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Standard

Coolant Hose - Normal Service Type Convoluted, Wire Support Hose (Supplement to SAE J20 for Government Use Replacing Part of MS51008)

2018-03-04
CURRENT
J20/2_201803
This SAE Standard provides ordering information for any SAE 20R5 hose type (such as “EC, HT, LT” or combination thereof.) This is a wire-reinforced hose for coolant circulating systems of automotive type engines. This hose consists of a convoluted section with plain ends. The hose shall contain a wire helix or helices in the convoluted section. It is a supplement for Government use but may be used by others.
Standard

Emergency Warning Device and Emergency Warning Device Protective Container

1989-12-01
HISTORICAL
J774_198912
This SAE Standard provides test procedures and performance requirements for emergency warning devices (triangular shape), without self-contained energy sources, that are designed to be carried in motor vehicles and used to warn approaching traffic of the presence of a stopped vehicle, except for devices designed to be permanently affixed to the vehicle, and provides test procedures and performance requirements for protective containers for such emergency warning devices.
Standard

Lubricating Oil, Internal Combustion Engine, Military Combat/Tactical Service

2013-02-25
CURRENT
J2359_201302
This SAE Standard covers engine military oils suitable for lubrication of reciprocating internal combustion engines of both spark-ignition and compression-ignition types, and for power transmission fluid applications in combat/tactical service equipment (see 7.1). This document is equivalent to MIL-PRF-2104G when all requirements are met.
Training / Education

Global 8D

Anytime
Global 8D (G8D) is a disciplined process developed by Ford Motor Company to help product development and manufacturing engineers identify and solve problems. Solving problems results in efficient, as well as effective, resolution to 'root causes' of customer satisfaction issues, and helps reduce warranty costs. With this two-hour online course, you will learn the methods and tools used to complete each step in the Ford Global 8D find-and-fix problem-solving process, including steps to define the problem, verify the root cause and escape point, and prevent occurrence.
Training / Education

The Art of Leadership Presence

Anytime
Stuff happens. Maybe your team responds to an idea in a way you never expected. Maybe the people who were supposed to show up didn’t. Maybe a colleague expresses concern with your leadership style. Maybe someone finds a serious error in the report. We all experience surprises. What if you could meet these surprises with ease and confidence? And what if you could create, through your own personal presence, space for more positive, collaborative engagements between people? You can when you adopt the mindset of an improv actor!
Standard

Military Tire Glossary

1991-05-01
HISTORICAL
J2013_199105
This glossary of tire military/industry terminology is a direct result of many months of planned and coordinated work by the SAE Military/Industry Tire Technology Nomenclature Task Force. This effort was put forth with the hope of leading the military and industry towards standardization of terminology. This glossary represents the latest state-of-the-art terms and definitions for military use. This SAE Recommended Practice shall remain open for comments from the reader and shall also be reviewed and updated periodically. Many similar terms and definitions were reviewed from shich the ones best applied to military use were selected. It is the purpose of this task force to provide technical definitions in present day use. Please do not hesitate to inform the task force of any improvements which may be required.
Book

Counterfeit Parts and Their Impact on the Supply Chain, Second Edition

2018-11-15
Why should the supply chain be concerned if their buyers or subcontractors are purchasing counterfeit electronic parts or if their products contain counterfeit electronic parts? If these parts end up in items that are safety critical and security-risk sensitive such as aviation, space, and defense products, whole secure systems can be comprised. As organizations have become aware of counterfeit parts, one of their responses may be to test upon acceptance or prior to receipt. But testing alone may not detect all counterfeits. Possible sources of counterfeits include products that did not meet quality control requirements and were not destroyed, overruns sold into the market place, unauthorized production shifts, theft, and e-waste. The counterfeited electronic part ends up in the supply chain when ordered by an unsuspecting buyer, who does not confirm the originating source of the part.
Video

Government/Industry Meeting 2019

2018-09-01
Join us for SAE's Government/Industry Meeting in Washington, DC from April 3-5, 2019. Want to learn more? Hear from past attendees, speakers, and exhibitors about how the Government/Industry Meeting has helped them.
Video

