not developed new propeller engines for decades. Pratt & Whitney Canada leads the market. GE is mainly focused on manufacturing engines for official, commercial and military aircraft, as well as helicopters.
Today, with the joint efforts of engineers in Prague and the United States, GE spent seven years developing an engine with a power output of up to 1,650 shafts, opening up a lucrative space for GE. Last fall, the world's largest propeller aircraft manufacturer, Textron Aviation, announced that it would use the new advanced turboprop (ATP) on its new aircraft, Cessna Denali.
In order to develop this new engine, engineers are constantly researching on the basis of Walter and GE turboprop engines, both of which have nearly 20 million hours of flight time and are used on as many as 30 different types of aircraft. . And they further added that their jet engine technology has more than 1 billion hours of flight time, but has never been used on turboprops of this size.
For example, the variable stator blades on the engine were originally developed by GE engineers and aviation legend Gerhard Neumann for supersonic jet engines. The new engine will also include 3D printed components, air-cooled turbine blades, and integrated propulsion control that integrates engine and propeller management into one system, which reduces pilot workload.
Brad Mottier is the head of the development of the new turboprop engine and he led the acquisition of Walter Aircraft Engines. According to him, on the whole, the new technology will improve the performance of the aircraft and extend the engine overhaul interval by more than 30%.
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