Display:

Results

Viewing 151 to 180 of 19755
2014-09-16
Technical Paper
2014-01-2275
Karl-Erik Neumann, Robert Reno
Abstract The utilization of new materials and tightening of desired tolerances has driven the advancement of Practical and Portable Automated Machining. Increased demand in volume within the aerospace industry not only requires minimizing the amount of manual operations, but also applying automation inside existing manual fixtures. In the past, manual labor, with drastic limitations on achievable accuracies, has been utilized in areas that machine tools cannot either access or the limited amount of work does not justify the expense of additional machines. Assemblies requiring critical hole alignment or drilling through stack materials often are difficult to achieve using manual operations. The solution is a practical and very portable machining unit that is small enough to fit into otherwise difficult areas and is lightweight enough to be either moved into position by small machines or quickly disassembled/assembled with each subassembly capable of being positioned manually.
2014-09-16
Journal Article
2014-01-2270
Jason Rediger, Joseph Malcomb, Craig Sylvester
Abstract A new portable floor drilling machine, the 767AFDE, has been designed with a focus on increased reach and speed, ease-of-use, and minimal weight. A 13-foot wide drilling span allows consolidation of 767 section 45 floor drilling into a single swath. A custom CNC interface simplifies machine operations and troubleshooting. Four servo-driven, air-cooled spindles allow high rate drilling through titanium and aluminum. An aluminum space frame optimized for high stiffness/weight ratio allows high speed operation while minimizing aircraft floor deflection. Bridge track tooling interfaces between the machine and the aircraft grid. A vacuum system, offline calibration plate, and transportation dolly complete the cell.
2014-09-16
Technical Paper
2014-01-2267
George Nicholas Bullen
Abstract Rapid advances in cloud-based computing, robotics and smart sensors, multi-modal modeling and simulation, and advanced production are transforming modern manufacturing. The shift toward smaller runs on custom-designed products favors agile and adaptable workplaces that can compete in the global economy. This paper and presentation will describe the advances in Digital Manufacturing that provides the backbone to tighten integration and interoperability of design methods interlinked with advanced manufacturing technologies and agile business practices. The digital tapestry that seamlessly connects computer design tools, modeling and simulation, intelligent machines and sensors, additive manufacturing, manufacturing methods, and post-delivery services to shorten the time and cost between idea generation and first successful product-in-hand will be illustrated.
2014-09-16
Journal Article
2014-01-2273
James Cunov, Charles J. Habermann
Abstract The ever increasing use of composites for aircraft components presents opportunities for new ways to process these parts. There are myriad benefits for use of composites in achieving aircraft performance goals. However, composites come with unique challenges as well. Some of these challenges impact the ability to produce accurate parts. Traditionally, such parts have been trimmed only while clamped in dedicated rigid tools that secure the part in the nominal shape. This results in significant investment in tooling design, production, maintenance, storage and, handling. As an alternative, PaR has developed its Adaptive Manufacturing System that incorporates a Robotic Fixture and Precision Motion Machine with an Integrated Process Head. The Robotic Fixture allows the entire family of parts to be managed with one fixture that remains within the machine footprint.
2014-09-16
Journal Article
2014-01-2271
Ryan Haldimann, Daniel Orf
Abstract In an attempt to be more flexible and cost effective, Aerospace Manufacturers have increasingly chosen to adapt a manufacturing style which borrows heavily from the Automotive industry. To facilitate this change in methodologies a system for locating robots has been developed which utilizes cameras for both locating and guidance of a mobile platform for a robot with drilling and fastening end effector.
2014-09-16
Journal Article
2014-01-2274
Riley HansonSmith, Alan Merkley
Abstract The Boeing Company is striving to improve quality and reduce defects and injuries through the implementation of lightweight “Right Sized” automated drill and fasten equipment. This has lead to the factory adopting Boeing developed and supplier built flex track drill and countersink machines for drilling fuselage circumferential joins, wing panel to spar and wing splice stringers. The natural evolution of this technology is the addition of fastener installation to enable One Up Assembly. The critical component of One Up Assembly is keeping the joint squeezed tightly together to prevent burrs and debris at the interface. Traditionally this is done by two-sided machines providing concentric clamp up around the hole while it is being drilled. It was proposed that for stiff structure, the joint could be held together by beginning adjacent to a tack fastener, and assemble the joint sequentially using the adjacent hole clamp up from the previous hole to keep the joint clamped up.
2014-09-16
Journal Article
2014-01-2272
Todd Rudberg, Justin Nielson, Mike Henscheid, Joshua Cemenska
Abstract The Automated Fiber Placement (AFP) machine layup run time in large scale AFP layup cells consumes approximately 30% of the entire part build time. Consequentially, further reductions to the run time of the AFP machine part programs result in small improvements to the overall cycle time. This document discusses how Electroimpact's integrated system and cell design reduces the overall cycle time by reducing the time spent on non-machine processes.
