Viewing 1 to 30 of 577
Technical Paper
Software's role continues to expand Design teams use different technologies to create new software and link systems together. Emissions regulations and engine complexity With the European Commission announcing a Stage V criteria emissions regulation for off-highway, scheduled to phase-in as earlly as 2019, there will be an end to a brief era of harmonized new-vehicle regulations. Will this affect an already complex engine development process? Evaluating thermal design of construction vehicles CFD simulation is used to evaluate two critical areas that address challenging thermal issues: electronic control units and hot air recirculation.
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.
Stanford goes solar down under Team takes sixth place in Bridgestone World Solar Challenge to cap a rigorous two-year design and development program. Taking the lead Being in charge of an SAE Student Chapter entails everything from organizing meetings to issuing 'nastygrams.' A winning video from a winning Collegiate Design Series team The defending champion of the Formula SAE Michigan competition, Oregon State University, has found another way to win. SAE U.K. Section co-hosts lecture series 'starring' NASA engineer/expert Dr. Ravi Margasahayam of NASA is the engineer responsible for ensuring payload safety for the Space Shuttle and the International Space Station.
Giving the blind the freedom to drive A Virginia Tech student team answers a call to action by the National Federation of the Blind's Jernigan Institute. 'Ultimate Youthmobile' of 2030 At the 2009 LA Auto Show, California designers envision the future. BMW's six-cylinder motorcycle Concept points to possible production bike. Modeling and simulation put emphasis on early planning The shift to model-based design and simulation is changing the way aircraft are designed, shifting the focus to the early phases of development. Early planning is critical for success, as is establishing techniques that ensure that files move freely between various work teams.
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.
Alternative fuels heat up This is a rich time for combustion researchers. The need for better fuel efficiency and improved emissions has never been greater. New software model to help engine makers meet diesel soot standards Simulation enables engineers to predict particulate formation early in the design process.
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.
Improving heavy-duty engine component efficiencies Cylinder deactivation can improve fuel economy by using a reduced number of cylinders that operate at higher loads and thermal efficiency, while other cylinders are turned off, when the engine operates at partial load conditions. A switching roller finger follower is one of the technologies that help make it work. Pumping up hydraulic capabilities Electrohydraulic advances keep coming as distributed electronics flex their muscle. Tracking the trends in commercial vehicle communications Industry insiders at Molex offer what they think the future may hold for heavy-duty components in 24/7 communications systems. ADAS system validation It is crucial that different advanced driver assistance systems functionalities interact seamlessly with existing electronic control unit (ECU) networks.
Technical Paper
The authors advance for discussion some important problems in the construction of airplanes for military use in this country. The functions of military airplanes designed for strategical and tactical reconnaissance, control of artillery fire and for pursuit are outlined. Problems in construction with reference to the two-propeller system, methods of reducing vibration, application of starting motors, details of the gasoline supply-system, metal construction for airplanes, flexible piping, desirable characteristics of mufflers, shock absorbers, landing gear, fire safety-devices, control of cooling-water temperature, variable camber wings, variable pitch propellers and propeller stresses, are all given consideration. The paper is concluded with suggestions for improvement in design relating to the use of bearing shims, the rigidity of crankcase castings, interchangeability of parts and better detail construction in the oiling, ignition, fuel supply and cooling systems.
Simulating lightweight vehicles operating on discrete terrain Researchers characterize the mobility of autonomous reconnaissance vehicles on terrain considered to be deformable, and represented as a collection of bodies of spherical shape.
Unmanned Aerial Systems Deploying Next-Generation UAS Platforms with 3U VPX Unmanned Ground Vehicles UGVs - On the Cutting Edge of Thermal Management Unmanned Surface/Underwater Vehicles Controlling the Seas - Introducing a New Concept in Autonomous Surface/Underwater Vehicles Robotics Connectivity in Robotic Systems
I was promised flying cars Though flying cars seem unlikely to become reality anytime soon, driverless vehicle technology is improving more quickly than you might expect. Quantum leaps toward world solar car title Armed with a dramatically lighter and aerodynamically cleaner racecar, the University of Michigan team likes its chances down under in the 2011 World Solar Challenge. Designing an aerodynamic undertray for a Formula style racecar Using CFD analysis, a master's student discovers an effective design for the undertray of a Formula SAE racecar. Hypersonic possibilities When it comes to reviving high-speed air travel, it all comes down to propulsion, propulsion, propulsion.
