ABSTRACT High life cycle costs coupled with durability and environmental challenges of tracked vehicles in South West Asia (SWA) have focused R&D activities on understanding failure modes of track components as well as understanding the system impacts on track durability. The durability limiters for M1 Abrams (M1, M1A1, and M1A2) T-158LL track systems are the elastomeric components. The focus of this study is to review test methodology utilized to collect preliminary data on the loading distribution of a static vehicle. Proposed design changes and path forward for prediction of durability of elastomers at the systems level from component testing will be presented

Ostberg, David, Bradford, Bill

A Reconfigurable Vehicle Powertrain HIL Testing Facility

2024-01-3123

To be published on 11/15/2024

ABSTRACT Full vehicle Hardware-in-the-Loop (HIL) testing provides a virtual platform on which to accurately assess the performance of the powertrain, before the vehicle is built. Furthermore, it allows for seamless integration of components in a modeling and simulation environment with actual hardware to analyze hardware component performance. This paper presents the challenges of creating a rapidly deployable HIL test facility and compares and contrasts the test results of a conventional and parallel powertrain to modeling and simulation

Nedungadi, Ashok, Kreder, Karl

DESIGN, DEVELOPMENT AND TESTING OF HYBRID-ELECTRIC SNOWMOBILE FOR REDUCED NOISE APPLICATIONS

2024-01-3414

To be published on 11/15/2024

ABSTRACT Defence R&D Canada – Suffield has undertaken a research project to investigate the practicality of an operationally quiet hybrid-electric snowmobile. This paper reports on the design of, and the testing conducted with, a prototype noise-reduced hybrid-electric snowmobile. The project goals were to ascertain the practicality of such a design and to determine the baseline achievable noise reduction prior to any optimization. The project has overcome most of the technological hurdles, producing a solid basis for future work. The vehicle performed well in military user testing

Ouellette, Simon, Giesbrecht, Jared, Kuyek, David, De Broux, Francis, Proulx, Olivier

System Integration Laboratory (SIL) is a Key Tool for Establishing and Testing Systems Engineering Discipline

2024-01-3250

To be published on 11/15/2024

ABSTRACT The Integrated Survivability System Integration Laboratory (ISSIL) developed at the U.S. Army Tank-Automotive Research, Development, and Engineering Command (TARDEC) is a tool which enables and enhances the integration of Soldier survivability technology suites. TARDEC utilized the ISSIL to bridge the gap between concept and realization of the survivability demonstrator vehicle built on MTV 1083 A1P2 platform. The ISSIL was a critical tool for enabling the integration of mechanical, electrical, data, and networking components as well as for validating the system integration through Soldier usability trials. This paper describes how the ISSIL advanced the RDECOMs comprehensive systems engineering process throughout the modeling, analysis, design, development and testing of the demonstrator vehicle

Siddapureddy, Venu, Fountain, Nathan, Sanders, David, Budzik, Stacy

PERFORMANCE EVALUATION AND BENCHMARKING FOR UNMANNED GROUND VEHICLES

2024-01-3162

To be published on 11/15/2024

ABSTRACT Unmanned ground vehicles (UGVs) are being fielded with increasing frequency for military applications. However, there is a lack of agreed upon standards, definitions, performance metrics, and evaluation procedures for UGVs. UGV design, development, and deployability have suffered from the lack of accepted standards and metrics. Developing these standards is exceptionally difficult, because any performance metric must not only be evaluated through controlled experiments, but the metric itself must also be checked for relevance. Several committees and workgroups have taken up the challenge of providing standardized performance metrics, and an overview of the current state of performance evaluation for UGVs is presented. The ability to evaluate a potential metric through simulations would greatly enable these work efforts. To that end, an overview of the Virtual Autonomous Navigation Environment (VANE) computational test bed (CTB) and its potential use in the rapid development of

Durst, Phillip J

Performance of an Embedded Platform Aggregating and Executing Core Vehicular Integration for C4ISR/EW Interoperability (VICTORY) Services