Visionary's Take: How a Vision Becomes a Company (Part 2 of 2)

2018-10-17
Can you become a visionary or are you born one? How does a visionary capture an opportunity and makes it a successful business? Are engineers more qualified to solve technical problems or run companies? SAE's "The Visionary's Take" addresses these and many other questions, by talking directly with those who have dared to tackle difficult engineering problems and create real-life products out of their experience. In these short episodes, Daniel Hutchinson, Founder and CTO of PostProcess Technologies talks about his experience in creating a brand-new company in the already competitive world of additive manufacturing, and specifically focusing on post-printing. Founded in 2014, PostProcess Technologies developed a unique triad of software, hardware and chemistry that works together to make the process of removing supports and surface finishing easier to deal with.
Video

Visionary's Take: How a Vision Becomes a Company (Part 1 of 2)

2018-10-17
Can you become a visionary or are you born one? How does a visionary capture an opportunity and makes it a successful business? Are engineers more qualified to solve technical problems or run companies? SAE's "The Visionary's Take" addresses these and many other questions, by talking directly with those who have dared to tackle difficult engineering problems and create real-life products out of their experience. In these short episodes, Daniel Hutchinson, Founder and CTO of PostProcess Technologies talks about his experience in creating a brand-new company in the already competitive world of additive manufacturing, and specifically focusing on post-printing. Founded in 2014, PostProcess Technologies developed a unique triad of software, hardware and chemistry that works together to make the process of removing supports and surface finishing easier to deal with.
Technical Paper

A Military Space Plane Candidate

1997-10-01
975630
This paper presents a Military Space Plane design concept. While the current military space plane activity is focused on rocket-powered concepts, the concept presented here is powered by a rocket-based combined cycle engine that uses both rocket and air-breathing engine cycles. The design concept is the reference SSTO design concept used in the NASA HRST ANSER study. The reference concept is a derivative of the NASA air-breathing Access to Space study SSTO design concept. The Access to Space air-breathing vehicle's combined cycle engine was replaced by the Aerojet rocket-based combined cycle engine. The orbital performance capability of the reference design concept is presented for 100 n mi., polar, and 225 n mi., 51 deg. orbits. The sensitivity of GTOW to payload and margin is also presented.
Technical Paper

Computing Remaining Fatigue Life Under Incrementally Updated Loading Histories

2018-04-03
2018-01-0623
After manufacture, every military vehicle experiences a unique history of dynamic loads, depending on loads carried, missions completed, etc. Damage accumulates in vehicle structures and components accordingly, leading eventually to failures that can be difficult to anticipate, and to unpredictable consequences for mission objectives. The advent of simulation-based fatigue life prediction tools opens a path to Digital Twin based solutions for tracking damage, and for gaining control over vehicle reliability. An incremental damage updating feature has now been implemented in the Endurica CL fatigue solver with the aim of supporting such applications for elastomer components. The incremental updating feature is demonstrated via the example of a simple transmission mount component. The damage state of the mount is computed as it progresses towards failure under a series of typical loading histories.
Technical Paper

Optimizing Occupant Restraint Systems for Tactical Vehicles in Frontal Crashes

2018-04-03
2018-01-0621
The objective of this study was to optimize the occupant restraint systems for a light tactical vehicle in frontal crashes. A combination of sled testing and computational modeling were performed to find the optimal seatbelt and airbag designs for protecting occupants represented by three size of ATDs and two military gear configurations. This study started with 20 sled frontal crash tests to setup the baseline performance of existing seatbelts, which have been presented previously; followed by parametric computational simulations to find the best combinations of seatbelt and airbag designs for different sizes of ATDs and military gear configurations involving both driver and passengers. Then 12 sled tests were conducted with the simulation-recommended restraint designs. The test results were further used to validate the models. Another series of computational simulations and 4 sled tests were performed to fine-tune the optimal restraint design solutions.
Technical Paper