Formula SAE-a winners again Monash University took the top spot in the 2010 Formula SAE-Australasia student competition for the second year in a row. Dual-fuel lab engines achieve high efficiencies, low emissions Experiments conducted by researchers at the University of Wisconsin-Madison as well as at Oak Ridge National laboratory demonstrate that partial blending of two fuels in the cylinder can promote a more ideal combustion process. Detroit motor show Small and efficient cars stole the show at the recent North American International auto show. 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.
The buzz about electric aircraft Emissions limits force the aviation industry to study hybrid and battery-electric propulsion systems. Car-to-X marks the secure beamforming spot Intelligent networking of cars and infrastructure promises a future of enhanced active safety and traffic efficiency, though as an open and decentralized system, car-to-X is exposed to various attacks against security and driver's privacy. Talking big A look at factors that should be considered by OEMs when implementing a telematics solution in the heavy-duty on- and off-highway mobile equipment markets.
Inductive approach An engineering professor from Ryerson uses MapleSim to introduce more exploratory methods of teaching. Monash University scores fourth Formula SAE-A win The Monash University Formula SAE-A team demonstrated its dominance by winning its fourth consecutive Australasian event in Melbourne last December. Audi Urban Intelligent Assist The three-year joint effort between Audi AG, the Volkswagen Group Electronics Research Laboratory (ERL) in Belmont, CA, the University of Southern California, the University of California at Berkeley, and the University of California at San Diego aimed at improving drivers' information and decision-making capabilities. Hovering aircraft programs The AW609 tiltrotor and the X3 compound helicopter offer different technology solutions to the challenge of achieving higher speeds and higher-quality point-to-point air transport.
Technical Paper
R. Cruse Lewis
The time is now for shipper and air carrier to maximize profitability through extensive employment of the air freight concept. Better understanding by both parties of the Total Materials Management theory, i.e., the tradeoffs to air cost, is the key to vastly improved utilization of The Flying Truck.
Technical Paper
J. W. Clyne
Manufacturers and operators both must contend with the problems encountered in the new, but developing, commercial helicopter operation. These problems manifest themselves mainly in low financial returns. This paper concerns itself with the manufacturer’s point of view of what lies ahead. Design, maintenance, and performance are considered on the basis of the future of VTOL operation.
Technical Paper
Peter Wright
Abstract Large helicopters are being used for many types of construction work in the United States. Some of the helicopters that are used for this work and their operational problems are described in detail. Examples of jobs done for the air conditioning companies, electric utilities, ski lifts, and structural steel contractors are given. With proper planning and design and with much larger helicopters coming on the market soon, a tremendous increase in construction by helicopter will take place.
Technical Paper
Frank J. Verginia
This paper discusses air cargo growth and development over the past several years and the use of 747s in intermodal air freight. Today's air freight system is developing into a highly automated future system which also involves trucks, containers, air freight terminals, and control systems necessary for overnight dock-to-dock shipper service. This development is explained and so are the effects, economically and otherwise, of intermodal air cargo on a worldwide air freight system.
Technical Paper
Bruce J. Webster
This paper provides a statistical breakdown of U.S.A. helicopter accidents by cause/factor, phase of operation, and, percent of material failure/malfunction, cause/factor accidents by major component or system for the years 1977, 1978, and 1979. A listing of specific recurring malfunctions and their primary causes, plus possible solutions are provided. A listing of important industry requirements to improve the helicopter safety record is included.
Technical Paper
Raymond J. Drago
The design of any gearing system is a difficult, multifaceted process. When the system includes bevel gearing, the process is further complicated by the complex nature of the bevel gears themselves. In most cases, the design is based on an evaluation of the ratio required for the gear set, the overall envelope geometry, and the calculation of bending and contact stresses for the gear set to determine its load capacity. There are, however, a great many other parameters which must be addressed if the resultant gear system is to be truly optimum. A considerable body of data related to the optimal design of bevel gears has been developed by the aerospace gear design community in general and by the helicopter community in particular. This paper provides a summary of just a few design guidelines based on these data in an effort to provide some guidance in the design of bevel gearing so that maximum capacity may be obtained.
Technical Paper
Paul R. Langston
Technical Paper
E. P. Gaudette
The use of high performance Laminated Elastomeric Bearings is offered as an alternative to conventional roller element or metallic contact bushings for continuous load support and motion control. The discussion includes the design considerations necessary for proper application, as well as the Engineering, Manufacturing, and Quality Assurance inherent within the technology today. Major advantages include no required lubrication, significantly different spring rates between elastomer compression and shear planes, positive sealing, and reduced maintenance costs.
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