2024-01-3335

To be published on 11/15/2024

ABSTRACT The Vehicular Integration for C4ISR/EW Interoperability (VICTORY) Standard adopts many protocols that are traditionally used for developing enterprise application software deployed on general-purpose or server/workstation based computing platforms. This has led to discussions regarding the suitability of the VICTORY Standard for deployment to embedded and resource-constrained platforms. An independent software implementation of VICTORY core services was developed within the U.S Army Tank and Automotive Research, Development and Engineering Center (TARDEC) VICTORY System Integration Lab (SIL). These services were ported from a general-purpose computing platform to an embedded environment. Test procedures were developed and extensive performance tests were conducted to determine the feasibility of operating in this resource-constrained environment. This paper discusses the development procedures, implementation, test procedures, and performance results

Russell, Mark

Optimal Restraint System Routing Procedures for Restraint System Development

2024-01-3540

To be published on 11/15/2024

ABSTRACT A process for donning restraints did not exist as related to Soldier gear encumbrance. For laboratory testing restraint donning was left to the discretion of the technician or test engineer setting up the Anthropomorphic Test Dummy (ATD) and resulted in increased occupant excursion. Therefore the Ground System Survivability (GSS) Blast Mitigation Team (BMT), United States Army Tank Automotive Research, Development and Engineering Center (TARDEC), Warren, MI. conducted studies which were accomplished through restraint system testing. This testing consisted of both Blast and Crash test modes. It was discovered that the ideal testing method couples the occupant to the seat and reduces the amount of restraint to gear interaction. When properly donned the occupant experiences reduced amounts of excursion vs. the improperly restrained occupant. This resulted in a procedure for which restraint systems are to be donned for test events. The routing procedure is included in this

Karwaczynski, Sebastian K.

NON-DESTRUCTIVE TESTING OF SENSOR ENHANCED ARMOR

2024-01-3236

To be published on 11/15/2024

ABSTRACT The US Army is replacing conventional armor with new types of ballistic protection which are lighter in weight than the materials they replace yet offer the same degree of protection. A key component of this new type of armor is called Multi Functional (MFA) or Sensor Enhanced Armor (SEA) because the armor provides more capabilities than traditional ballistic protection for the soldier and ground vehicle. In this paper we shall concentrate on the real-time health monitoring of SEA. We have developed a method which has been applied to several types of new ballistic protection. We use ultrasonic waves to excite the armor panel. We measure the response to the excitation when the ballistic protection is known to be undamaged and store the results in a database. To determine if the armor has been damaged, we measure it again and compare the new results to the contents of the database

Reynolds, Thomas, Meitzler, Thomas J., Ebenstein, Samuel

Coupled CFD-Thermal Analysis

2024-01-3218

To be published on 11/15/2024

ABSTRACT The both CFD (Computational Fluid Dynamics) and thermal analyses are used to predict a vehicle system thermal performance during the design development. The vehicle wall temperatures and compartments temperatures under various climatic conditions are predicted in MuSES thermal analyses. The temperature and air flow distributions inside the vehicle compartment are predicted in Star CCM+ CFD analyses. Recently, GDLS, Thermal Analytics, and CD-adapco jointly developed a CFD thermal analysis panel. This panel can be used to apply all boundary conditions to MuSES model and StarCCM+ CFD model by a few button clicks. It can map convection coefficients predicted in CFD analysis to the MuSES model boundaries; and vise versa, map wall temperatures and heat rates predicted in MuSES models to the boundaries in StarCCM+ models. Using this panel, the MuSES analysis and StarCCM+ analysis can be coupled to predict vehicle thermal performance with higher accuracy. Besides, most model inputs

