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Standard

Hydraulic Power Pump Test Procedure

2023-10-03
WIP
J745
This test code describes tests for determining characteristics of hydraulic positive displacement pumps used on off-road self-propelled work machines as referenced in SAE J1116.
Standard

Hydraulic Motor Test Procedures

2023-10-03
WIP
J746
This test code describes tests for determining characteristics of hydraulic positive displacement motors as used on off-road self-propelled work machines as referenced in SAE J1116.
Standard

Design and Operating Requirements of the Onboard Aircraft Refueling System and Associated Ground Refueling Equipment Interface

2023-10-02
CURRENT
AS5751
This SAE Aerospace Specification (AS) is applicable to all aircraft. This AS defines the minimum design and operating requirements for the aircraft refueling interface. These requirements establish the minimum criteria for the aircraft design that provides practical standardized refueling system requirements, provides minimum standardized criteria for the operation and performance of any aircraft refueling equipment, and establishes an integrated minimum performance for aircraft refueling operations. This standardization provides the minimum design criteria to assure full compatibility between the aircraft refueling system connection point(s), aircraft operating characteristics, and the design and operation of ground based aircraft refueling equipment in all steady state and dynamic refueling and defueling conditions. The criteria that shall be used to test the operation and performance of the aircraft refueling system and equipment are also specified.
Technical Paper

Energy Losses Analysis and Efficiency Enhancement of Dual-Belt Continuously Variable Transmission with Two Electromechanical Actuators

2023-10-02
2023-01-5068
The continuously variable transmission (CVT) for automotive applications can better the transmission of power and fuel economy, a steel-belt design and clamping force for power transmission are under development by many researchers to increase the efficiency of a CVT and decrease the actuator power. The present work assesses the transmission efficiency with two electromechanical actuators system (TEMA) to modify the clamping force and DBCVT speed reduction ratio. The model is designed based on DBCVT simulation with TEMA package to evaluate the DBCVT component energy losses, transmission efficiency, and energy consumed by TEMA. According to the results, the TEMA effectiveness of the suggested DBCVT has a higher efficiency and improve energy losses than a single-belt CVT (SBCVT) but the average energy consumed by an actuator for SBCVT was lower than that of the TEMA with DBCVT throughout the new European drive cycle (NEDC).
Standard

Considerations for ISO 26262 ASIL Hazard Classification

2023-10-02
CURRENT
J2980_202310
This SAE Recommended Practice presents a method and example results for determining the Automotive Safety Integrity Level (ASIL) for automotive motion control electrical and/or electronic (E/E) systems. The ASIL determination activity is required by ISO 26262-3, and it is intended that the process and results herein are consistent with ISO 26262. The technical focus of this document is on vehicle motion control systems. The scope of this SAE Recommended Practice is limited to collision-related hazards associated with motion control systems. This SAE Recommended Practice focuses on motion control systems since the hazards they can create generally have higher ASIL ratings, as compared to the hazards non-motion control systems can create. Because of this, the Functional Safety Committee decided to give motion control systems a higher priority and focus exclusively on them in this SAE Recommended Practice.
Standard

Aircraft Precipitation Static Certification

2023-10-02
CURRENT
ARP5672
Aircraft surface precipitation static (p-static) charge can be generated when aircraft fly through ice particles, rain, snow and dust. However, in the context of p-static protection, this document is used for providing guidance for any thing that charges the outer surface of the aircraft (e.g. engine exhaust). P-static discharges from the aircraft can disrupt aircraft communication, navigation, and surveillance radios, and can damage aircraft radomes and windshields. This SAE Aerospace Recommended Practice (ARP) defines design considerations for aircraft p-static control and related methods to verify acceptable aircraft p-static performance. This ARP addresses p-static charging due to the aircraft flying through ice particles, rain, snow and dust. It does not address other triboelectric charging that may be present in an aircraft, such as triboelectric fuel charging or environmental control system or air conditioning static charging.
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