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Tech Briefs April 2018

2018-02-01
Multi-Domain Command and Control (MDC2) Changing the Face of Modern Warfare Loop Thermosyphons Gravity-Driven Two-Phase Cooling for the 21st Century CompactPCI Serial Space A New Embedded System Specification Takes on Extreme Environments Plain Bearings for Aerospace Applications Additive Manufacturing Materials for RF Components NASA CubeSats: Pushing the Boundaries of Technology Content Addressable Memory (CAM) Technologies for Big Data and Intelligent Electronics Enabled By Magneto-Electric Ternary CAM New associative memory approach based on the propagation of spikes provides ultra-low energy search operations. Natural DNA-Based Nonvolatile Resistive Switching Memory Reliable memory devices can be realized within a single macromolecule based on natural DNA.
Magazine

SAE Vehicle Electrification: February 11, 2014

2014-02-11
Inside the cell walls The high cost of lithium-ion batteries is a prison that has largely kept electric vehicles off the street; the keys to their release are more effective—but not more expensive—cell chemistries.
Magazine

SAE Vehicle Electrification 2012-12-18

2012-12-18
No more molecules! Companies continue to invest in new chemistries for EV batteries, but at least one company in the battery industry thinks it's time to halt the unending search for new chemical formulations and focus on driving down processing costs.
Magazine

SAE Vehicle Electrification 2012-10-25

2012-10-25
When fuel cells fly Emerging hydrogen and fuel-cell-based technologies are being developed for the future replacement of onboard electrical systems in more-electric or all-electric aircraft. Motor controls spin forward Improved power handling and software advances make electrified powertrains more competitive. Multiple controllers adds to EV complexity Model-based design has revolutionized the way products are developed, with design shifting from parts to the whole.
Magazine

SAE Vehicle Electrification 2012-06-26

2012-06-26
Argonne heats up Li-ion battery research The U.S. Department of Energy lab near Chicago is using federal stimulus money to dive deeper into lithium battery research. Lithium-ion battery industry moves forward From technology advances to manufacturing capacity expansions, the foundation of the lithium-ion battery industry is becoming stronger and more viable.
Magazine

SAE Vehicle Electrification 2011-05-25

2011-05-25
Prime time for batteries Forecasts very on how many, and when, electrified vehicles will hit the streets, but auto and battery makers are ramping up efforts like there's no tomorrow. In energy storage, materials matter Batteries being electrochemical devices, innovation and advances in chemistry and materials are key to what everyone agrees is the need for improved performance and life. Comparing thermal characteristics of Li-ion celss Most Li-ion battery suppliers require that the cell temperature be as uniform as possible to achieve optimal battery performance and avoid battery system failure. But some materials in Li-ion cells have low thermal stability. The world plugs into EVs As matters begin to settle in terms of connector types, charge-station makers are ramping up to meet the needs of a growing population of plug-in vehicles.
Magazine

SAE VEHICLE ELECTRIFICATION

2013-08-21
Lithium-ion refinement Even as high-profile fires create concern, battery and car makers accelerate their move toward lithium-ion technology with advances in cost, performance, and safety. NASA's quest for maximum efficiency As part of its hybrid body wing aircraft with turboelectric distributed propulsion system, NASA has proposed to use a superconducting and cryogenic electrical system to connect the electrical output of the generators to the motors.
Magazine

SAE VEHICLE ELECTRIFICATION

2013-10-25
BMW i3 was born electric The carbon-fiber-bodied city car is the German automaker's first series-production entry into the electric-vehicle space. High temperatures narrow material choices for electrified vehicles One of the biggest challenges confronting electric and hybrid-electric vehicle designers today is how to manage the high temperatures stemming from the electrical losses associated with high-power electronics.
Magazine

SAE Powertrain & Energy 2012-07-25

2012-07-25
The row about rare earths Rare-earth elements are key to applications as varied as traction motors, catalytic converters, and wind turbines, but high prices and supply shortages have the auto industry grappling with design changes and other alternatives.
Magazine

Momentum: February 2015

2015-02-02
Taking on the Valeo Innovation Challenge Two Canadian teams-the University of Ottawa and the University of Waterloo-finished in the top 3 among about 1,000 other universities from around the world in this challenge devoted to spurring innovative ideas for transportation. Colorado State University designs fuel-cell plug-in hybrid system Competing in the EcoCAR2 competition using a Chevrolet Malibu, the Colorado State team designed a system that features a 15-kW polymer electrolyte membrane fuel cell system, an 18.9-kW•h/177-kW lithium-ion battery, and a 145-kW motor. Cal State Fullerton combines art and engineering Team's submission on its Formula SAE car won first place in the second annual Generation Auto video contest organized in part by SAE International. Collaborative research project leads to potentially swarming VTOL UAVs The AVIGLE VTOL (vertical takeoff and landing) unmanned aerial vehicle was developed via collaboration by a variety of entities for a variety of applications.
Magazine

Momentum: February 2014

2014-02-01
Evaluation of heavy-vehicle aerodynamic drag In an attempt to achieve a balance between Reynolds number, model scale, and tunnel blockage issues, a 1:3 scale heavy-vehicle testing program has been initiated at the Monash University 1.4-MW wind tunnel. Validating performance suspension parts advances A forum at the 2013 SEMA Show discussed three approaches to ensure performance parts compliance with Federal Motor Vehicle Safety Standard 126. Panelists also explained how simulation data, and kinematics and compliance measurements, can improve performance parts design. Active safety starts in the pilot's seat Dassault Aviation's next-generation integrated digital avionics systems contribute to enhanced air safety in civil applications. Chevrolet ups the performance ante with MY2015 Corvette Z06 Stiffer-bodied sports car gains wind-aided performance with supercharging and downforce for faster lap times.
Magazine