Pang, Jing

FUEL CONSUMPTION TEST PROCEDURES FOR MILITARY WHEELED HYBRID VEHICLES

2024-01-3285

To be published on 11/15/2024

ABSTRACT The Hybrid Electric Vehicle Fuel Economy Methodology Study was conducted by the Automotive Instrumentation Division, US Army Aberdeen Test Center (ATC), Aberdeen Proving Ground (APG), Maryland, from June 2006 through August 2009. The program objectives were to develop a test protocol that can be used to evaluate the fuel consumption characteristics of a hybrid electric vehicle regardless of weight class, battery chemistry, and/or driveline configuration, and to characterize the performance of currently developed hybrid vehicles and tactical wheeled vehicle prototypes with regard to fuel consumption and energy usage. Eleven hybrids and eight conventional vehicles were provided for the methodology study. Fuel consumption tests were conducted on a wide spectrum of terrains ranging from level paved road surfaces to hilly cross country secondary road surfaces. Test vehicles were operated over the full range of speed capabilities on each of the terrain scenarios. Results for ground

Taylor, Wayne T.

THE VEHICLE INERTIA PARAMETER EVALUATION RIG II, A DEVICE FOR MEASURING INERTIA PARAMETERS OF ALL SIZES OF MILITARY VEHICLES

2024-01-3477

To be published on 11/15/2024

ABSTRACT This paper describes the VIPER II, the Vehicle Inertia Parameter Evaluation Rig, developed by SEA, Ltd at the request of the US Army’s Tank Automotive Research, Development and Engineering Center (TARDEC). The previous machine was the VIPER I, built in 2000. The new machine is built to measure vehicle center-of-gravity height, the pitch, roll, and yaw moments of inertia, and the roll/yaw cross product of inertia. It is made to test nearly all of the Army’s wheeled vehicles, covering a range of weights from 3000 to 100,000 lbs, up to 150 inches in width and up to 600 inches in length. Commercial vehicles could also be tested. The machine was installed in March, 2014 in the TARDEC facility in Warren, MI. The paper describes the need for such measurements, the basic features of the machine, the test procedure, and the results of early testing. The design specification for accuracy was 3% for all measurements, but the actual VIPER II accuracy is usually better than 1

Andreatta, Dale, Heydinger, Gary J., Bixel, Ronald A., Sidhu, Anmol, Kurec, Aleksander, Baseski, Igor, Skorupa, Thomas

TESTING OF NANOPHOSPHATE™ PRISMATIC BATTERY CELLS IN THE XM1124 HYBRID ELECTRIC HMMWV

2024-01-3273

To be published on 11/15/2024

ABSTRACT The XM1124 HE HMMWV has the potential for providing this capability on the battlefield. The XM1124 is a TARDEC funded program that converts a standard HMMWV into a series, HE HMMWV. Over the past 5 years, this vehicle has been in the hands of the warfighter and has undergone a significant amount of testing and a number of upgrades. In a joint effort between TARDEC, DRS, and A123 Systems, the vehicle is being upgraded using A123 Nanophosphate™ prismatic cells to provide additional energy storage. This technology shows the potential for providing the energy and power needed for a ruggedized Military Application, while providing a safe, efficient means of energy storage and transfer that can be used in this extremely challenging environment

Marcel, Mike, Knakal, Tony, Stifflemire, Terry, Lock, Bob

Improved Reliability Testing and Modeling of Electronics with Multi-DOF Vibration in Unmanned Army Ground Vehicles

2024-01-3163

To be published on 11/15/2024

ABSTRACT The functionality of the next-generation Department of Defense platforms, such as the Small Unmanned Ground Vehicles (SUGV) and Small Unmanned Arial Vehicles (SUAV), requires strongly electronics-rich architectures. The reliability of these systems will be dependent on the reliability of the electronics. These electronic systems and the critical components in them can experience extremely harsh thermal and vibrations environments. Therefore, it is imperative to identify the failure mechanisms of these components through experiments and simulation based on physics-of-failure methods. One of the key challenges in recreating life-cycle vibration conditions during design and qualification testing in the lab is the re-creation of simultaneous multi-axial excitation that closely mimics what the product experiences in the field. Currently, there are two common approaches in the industry when testing a prototype or qualifying a product for multi-axial vibration environments. One