2014-09-16
Standard
ARP169B
This SAE Aerospace Recommended Practice (ARP) defines a method of numbering aricraft engine cylinders.
2014-09-12
Article
High-performance metamaterial antennas could be compact, lightweight, conformable, and stealthy.
2014-09-11
Standard
AS4228C
Scope is unavailable.
2014-09-11
Standard
AMS4361
This specification covers an aluminum alloy in the form of plate products from 1.000 to 6.000 inches (152.40 mm) in thickness. 7065-T7451 may be used in aerospace applications requiring high strength and fracture toughness, high resistance to stress-corrosion cracking and good resistance to exfoliation corrosion, but usage is not limited to such applications.
2014-09-11
Standard
AMS4351
This specification covers an aluminum alloy in the form of plate products from from 1.000 to 6.000 inches (152.40 mm) in thickness. 7065-T7651 may be used in aerospace applications requiring high strength and good fracture toughness, good resistance to stress-corrosion cracking and to exfoliation corrosion, but usage is not limited to such applications.
2014-09-09
Standard
J176_201409
This SAE Standard applies to off-road self-propelled work machines as categorized in SAE J1116. Fast fill fueling typically applies to self-propelled machines with a fuel capacity over 380 L, although fast fill fueling can be used on machines with smaller fuel capacity.
2014-09-09
WIP Standard
ARP1917B
This Aerospace Recommended Practice (ARP) clarifies terms used in Aerospace materials and process specifications. The terms clarified in this ARP are not intended to supersede those terms for which clarification is already provided in existing specifications.
2014-09-09
WIP Standard
J78
This SAE Standard covers the dimensional and general specifications, including performance requirements, for carbon steel self-drilling tapping screws suitable for use in general applications. It is the objective of this document to insure that carbon steel self-drilling tapping screws, by meeting the mechanical and performance requirements specified, shall drill a hole and form or cut mating threads in materials into which they are driven without deforming their own thread and without breaking during assembly. Appendix A is included to provide a recommended technique for measuring the case depth on the screws.
2014-09-08
Article
The Walmart Advanced Vehicle Experience is a prototype tractor-trailer developed to demonstrate the possibilities of future transport, and the truck is not the only place where innovation reigns. The trailer body is built almost exclusively with carbon fiber, and it incorporates other technologies such as advanced adhesives and low-profile LED lighting.
2014-09-05
Article
Days before Tesla on Sept. 4 announced it has selected Nevada as the state in which it will build a large "Gigafactory' battery plant, Lux Research opined that the savings in lithium-ion battery costs owing to high-volume efficiencies will not be as much as the automaker expects it to be.
2014-09-05
Standard
AS291F
This standard provides a method of applying surface roughness, waviness and lay control. The data included herein also covers the method of applying surface roughness symbols and related designations to drawings and specifications of parts when applicable. This standard is based on the Arithmetical Average (AA) method of instrumentation. Data compiled are based on current manufacturing practices. It also includes a summary of data published in the latest issue of the American Standards Association publication ASA B46.1.
2014-09-05
Standard
AMS3217/7A
This specification covers a high strength fluorosilicone (FVMQ) rubber stock in the form of molded test slabs.
2014-09-03
WIP Standard
AMEC14AC
This appendix establishes the procedures, guidelines and requirements for qualification and quenching of parts produced from the alloys listed in AMS2759/2, Table 2 using inert pressure gas in vacuum furnaces.
2014-09-01
Journal Article
2014-01-9002
Zachary A. Collier, Steve Walters, Dan DiMase, Jeffrey M. Keisler, Igor Linkov
Counterfeit electronic components entering into critical infrastructure and applications through the global supply chain threaten the economy and national security. In response to the growing threat from counterfeits, the Society of Automotive Engineers G-19 Committee is developing AS6171. This aerospace standard is focused on testing facilities with a goal of standardizing the process of counterfeit detection. An integral part of the standard is a semi-quantitative risk assessment method. This method assigns risk scores to electronic components based on a number of relevant criteria, and places the components into one of five risk tier levels corresponding to an appropriate level of laboratory testing to ensure the authenticity of the component. In this way, the methodology aims at standardizing the risk assessment process and bases the identified risk as guidance for commensurate testing protocols.
2014-08-26
Standard
AS7351A
Scope is unavailable.
2014-08-26
Standard
AS6462A
This set of criteria shall be utilized by accredited Certification Bodies (CBs) to establish compliance, and grant certification to AS5553A, Aerospace Standard; Counterfeit Electronic Parts; Avoidance, Detection, Mitigation, and Disposition.
2014-08-25
Article
Coriolis Composites and SAFRAN Aircelle worked together on a thrust reverser component demonstrator made with carbon-fiber-reinforced plastic (CFRP) material and an AFP process. This component is an inner fixed structure, made of two monolithic carbon skins and a core.
2014-08-25
Standard
AMS6378G
This specification covers a free-machining, low-alloy steel in the form of round bars 3.50 inches (88.9 mm) and under in nominal diameter.
2014-08-22
Standard
AMS6324J
This specification covers an aircraft-quality, low-alloy steel in the form of bars, forgings, mechanical tubing, and forging stock.
Viewing 151 to 180 of 19755

Filter