Momentum, the Magazine for Student Members of SAE International 2012-10-31

2012-10-31
The Nano in retrospect A senior graduate student in the Department of Mechanical Engineering at the Indian Institute of Technology looks at the development of the world's cheapest car and its effect on Indian car users. A different riff on your basic two-seat electric car Markus Lienkamp, Chair of Automotive Engineering at the Technical University of Munich, is leading the Visio.M project, a German government-supported R&D effort to produce a low-cost, high-utility electric car that might attract the interest of the middle European mass market. Materials lead the way to vehicle mass reduction Reducing a vehicle's mass opens the door for a downsized engine and transmission, a lighter cradle and body structure, smaller wheels and brakes, as well as a weight-slimmed suspension. The start point for this ripple effect is materials.
Magazine

Momentum, the Magazine for Student Members of SAE International 2012-08-31

2012-08-31
ETS Baja parts failure analysis: Geared for success When the ETS Baja team had to withdraw from the Baja Auburn 2012 event due to abnormal gear failure, an extensive analysis was required to ensure that problems of this nature would not surface again. After some serious investigation, the conclusion of almost 30 hours of research was unexpected and proved surprisingly simple. Body and soul rule at 2012 Formula SAE Months before the Formula SAE Michigan competition in May, teams were hashing out product development decisions. The end-game was presenting a racecar that had the right stuff for earning high points in the challenge's vehicle design evaluation as well as the acceleration, skid pad, endurance, and autocross dynamic performance events.
Magazine

Momentum, the Magazine for Student Members of SAE International 2011-01-28

2011-01-28
Road to lab to math Embry-Riddle Aeronautical University students designed a biodiesel-fueled power-split extended range electric vehicle for the latest ecocar challenge. Deep (Orange) Dive Cu-icar teams with industry to complete a student-engineered and -designed extended- range EV. Trends impacting military and defense engineering Industry leaders discussed a number of pressing issues- ranging from the need for more young engineers to significantly compressed design cycles- at the recent SAE Commercial Vehicle Engineeering Congress. Shifting gears smoothly 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.
Magazine

Mobility Engineering: December 2015

2015-12-01
Uncertainty quantification The technique is a must for next-generation simulation tools. Oil-pump sizing Researchers from Hinduja Tech investigate options for low friction and power consumption. The future of Indian commercial aviation The growth in traffic that airport modernization has supported has also made a significant contribution to the local and national economies, while the improved infrastructure has been positive for the perception of India in the global market. Driving EVs toward lower cost The race ison to reduce battery and electric-drive systems cost while improving efficiency. Powering on Rolls-Royce's Chief Engineer discusses new technologies that inspire current R&D design and evaluation work as part of its strategic roadmap for future big commercial programs. HMIs extend beyond the cab Telematic functions are being integrated into multi-function user interfaces.
Magazine

MOBILITY ENGINEERING: Sept 2016

2016-09-01
Types of aircraft passenger-escape systems An overview of existing and potential new methods for assuring aircraft occupant safety. SAE Skill India Initiative: S2I2 A new SAEINDIA collaboration aims to help young engineers acquire "industry-ready" skills. A technology-driven sustainable-agriculture solution Pumping more air into the cylinder is key to solving the CAFE puzzle, and engineers are hard at work figuring out the best ways to do it with turbocharger and supercharger innovation. Rotorcraft icing computational tool development 3D printing machines can't be built fast enough In the additive-manufacturing world, the costs of components are dropping, the technology is becoming more reliable and parts are fabricated faster, allowing industries beyond aerospace to adopt additive technologies, says Oak Ridge Lab's Ryan Dehoff.
Magazine

MOBILITY ENGINEERING: June 2017

2017-06-01
Alternative fuels and challenges Automotive powertrain development: virtually-connected hardware co-simulation Functional Safety-progressing towards safer mobility Electric rockets and the future of satellite propulsion Achates powers toward production A potential ICE game-changer, the Achates OP engine is being tooled up for production at one OEM while a new 2.7-L triple for light-truck demonstrations enters the build phase. Engineering with simulation and data Companies are discovering new simulation techniques, especially optimization; the next step is to combine simulation with sensor data and predictive analytics to create even more robust off-highway equipment.
Magazine

Aerospace Engineering: November 5, 2014

2014-11-05
Adaptive trimming of composite parts Some of the techniques used in the Adaptive Manufacturing System are normal aerospace processes. The unique and enabling process is the scanning and adaptive trimming.
Magazine

Aerospace Engineering: January 15, 2014

2014-01-15
Active safety starts in the pilot's seat Dassault Aviation's next-generation integrated digital avionics systems contribute to enhanced air safety in civil applications.
Magazine

Aerospace Engineering 2012-11-14

2012-11-14
Gradually going green The number of commercial airplanes globally is expected to double by 2030, but will there be enough fuel to keep them flying? 57 channels and everything's on Radios handle more frequencies as well as visual inputs, forcing developers to employ many design strategies. Surmounting modeling pitfalls A look at software tools that aid in the efficient model-based design of next-generation energy-optimized aircraft. When fuel cells fly Emerging hydrogen and fuel-cell-based technologies are being developed for the future replacement of onboard electrical systems in more-electric or all-electric aircraft.
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