Habtour, Ed, Mortin, David, Choi, Cholmin, Dasgupta, Abhijit

ASSESSMENT OF A BAYESIAN MODEL AND TEST VALIDATION METHOD

2024-01-3065

To be published on 11/15/2024

ABSTRACT Probabilistic Principal Component Analysis (PPCA) is a promising tool for validating tests and computational models by means of comparing the multivariate time histories they generate to available field data. Following PPCA by interval-based Bayesian hypothesis testing enables acceptance or rejection of the tests and models given the available field data. In this work, we investigate the robustness of this methodology and present sensitivity studies of validating hybrid powertrain models of a military vehicle simulated over different proving ground courses

Pai, Yogita, Kokkolaras, Michael, Hulbert, Gregory, Papalambros, Panos, Pozolo, Michael K., Fu, Yan, Yang, Ren-Jye, Barbat, Saeed

The Single Technology Matrix Process for Fully Formulated Engine Oil Capability Testing

2024-01-4299To be published on 11/05/2024

The American Petroleum Institute’s (API) Single Technology Matrix (STM) is a data-based, Virtual Testing process and protocol (utilizes test data, characteristics and features of base stocks and blends coupled with statistical methods and analysis) used to predict the performance capability of a specific engine oil additive technology in a single specified base oil, in a given engine test. The concept was first introduced in 2002, codified and implemented by API in 2007, and updated in 2022. The previously published advantages of STM in the proof-of-performance of engine oils, remain relevant. These advantages include a data space focused on interpolation, documented statistical analysis protocol, limitation to a specific formulation, flexibility in understanding complicated, interactive, or non-linear technology and base oil relationships, and timeliness. There have been numerous changes to, and in, the engine oil industry since the introduction of STM in 2007. These include advances

Zielinski, Christine, Scinto, Philip, Chen, Min, Gibbons, Greer, Baker, Charles

Emission characteristics of different TCR Diesel fuels in comparison to diesel fuel derived from other sources

2024-01-4289To be published on 11/05/2024

As part of the European Green Deal, the EU has set itself the binding target of achieving climate neutrality by 2050 with the European Climate Act. At the same time, the EU is currently being confronted with an unprecedented energy crisis coupled with an increasing economic pressure, caused by military conflicts and geopolitical tensions resulting in increased fossil fuel prices. However due to high energy density liquid hydro-carbons are still critical needed fuels for transportation. On the other hand Biomass wastes, like sewage sludge and paper sludge, are currently a significant challenge to environmental protection. As a result due to nitrate pollution in soil, e.g. sewage sludge is no longer permissible to distribute on agricultural fields in a growing number of areas such as parts of Italy and Germany. Therefore there is currently a growing move towards the use of sewage sludge or paper sludge in thermal conversion processes. The Fraunhofer-Institute for Environmental, Safety

Seeger, Jan, Taschek, Marco

Experimental Test Bench Showcasing an X in the Loop Strategy for Fuel Cell Testing

2024-01-4322To be published on 11/05/2024

In the quest for reduced development times and cost of fuel cell systems for industrial applications, we identified two major issues. First, the electrochemical behaviour of fuel cell systems is inherently difficult to predict. Second, testing fuel cell systems is resource intensive. These issues compound: Setting up an accurate model of a fuel cell system incurs long testing periods and does not guarantee acceptable results outside the tested parameters or for other membrane electrode assembly compositions. Our proposal to mitigate these two major issues is the use of an X in the Loop concept. Essentially, this is the direct integration of the test sample, here a single fuel cell, into the modelling environment of the whole system. In practice, we have defined two strategies with different levels of integration. Both assume a required power profile is given. The first strategy consists of deducing the operating parameters of the sample cell from a fuel cell system model in real time

Oswald, Tancrède, Weiss, Lukas, Wensing, Michael

Battery Electric Transit Bus Safety and Performance Testing: A Review of Current Practices and Correlation to Battery Failure Modes

