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Building Multiple Resolution Modeling Systems Using the High-Level Architecture

Univ. of Central Florida-Mario Marin, Kyungeun Lee, Edgar Gutierrez, Luis Rabelo
University of Central Florida-Gene Lee, JAEHO KIM
  • Technical Paper
  • 2019-01-1917
To be published on 2019-09-16 by SAE International in United States
The modeling and simulation pyramid in defense states it clearly: Multi-Level modeling and simulation are required. Models and simulations are often classified by the US Department of Defense into four levels—campaign, mission, engagement, and engineering. Campaign simulation models are applied for evaluation; mission-level simulations to experiment with the integration of several macro agents; engagement simulations in engineered systems development; and engineering-level simulation models with a solid foundation in structural physics and components. Models operating at one level must be able to interact with models at another level. Therefore, the cure (“silver bullet”) is very clear: a comprehensive framework for Multiple Resolution Modeling (MRM) is needed. In this paper, we discuss our research about how to construct MRM environments. Also, the utilization of the High-Level Architecture (HLA) is explained and in particular, the processes of verification and validation in these composite models. Three implementations in the areas of aerospace, navy ships, and infantry combat are utilized to illustrate the MRM simulation concepts.
 
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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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Peridynamic Modeling

Aerospace & Defense Technology: August 2019

  • Magazine Article
  • 19AERP08_02
Published 2019-08-01 by SAE International in United States

An Alternative Approach to Analyzing Material Failure

A critical technology challenge for structural material applications in the aerospace and defense industries is to have a means for the reliable analysis of material damage and failure. Experimental structural assessments are typically expensive and often do not provide full information about coupled, multiscale damage processes. Computer-aided analysis has established itself as a useful tool for complementing experimental structural assessments. A comparative summary of current computer-aided approaches is presented in the accompanying table.

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Pathfinder Radar ISR and SAR Systems: Tactical Eyes for the Warfighter

Aerospace & Defense Technology: August 2019

  • Magazine Article
  • 19AERP08_06
Published 2019-08-01 by SAE International in United States

Sandia National Laboratories' (Albuquerque, NM) Radar Intelligence, Surveillance and Reconnaissance (ISR) systems enable a new product paradigm in radar capabilities and modalities. With the ability to shrink sensor size, increase resolution, raise image quality, and advance real-time onboard processing, Sandia has been producing next-generation systems for nearly three decades. Sandia specializes in the full system design of Synthetic Aperture Radar (SAR), Ground Moving Target Indicator (GMTI), target recognition, and other sensor systems for the Department of Defense, other government agencies, and industry partners.

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S400 Copper Media Interface Characteristics Over Extended Distances

AS-1A Avionic Networks Committee
  • Aerospace Standard
  • AS5643/1A
  • Current
Published 2019-07-09 by SAE International in United States
This SAE Aerospace Standard (AS) establishes guidelines for the use of IEEE-1394-2008 Beta (formerly IEEE-1394b) as a data bus network in military and aerospace vehicles. It encompasses the data bus cable and its interface electronics for a system utilizing S400 over copper medium over extended lengths. This document contains extensions/restrictions to “off-the-shelf” IEEE-1394 standards, and assumes that the reader already has a working knowledge of IEEE-1394. This document does not identify specific environmental requirements (electromagnetic compatibility, temperature, vibration, etc.); such requirements will be vehicle-specific and even LRU-specific. However, the hardware requirements and examples contained herein do address many of the environmental conditions that military and aerospace vehicles may experience. One should refer to the appropriate sections of MIL-STD-461E for their particular LRU, and utilize handbooks such as MIL-HDBK-454A and MIL-HDBK-5400 for guidance. This document is referred to as a “slash sheet” and accompanies the AS5643B base standard.
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Continuous Flow Oxygen Regulator

A-10 Aircraft Oxygen Equipment Committee
  • Aerospace Standard
  • AS1197B
  • Current
Published 2019-06-11 by SAE International in United States
This standard covers regulators of the following types: Type I - Automatic Continuous Flow Type II - Adjustable Continuous Flow Type III - Pre-Set Continuous Flow Class A - Cylinder Mounted Class B - Line Mounted
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Cable, Power, Electrical, Portable General Specification For

AE-8D Wire and Cable Committee
  • Aerospace Standard
  • AS5756B
  • Current
Published 2019-06-07 by SAE International in United States
This specification covers 600 V heavy duty, portable, power, single and multiconductor, electrical cable for severe flexing service (see detail specifications for voltage limitations). The AS5756 insulation system has been used in aerospace ground power applications using 115/200 V (phase to neutral) at 400 Hz AC. Verification of the suitability of this product for use in other electrical system configurations (600 V, etc.) is the responsibility of the user.
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NUT – SELF-LOCKING, CLINCH, SERRATED SHANK, 400 °C, DRY FILM COATED, UNS S66286, MJ THREAD, METRIC

E-25 General Standards for Aerospace and Propulsion Systems
  • Aerospace Standard
  • MA3274A
  • Current
Published 2019-06-03 by SAE International in United States
No Abstract Available.
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Coating Technology Enables Effective Missile Countermeasures

  • Magazine Article
  • TBMG-34530
Published 2019-06-01 by Tech Briefs Media Group in United States

Heat-seeking missiles have been in use against both rotorcraft and fixed wing aircraft since the mid-1950s, and countermeasures to deceive their guidance systems have been employed for nearly as long. Typically, countermeasures operate by generating a strong infrared signature which confuses the missile tracking system. At the heart of these systems is some form of powerful infrared emitting source. Often this source requires optical coating(s) to perform wavelength filtering needed for optimum operation. However, both the mechanical configuration of the thin film filter coatings used and the operating extremes to which they are subjected present challenges for the manufacturer.

 

Panoramic Thermal Imaging Technology

Aerospace & Defense Technology: June 2019

  • Magazine Article
  • 19AERP06_03
Published 2019-06-01 by SAE International in United States

A New Concept in Naval Defense

SPYNEL sensors are passive wide area surveillance systems with automatic intrusion detection and tracking capabilities. The 360° thermal sensors offer 24/7 situational awareness by detecting and tracking an unlimited number of targets in real time, on land, air and sea. HGH Infrared Systems recently won a multimillion contract from a leading shipyard, to equip three new warships with the latest generation of SPYNEL panoramic thermal cameras.

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