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Avionics go to war Advanced helmet sight systems are being designed to help the situational awareness of those pilots who actually still fly aircraft, while also being seamlessly integrated with the aircraft itself. Model military engine behavior While the concept of a variable cycle engine is not new, recent advances in engine architecture technology suggest that adding a second bypass stream to a traditional turbofan can provide significant benefits. Alternative seals for alternative fuels When considering seal compatibility an aircraft from traditional jet fuel to a synthetic fuel presents an interesting technical challenge that has both financial and practical considerations, especially for aircraft that are already in service.

Lithium-ion batteries take their seat Cessna introduced a Li-ion main battery on its Citation CJ4 that minimized electrical and avionics architecture changes and enabled continued compatibility with existing Ni-Cd and LA battery options.

Rhenium on the rise One of the rarest elements in the Earth's crust, rhenium featurse unique properties that make it desirable for various industries, including applications in aerospace such as jet engines.

Simulation-driven design System-level design automation technologies can be used to increase the specification quality and accelerate the design process to gain competitive advantage.

Global engineering challenges grow For the past thirty years Boeing and Airbus have ruled the commercial skies, developing and supplying thousands of airplanes seating from 120 to over 500 passengers. Emerging markets may make the skies a bit more crowded.

Materials become design, design becoems function Once things you could hold in your hand, materials have become more design ideas than entities, and the designs themselves are transforming into operational activity. The next steps in flight A look at sero engine and assembly developments as commercial airframe and engine manufacturers begin the biggest battle of all-for next-generation short-haul jet aircraft sales. NextGen Today and tomorrow The FAA has reached a major milestone on the Next Generation Air Transportation System initiative to modernize America's National Airspace System. Stacking the material deck for the 787 Combinations such as composites and titanium being used in future aircraft programs can be very challenging when drilling holes during manufacturing and assembly operations.

Composite simulation helps fill gaps There is no turning back from using carbon-fiber reinforced plastics and other composite materials for aerospace parts. Simulation providers are finding new opportunities to help reduce cost and improve efficiencies in designing and making aerospace parts made of composites. Shifting gears smoothly Ric Kleine, a 30-year veteran of Cummins Inc. and former SAE Commercial Vehicle VP, seeks continuity over change as he moves into SAE's driver's seat.

More electric, more safe Advanced health-management technologies detect faults in early stages, providing an accurate health state and predicting the time-to-failures with high confidence.

New materials-new tests material development calls for new testing techniques to be used, aided by key service suppliers.

Tolling for large, light composite parts Aerospace engineers use carbon-fiber composites to create larger, unified parts to replace many smaller parts fastened together. As composite parts get larger, tooling to make them is evolving.

Toward cockpit 3.0 Avionics developments further revolutionize the commercial cockpit environment.

Aviation biofuel effort ramps up The key to a vibrant aviation biofuels market is a reliable and plentiful supply of nonpetroleum feedstocks.

Powering the future To achieve sales of more than 1000 engines a full two years ahead of the first flight of the aircraft it is being built to power gives an indication ofthe high customer expectations from the most advanced in a long line of engines from Rolls-Royce.

The open rotor engine in the 21st century After consideration in the 1980s, the open rotor turbine engine for aircraft is given another chance. Will today's engineering tools make it more viable this time?

New resins, new attributes The past decade has seen an explosion of new engineering plastics that have, inch by inch, penetrated into tougher and tougher aerospace applications.

Automation leads advances in aerospace composites usage Increased productivity is the focus of today's automation for composites made of carbon-fiber reinforced plastics.

Taking a deeper look at NDT Rapid adoption of composties in aircraft has accelerated the need for newer and faster nondestructive testing methodologies. We look at some of the issues.

Inside information on lightweight materials While plenty of engineering effort is being made to change materials on the outside, there is as much going on with aircraft interiors to cut weight.

More technology, less fuel Engine makers use several techniques to improve efficiency, cut emissions.