2024-01-4330To be published on 11/05/2024

Transit agencies globally have been investing in more battery electric buses (BEB) in an effort to combat growing negative externalities stemming from the use of traditional petrochemicals fuels in combustion vehicles. These buses use new battery technologies to cut carbon pollution and promote cleaner, faster, and safer rides. As new electrification technologies continue to penetrate the bus transit market, there is a continuous need to evaluate the safety and performance of these battery systems. To meet the need of ensuring the safety and performance of battery technologies in transit buses, regulations and standards have been established and are continuously refined to prescribe best testing and industry practices. In a joint research effort between The Ohio State University and the Federal Transit Administration (FTA), this paper details the current state of battery standards and regulations and how these standards and regulations tie back to battery failure modes and effects

Jankord, Gregory, Gravante, Emanuele, D'Arpino, Matilde

Advancing Fuel Cell Testing Environments: Overcoming Limitations in Conventional Humidification Methods

2024-01-4321To be published on 11/05/2024

In the field of polymer electrolyte membrane fuel cells (PEMFC), significant research has focused on the membrane electrode assembly (MEA) and electrochemical characterization methods. For real applications optimizing the fuel cell system (FCS) design is essential, requiring careful monitoring of electrochemical and thermodynamic process parameters such as pressure, temperature, relative humidity, heat flux, and gas composition. These operating conditions, provided by balance of plant (BoP) components, significantly impact FCS efficiency, especially relative humidity, which demands high energy input. The first step in a system development involves comprehensively characterizing the MEA by mapping a wide range of operating parameters, not just peak performance points, which are not necessarily the most beneficial for the FCS. This requires precise and dynamic adjustments of process parameters during testing to capture all relevant data efficiently. Currently available test stands lack

Braun, Katharina, Luetzenkirchen, Johanna, Weiss, Lukas, Wensing, Michael

Reproducing Internal Injector Deposits found in Heavy-Duty Vehicles with a Novel Injector Rig

2024-01-4298To be published on 11/05/2024

In recent years, deposit formation in the fuel systems for heavy-duty engines, using drop-in fuels, have become increasingly common. Drop-in fuels are particularly appealing because as they are compatible with existing engines, allowing for higher proportions of alternative fuels to be blended with conventional fuels. However, the precipitation of insoluble substances from drop-in fuels can result in fuel filter clogging and the formation of internal injector deposits, leading to higher fuel consumption and issues with engine drivability. The precise reasons behind the formation of these deposits in the fuel system remain unclear, with factors such as operating conditions, fuel quality, and fuel contamination all suggested as potential contributors. In order to reproduce and study the formation of internal injector deposits, for heavy-duty engines under controlled conditions, facilitating a more precise comparison to field trials, a novel injector test rig has been developed. This

Pach, Mayte, Hittig, Henrik, Theveny, Arnaud, Kusar, Henrik, Hruby, Sarah

High-load operating characteristics of planar membrane humidifiers of polymer electrolyte membrane fuel cell systems for heavy-duty applications

2024-01-4323To be published on 11/05/2024

To gain high efficiencies and long lifetimes, polymer electrolyte membrane fuel cell systems require precise control of the relative humidity of the cathode supply air. This is usually accomplished with membrane humidifiers. These are passive components that use the humidity of the cathode exhaust air to humidify the supply air. Due to the passive design, controllability is achieved via a bypass. To avoid the use of humidity sensors, map-based control strategies are possible. Such map-based control requires deep insights into the humidifier behavior in all possible thermodynamic operating states, including various water loads. This paper focuses on typical operating conditions of heavy-duty application at high load, specifically on the occurrence of liquid water in the cathode exhaust stream, which has not been sufficiently investigated in the literature yet. In order to simulate these conditions, we built a test rig with an optically accessible single-channel set-up. To measure the

