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Truck and Bus Aerodynamic Device and Concept Terminology

Truck and Bus Aerodynamics and Fuel Economy Committee
  • Ground Vehicle Standard
  • J2971_201908
  • Current
Published 2019-08-02 by SAE International in United States

This SAE J2971 Recommended Practice describes a standard naming convention of aerodynamic devices and technologies used to control aerodynamic forces on truck and buses weighing more than 10000 pounds (including trailers).

 
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Copper Wire, Bare, High Purity

AMS D Nonferrous Alloys Committee
  • Aerospace Material Specification
  • AMS4700E
  • Current
Published 2019-08-01 by SAE International in United States

This specification covers one type of copper in the form of wire.

 
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How Miniaturized Distributed Modular Architecture Advances Avionics Design

Aerospace & Defense Technology: August 2019

  • Magazine Article
  • 19AERP08_01
Published 2019-08-01 by SAE International in United States

Most of today's collision-avoidance, in-flight-entertainment (IFE), air-to-ground-communications, and other avionics systems employ electronics packaging based on the Aeronautics Radio INC (ARINC) 600 standard. Compared to the older ARINC 404 standard dating from the 1970s that defined “black box” enclosures and racks within aircraft, ARINC 600 specified a Modular Concept Unit (MCU) - the basic building block module for avionics. An ARINC 600 metal enclosure can hold up to 12 MCUs, allowing a lot of computing power to be placed in a centralized “box.” By making it possible to run numerous applications over a real-time network, ARINC 600 enabled “next generation” integrated modular avionics (IMA).

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Microturbine Propulsion for UAVs

Aerospace & Defense Technology: August 2019

  • Magazine Article
  • 19AERP08_03
Published 2019-08-01 by SAE International in United States

Seventy years ago, military aviation moved from reciprocating engines to vastly more reliable turbo jets and turboprops. Shortly after, the commercial air transport industry followed suit, enabling modern air transport. Today, virtually all large aircraft rely on turbine propulsion, yet small aircraft, both manned and unmanned, have not exploited the advantages of turbines for propulsion.

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BIG DATA, BIG BENEFITS

SAE Truck & Off-Highway Engineering: August 2019

Terry Costlow
  • Magazine Article
  • 19TOFHP08_02
Published 2019-08-01 by SAE International in United States

Data mining helps users and equipment developers use data from on-vehicle sensors to work more efficiently.

The huge volumes of data created by on-vehicle systems are being mined to bring a range of benefits to vehicle operators and fleet managers. Predictive maintenance is becoming more common, while data mining is helping OEM design and manufacturing teams enhance their programs.

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Critical Communications Break Out of the Analog Mold

Aerospace & Defense Technology: August 2019

  • Magazine Article
  • 19AERP08_05
Published 2019-08-01 by SAE International in United States

Military and public safety communications increase digital and data capabilities without sacrificing reliability or interoperability.

Once firmly rooted in its analog origins, critical communications is now steadily evolving to provide enhanced situational awareness. The latest public safety and military communications (MilCom) radios are more versatile and reliable, supporting ad-hoc networks to improve or enable connectivity. With higher-data-rate capabilities, critical communications solutions can send and receive high-resolution images, videos, and other types of data-intensive content. At the same time, they provide higher-quality voice communications while maintaining security. To ensure communications and interoperability, they still can support analog communications as a failsafe. These myriad capabilities are possible through the ongoing adoption of new technologies, ranging from digital public safety standards and modulation formats, to technologies like wireless local area networking (WLAN) and Long Term Evolution (LTE).

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EDITORIAL: AI, ADAS & AVs-oh my!

SAE Truck & Off-Highway Engineering: August 2019

Editor-in-Chief-Ryan Gehm
  • Magazine Article
  • 19TOFHP08_06
Published 2019-08-01 by SAE International in United States

Active safety and advanced driver-assistance systems (ADAS), along with increasingly sophisticated artificial intelligence (AI) platforms-are the building blocks essential to climbing the SAE levels of automation. Acquisitions, partnerships and advanced-technology demonstrations in these areas are occurring at a dizzying rate, as the industry has set its sights on Level 4 (L4) automated vehicles (AVs).

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Feasibility Study of Portable Water Desalination Systems for Water Contingencies at Remote Navy Installations

Aerospace & Defense Technology: August 2019

  • Magazine Article
  • 19AERP08_07
Published 2019-08-01 by SAE International in United States

Navy explores ways to ensure an uninterrupted supply of potable water at remote installations.

The Department of the Navy (DON) has major installations located around the world. Twenty-two main installations operate outside the continental United States (OCONUS) and rely on on-base water processing facilities. These facilities serve a total population of 71,000 military and civilian personnel, and the water plants have a total production capacity of 15.7 million gallons per day.

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Hybrid Ultra-Low VOC and Non-HAP Rain Erosion Coatings

Aerospace & Defense Technology: August 2019

  • Magazine Article
  • 19AERP08_12
Published 2019-08-01 by SAE International in United States

Developing a rapid-curing rain erosion coating based on a unique glycidyl carbamate (GC) hybrid resin chemistry that offers rapid reactivity and adhesion combined with the erosion, flexibility, weathering and mechanical properties of polyurethane systems.

Numerous military aircraft and shipboard surfaces, such as radomes, antennas, gun shields, wing leading edges, and helicopter blade leading edges, are coated with a specialized erosion-resistant protective coating possessing strict performance requirements. These protective coatings must provide excellent rain erosion resistance, superior mechanical properties, good adhesion to the substrate and meet a host of other metrics outlined in MIL-PRF-32239 and SAE AMS-C- 83231A.

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DSD helps ‘balance the books’ for buying electric truck technology

SAE Truck & Off-Highway Engineering: August 2019

Stuart Birch
  • Magazine Article
  • 19TOFHP08_08
Published 2019-08-01 by SAE International in United States

In the discerning world of truck operations, where procurement decisions must be based on total cost of ownership (TCO), the case for moving to environmentally sustainable electric powertrains for heavy commercial vehicles that demand high initial capital outlay and bring concerns over range limitations, yet lower running costs, is a constant conundrum. But it may be solved via a new simulation system that matches powertrain characteristics to specific applications of an operator to achieve “significant” cost savings without compromising required range.

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