A Fast Running Loading Methodology for Ground Vehicle Underbody Blast Events

2018-04-03
2018-01-0620
A full-system, end-to-end blast modeling and simulation of vehicle underbody buried blast events typically includes detailed modeling of soil, high explosive (HE) charge and air. The complex computations involved in these simulations take days to just capture the initial 50-millisecond blast-off phase, and in some cases, even weeks. The single most intricate step in the buried blast event simulation is in the modeling of the explosive loading on the underbody structure from the blast products; it is also one of the most computationally expensive steps of the simulation. Therefore, there is significant interest in the modeling and simulation community to develop various methodologies for fast running tools to run full simulation events in quicker turnarounds of time.
Technical Paper

On Simulating Sloshing in Vehicle Dynamics

2018-04-03
2018-01-1110
We present an approach in which we use simulation to capture the two-way coupling between the dynamics of a vehicle and that of a fluid that sloshes in a tank attached to the vehicle. The simulation is carried out in and builds on support provided by two modules: Chrono::FSI (Fluid-Solid Interaction) and Chrono::Vehicle. The dynamics of the fluid phase is governed by the mass and momentum (Navier-Stokes) equations, which are discretized in space via a Lagrangian approach called Smoothed Particle Hydrodynamics. The vehicle dynamics is the solution of a set of differential algebraic equations of motion. All equations are discretized in time via a half-implicit symplectic Euler method. This solution approach is general - it allows for fully three dimensional (3D) motion and nonlinear transients. We demonstrate the solution in conjunction with the simulation of a vehicle model that performs a constant radius turn and double lane change maneuver.
Technical Paper

Simultaneous Design and Control Optimization of a Series Hybrid Military Truck

2018-04-03
2018-01-1109
This paper investigates the fuel saving potential of a series hybrid military truck using a simultaneous battery pack design and powertrain supervisory control optimization algorithm. The design optimization refers to the sizing of the Lithium-ion battery pack in the hybridized configuration. On the other hand, the powertrain supervisory control optimization finds the most efficient way to split power demands between the battery pack and the engine. Most of the previous literatures implement them separately. In contrast, combining the sizing and energy management problem into a single optimization problem produces the global optimal solution. This study proposes a novel unified framework to couple Genetic Algorithm (GA) with Pontryagin’s Minimum Principle (PMP) to determine the battery pack sizing and the power split control sequence simultaneously.
Technical Paper

System Concept Effectiveness

1966-02-01
660728
Frequently, a choice between system concepts must be made on the basis of something other than a detailed evaluation of the design effectiveness of these systems. This paper develops a rudimentary analysis process for use in addressing this problem.
Standard

Perspectives on Integrating Structural Health Monitoring Systems into Fixed-Wing Military Aircraft

2018-11-05
CURRENT
AIR6245
This SAE Aerospace Information Report (AIR) is prepared for stakeholders seeking information about the evolution, integration, and approval of SHM technologies for military aircraft systems. The report provides this information in the form of (a) two military organizations’ perspectives on requirements, and (b) general SHM challenges and industry perspectives. The report only provides information to generate awarness of prespectives for military aircraft and, hence, assists those who are involved in developing SHM systems understanding the broad range of regulations, requirements, and standards published by military organizations that are available in the public domain from the military organizations.
Technical Paper

Human Foot-Ankle Injuries and Associated Risk Curves from Under Body Blast Loading Conditions

2017-11-13
2017-22-0006
Under body blast (UBB) loading to military transport vehicles is known to cause foot-ankle fractures to occupants due to energy transfer from the vehicle floor to the feet of the soldier. The soldier posture, the proximity of the event with respect to the soldier, the personal protective equipment (PPE) and age/sex of the soldier are some variables that can influence injury severity and injury patterns. Recently conducted experiments to simulate the loading environment to the human foot/ankle in UBB events (~5ms rise time) with variables such as posture, age and PPE were used for the current study. The objective of this study was to determine statistically if these variables affected the primary injury predictors, and develop injury risk curves. Fifty below-knee post mortem human surrogate (PMHS) legs were used for statistical analysis. Injuries to specimens involved isolated and multiple fractures of varying severity.
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