Mull, Sophie, Weiss, Lukas, Wensing, Michael

Enhancing the Performance of Aerofoil Using Novel Injection–Suction Method

2024-01-6008

To be published on 10/30/2024

The objective of the paper is to enhance the aerodynamic performance of an aircraft wing using the injection–suction method. This method utilizes simulation techniques based on the Reynolds-averaged Navier–Stokes (RANS) equations with a k-epsilon turbulence model solver. The results of the simulations demonstrate a significant improvement in the wing’s performance, with a 33% increase in the stalling angle and a 10% enhancement in the lift coefficient compared to the baseline airfoil. The drag value is decreasing up to 40% depending on the angle of attack. The novelty of this proposed method was in the strategic placement of injection and suction. Injection is applied over the top airfoil at the separation point, while suction is applied at the midsection of the bottom airfoil. This configuration optimizes the aerodynamic flow over the wing, leading to improved performance metrics of lift coefficient and stall angle. This concept has potential applications in subsonic fixed-wing

Rameshbhai, Patel Ankitkumar, Patidar, Vijay Kumar, Balaji, K.

Impact of Biobutanol Addition into Waste Seed Oils on the Performance, Combustion, and Emissions of Compression Ignition Engine

2024-01-5094

10/15/2024

Seeds from various fruits are not utilized properly and thrown into the ground. These can be utilized by extracting oil from them for the use of fuel to compression ignition engines. Also, the vegetables cut waste and fruits waste are also not utilized and disposed as garbage. These wastes can be converted into biobutanol and can be used as fuel for compression ignition engines. This study is to replace diesel fuel by blending biobutanol with castor oil, amla seed oil, and jamun seed oil without and with modification of engine operating parameters. The steps of this study are: preparation of various proportions of biobutanol and castor oil (from 0 to 5% in increments of 1%), amla seed oil (0–100% in increments of 5%), and jamun seed oil (0–100% in increments of 5%) and the essential properties are tested. By the comparison of properties of the blends with diesel fuel, suitable blends are chosen from the prepared blends (one blend from each seed oil and biobutanol). The chosen blends

Prabakaran, B., Yasin, Mohd Hafizil Mat

Optimizing Cutting Parameters for Effective Turning of EN-31 Steel by Utilizing Vegetable-Based Cutting Fluids as a Coolant

05-18-01-0006

10/12/2024

The primary objective of this article is to study the improvement of machining efficiency of EN-31 steel by optimizing turning parameters using newly developed cutting fluids with different proportions of aloe vera gel and coconut oil, utilizing the Taguchi technique. Furthermore, performance metrics including material removal rate (MRR), surface roughness, and tool wear rate (TWR) were assessed. Analysis of variance (ANOVA) suggested that as cutting speed and feed increase, the MRR is positively influenced, but likewise tool wear is intensified. The surface roughness exhibited a positive correlation with cutting speed, and a negative correlation with increasing both cutting speed and feed. It was found that the maximum MRR value was attained at a cutting speed of 275 m/min, a feed rate of 1.00 mm/rev, and a cutting fluid composition of 30% aloe vera and 70% coconut oil. For the best surface smoothness, it is advisable to adjust the cutting speed to 350 m/min and the feed rate to 0.075

Premkumar, R., Ramesh Babu, R., Saiyathibrahim, A., Murali Krishnan, R., Vivek, R., Jatti, Vijaykumar S., Rane, Vivek S., Balaji, K.

Off-Road Self-Propelled Work Machines Operator Enclosure Environment Part 3: Operator Enclosure Pressurization System and Ventilation System Test Procedures

J3078/3_202410 (Current)10/11/2024

SAE J3078/3 establishes a uniform test procedure for evaluating performance of operator enclosure pressurization and ventilation systems. This standard is applicable to off-road, self-propelled work machines, as defined in SAE J1116, and includes tractors and machinery for agriculture and forestry as defined in ASABE standard ANSI/ASAE S390

HFTC6, Operator Accommodation

Fiber Optic Wavelength Division Multiplexed (WDM) Singlemode Interconnect and Component Standards Mapping for Aerospace Platform Applications – Device Level Specification

AIR5667 (Current)

