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new business jet designs have fly-by-wire flight control systems.

New York (AirGuideBusiness - Business & Industry Features) The trend on the business jets is toward increasing complexity that makes pilotsa jobs easier. Most clean-sheet new business jet designs have fly-by-wire flight control systems, witness Embraeras Legacy 450/500, Gulfstreamas G500/G600 and Bombardieras Global 7000/8000. For those who say that fly-by-wire is suited only to larger aircraft, the Bell 525, although a relatively heavy helicopter, shows that modern flight controls make sense in smaller packages. Thales, which is developing the fly-by-wire rudder control system for Textron Aviationas Longitude, doesnat see any reason why fly-by-wire wonat be beneficial for smaller business jets, too. While the weight savings arenat as significant as for larger aircraft, they are a factor. But more important are the safety benefits of fly-by-wire. Flight envelope protections built into fly-by-wire systems can help get pilots out of trouble and could eventually eliminate the need for some upset recovery training, although pilots will always need training in the fundamentals of flying, especially how to recover a fly-by-wire aircraft in a mode where protections have been removed. Recent crashes involving fly-by-wire airliners show that further training is an urgent necessity. As more OEMs gain experience in fly-by-wire and as initial development costs are covered by new aircraft, they will gradually see the benefits of moving the technology into smaller aircraft. Another benefit of fly-by-wire is that it enables designers to extract even more performance from future airframes. One way to do this is by eliminating traditional flight control surfaces and replacing them with flexible portions of wings and horizontal and vertical stabilizers. Winglet manufacturer Aviation Partners has teamed with FlexSys in a joint venture to market the FlexFoil variable-geometry flight control surface technology. FlexSys has been testing it on a GIII, in which the flaps were replaced with FlexFoil seamless continuous surface units that can morph from -9 degrees to 40 degrees. The surfaces could eventually be used for mission-adaptive profiling, where operators can adapt the control surfaces for the shape best suited to the phase of flight. For the near future, the pinnacle of aerodynamic design will likely be a supersonic business jet, and the Aerion-Airbus team has steadily built engineering and financial capabilities that could lead to the first Aerion AS2 entering service in 2023. Fractional-share operator Flexjet is slated to become one of the first operators to place the AS2 into service, having signed a firm order for 20 of the SSBJs. One development that seems fully established is flat-floor cabins for midsize and larger business jets. And while ultra-long-range jets have commanded significant market share, Textron Aviationas recently announced Citation Hemisphere is going to test the market with relatively long range (4,500 nm) and a 102-inch-wide cabin (the same width as the Falcon 5X, but less range than the 5Xas 5,200 nm). Time will tell how this new market niche develops


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Publication:AirGuide Business
Date:Dec 30, 2015
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