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Additive manufacturing, virtual reality add to aerospace design repertoire

One of the biggest issues in bringing forward new designs is the length of time that it takes to agree to a new specification, research and evaluate the alternative features and configurations, and then embark on a development program that will take the design to flight testing and ultimately operational service.

Phase 2 GHG driver for advanced technology, alternative fuels

EPA's Christopher Grundler and expert panelists at COMVEC 2016 offered their insights on technology pathways and challenges to meeting the recently issued final greenhouse-gas standards affecting model year 2021-2027 medium- and heavy-duty on-highway vehicles.

Noise and vibration-resistant rotary latch

Southco, Inc. has launched the stainless steel R4-10 rotary latch with integrated bumper that can be combined with the company’s line of mechanical and electronic actuators and cables for a complete rotary latching system.

Four-quadrant voltage drop simulator

EM Test now offers the VDS 200Q Series, a four-quadrant voltage drop simulator that can source and sink current using a programmed voltage in both positive and negative polarities.

Boeing’s ecoDemonstrator 757 used to get the bugs out

Boeing is in the midst of several months of flights with its ecoDemonstrator 757 in a first-round effort to evaluate new technologies in 2015 that are expected to reduce environmental effects on natural laminar flow as a way to improve aerodynamic efficiency while reducing noise and carbon emissions.

Custom wheel rims

Wheel rim components made of 3/4-in steel plate in diameters to 40 in (1016 mm) and larger for use on tractors and other off-highway vehicles are fabricated by Acme Metal Spinning. Available in quantities of five to a few hundred or more, these components are fabricated using Acme’s advanced metal spinning processes.

Predicting cavitation in fuel pumps

Liquid ring pumps are used in aircraft fuel systems in conjunction with main impeller pumps and are used for priming the pump system as well as to remove fuel vapor and air from the fuel.

Boeing examines expanded metal foils for lightning protection of composite structures

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.