10/08/2024

The purpose of this document is to serve as a resource to aerospace designers who are planning to utilize Wavelength Division Multiplexed (WDM) interconnects and components. Many WDM commercial systems exist and they incorporate a number of existing, commercially supported, standards that define the critical parameters to guide the development of these systems. These standards ensure interoperability between the elements within these systems. The commercial industry is motivated to utilize these standards to minimize the amount of tailored development. However, since some of the aerospace parameters are not satisfied by the commercial devices, this document will also try to extend the commercial parameters to those that are necessary for aerospace systems. The document provides cross-references to existing or emerging optical component and subsystem standards. These parameter definitions, test methods, and procedures typically apply to telecommunications application and in some cases

AS-3 Fiber Optics and Applied Photonics Committee

Verification of Discrete and Packaged Photonic Device Technology Readiness

ARP6318 (Current)

10/08/2024

This document is intended for discrete and integrated digital, wavelength division multiplexing (WDM), and analog/radio frequency (RF) photonic components developed for eventual transition to aerospace platforms. The document provides the reasons for verification of photonic device life test and packaging durability. The document focuses on pre-qualification activity at the optical component level to achieve TRL 6. The recommended tests in this document are intended to excite typical failure mechanisms encountered with photonic devices in an aerospace operating environment, and to build confidence that a technology is qualifiable during a program’s engineering and manufacturing development phase. This recommended practice is targeting components to support electrical-to-optical, optical-to-electrical, or optical-to-optical functionality. Passive optical waveguide, fiber optic cable, and connector components that are integral to a photonic package are included. Component and photonic

AS-3 Fiber Optics and Applied Photonics Committee

Inline Optical Power Monitoring, Network End-to-End Data Link Evaluation System

AIR6552/1 (Current)10/07/2024

This document establishes methods to obtain, store, and access data about the health of a fiber optic network using commercially available inline optical power monitoring sensors. This document is intended for: Managers Engineers Technicians Contracting officers Third party maintenance agencies Quality assurance

AS-3 Fiber Optics and Applied Photonics Committee

Digital Fiber Optic Link Loss Budget Methodology for Aerospace Platforms

AS5603A (Current)

10/07/2024

This document defines the steps and documentation required to perform a digital fiber optic link loss budget. This document does not specify how to design a digital fiber optic link. This document does not specify the parameters and data to use in a digital fiber optic link loss budget

AS-3 Fiber Optics and Applied Photonics Committee

In-Service Fiber Optic Inspection, Evaluation and Cleaning, Best Practices, Physical Contact Termini

ARP6283 (Current)

10/07/2024

This document provides recommended best practice methods and processes for the in-service inspection, evaluation and cleaning of all physical contact (PC) fiber optic interconnect components (termini, alignment sleeves and connectors), test equipment and test leads for maintainers qualified to the approved aerospace fiber optic training courses developed in accordance with ARP5602 or ARINC807. This document also provides a decision-making disposition flowchart to determine whether the fiber optic components are acceptable for operation. For definitions of individual component parts refer to ARP5061

AS-3 Fiber Optics and Applied Photonics Committee

Mechanical Splice for Aerospace Fiber Optic Cables

AS5405 (Current)

10/07/2024

This document defines performance standards which mechanical fiber optic cable splices must meet to be accepted for use in aerospace platforms and environments

AS-3 Fiber Optics and Applied Photonics Committee

Fusion Splice for Aerospace Fiber Optic Cables

AS6506A (Current)

10/07/2024

This document defines performance standards which fiber optic cable splices must meet to be accepted for use in aerospace platforms and environments

AS-3 Fiber Optics and Applied Photonics Committee

Spacers and Washers, Procurement Specification for, Metric

MA1784A (Current)

10/03/2024

This specification covers metric aircraft quality spacers for use as positioners for tubes, flat washers for use as load spreaders, galling protection of adjacent surfaces and or material compatibility, and key or tab washers for use as locks for bolts, nuts, and screws

E-25 General Standards for Aerospace and Propulsion Systems

Aircraft Turbine Engine Pneumatic Component Contaminated Air Endurance Test

ARP4014A (Current)

