When vehicles start handling multiple aspects of driving, electronic controls won’t always rely solely on input from onboard sensors. Often, antennas will point skyward to bring in information from GPS satellites and telematic systems.
NASA and Aerojet Rocketdyne have successfully completed a series of hot-fire tests on an advanced rocket-engine thrust chamber assembly using copper alloy additive manufacturing technology. Full-scale demonstration is the next step in the technology’s development path.
The use of lead in engine bearings for light-duty vehicles was banned in the European Union from July 1, 2011, bringing widespread changes in coatings. Although heavy-duty engines have not yet been subject to similar legislation, Federal-Mogul believes that it is only a matter of time before they are.
Dry drilling of composite-Ti stack-ups via CO2 avoids the problems associated with liquid coolants used in fuselage hole drilling, while delivering benefits in productivity, tool life, and hole quality.
A widely used material for lightning strike protection of CFRP structures within the aerospace industry is expanded metal foil (EMF). An issue with EMF is micro cracking of the paint, which can result in corrosion of the metal foil and subsequent loss of conductivity. Boeing researchers examined the issues of stress and displacement in the composite structure layup, which contribute to paint cracking caused by aircraft thermal cycling.
Bridgestone Commercial Solutions has launched the Bridgestone R244 all-position steer radial tire. The new tire meets the demands of dump trucks and concrete mixer truck fleets that spend a higher percentage of their miles in on-highway use.
Topcon Positioning Group launched in 2013 a new web portal, Sitelink3D.net, designed specifically for general construction and engineering companies. The subscription web-based service—accessible via computer, tablet, or smartphone—is a real-time visualization and communications tool that allows users to access jobsite status, create new or update jobsite parameters, and view movement of machines on the job.
Concerns about airborne diseases and flu pandemics coupled with increasing passenger concerns about environmental conditions are prompting some aircraft designers to take a closer look at ventilation systems. In many instances, improvements in air quality and cleanliness are being expedited by using design tools such as computational fluid dynamics (CFD).