10/03/2024

This SAE Aerospace Recommended Practice (ARP) describes a method of conducting an endurance test using contaminated air when the applicable specification requires non-recirculation of the contaminants. The objective of the test is to determine the resistance of the engine mounted components to wear or damage caused by the contaminated air. The method described herein calls for non-recirculation of the contaminants and is intended to provide a uniform distribution of the contaminant at the inlet to the Unit Under Test (UUT). The UUT may require the use of a hydraulic fluid for actuation of components within the test unit. Contamination of the test hydraulic fluid is not part of this recommended practice. If contaminated hydraulic fluid is required by the applicable test specification, refer to MAP749

AC-9 Aircraft Environmental Systems Committee

Air Quality for Commercial Aircraft Cabins

AIR4766 (Current)

10/03/2024

This SAE Aerospace Information Report (AIR) provides information on air quality and some of the factors affecting the perception of cabin air quality in commercial aircraft cabin air. Also a typical safety analysis process utilizing a Functional Hazard Assessment approach is discussed

AC-9 Aircraft Environmental Systems Committee

Rising Star Awards: Women in Engineering Aerospace Winner Heather Cummings

24AERP10_05

10/01/2024

Heather Cummings, a 27-year old senior flight controls and autonomy engineer at Sikorsky, is the winner of the Aerospace/Defense category for SAE Media Group's inaugural Women in Engineering: Rising Star Awards program. In addition to her role developing flight control software and improving Sikorsky's Innovations department's processes for software and model-based systems engineering, she is also a pilot. Among her career accomplishments at Sikorsky include leading the flight controls software development and flight testing program on a technology demonstrator aircraft for autonomy and reduced crew operations. The project involved Heather dividing up sub-tasks for the project and working with each individual on the team to mentor them on the engineering skills necessary for completion. She also served as the onboard flight test engineer for the project. One of her career goals is to serve as the lead engineer on new technologies that form the next generation of semi and fully

Infrasound Phenomenon in Engine Test Cells

AIR5303A (Current)

10/01/2024

This SAE Aerospace Information Report (AIR) has been written for individuals associated with the ground-level testing of large turbofan and turbojet engines, particularly those who are interested in infrasound phenomena

EG-1E Gas Turbine Test Facilities and Equipment

Numerical Analysis and Design Optimization of Cooling System for Construction Vehicles

2024-28-0116

09/19/2024

A well-designed cooling system is crucial in construction machines for efficient heat dissipation from vital components, including the Radiator(RAD), Oil Cooler (OC) and Intercooler (IC). The radiator ensures optimal engine performance and longevity by maintaining a stable operating temperature. Oil Coolers preserve hydraulic system efficiency. Inter Coolers optimize engine performance through denser intake air. The robust cooling system enhances system reliability, reduces downtime, avoid overdesigned system, and increases operator safety in demanding construction environments. The size and location of heat exchangers are critical in cooling system design. Using 1D simulation tool KULI for cooling system design offers the benefits of comprehensive system simulation, optimization of thermal management, reduced development time and costs, enhanced system reliability, improved integration with other systems, and real-world testing and validation. The tool enables time and cost-effective

Dewangan, Nitin, Kattula, Nitin, Goklani, Mohit

Test Method for Measuring Performance of Engine Cooling Fans

J1339_202409 (Current)

09/18/2024

This SAE Recommended Practice is intended for use in testing and evaluating the approximate performance of engine-driven cooling fans. This performance would include flow, pressure, and power. This flow and pressure information is used to estimate the engine cooling performance. This power consumption is used to estimate net engine power per SAE J1349. The procedure also provides a general description of equipment necessary to measure the approximate fan performance. The test conditions in the procedure generally will not match those of the installation for which cooling and fuel consumption information is desired. The performance of a given fan depends on the geometric details of the installation, including the shroud and its clearance. These details should be duplicated in the test setup if accurate performance measurement is expected. The performance at a given air density and speed also depends on the volumetric flow rate, or the pressure rise across the fan, since these two

Cooling Systems Standards Committee

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