Search Results

The aerospace industry has long sought a solution for storing maintenance history information directly on aircraft parts. In 2005 leading airframe manufacturers determined that passive Radio Frequency Identification (RFID) technology presented a unique opportunity to address this industry need. Through the efforts of the Air Transport Association (ATA) RFID on Parts Committee and SAE International testing standards and data specifications are in place to support the broad adoption of passive RFID for storing parts history information directly on aircraft parts. The primary focus of the paper will be on the SAE AS-5678 environmental testing standard for passive RFID tags intended for aircraft use. Detail will be provided to help aerospace manufacturers understand their role and responsibilities for current programs and understand how this may impact their parts certification process.

Probabilistic methods are used in calculating composite part design factors for, and are intended to conservatively compensate for worst case impact to composite parts used on space and aerospace vehicles. The current method to investigate impact damage of composite parts is visual based upon observation of an indentation. A more reliable and accurate determinant of impact damage is to measure impact energy. RF impact sensors can be used to gather data to establish an impact damage benchmark for deterministic design criteria that will reduce material applied to composite parts to compensate for uncertainties resulting from observed impact damage. Once the benchmark has been established, RF impact sensors will be applied to composite parts throughout their life-cycle to alert and identify the location of impact damage that exceeds the maximum established benchmark for impact.

One of the main objective of manufacturer is to achieve high productivity with low cost while increasing the customer satisfaction. With increased competition in the automotive sector the product quality is defined not only from fuel economy and durability perspective but also Noise, Vibration and Harshness (NVH), which plays a vital role in attracting the customers. In two wheelers, engine is dominant noise source and its quality improvement is utmost priority. Now a days, several signal processing and sensing techniques are developed for noise source identification of an engine but precise source identification can be achieved only by advanced analysis technique. This paper focuses on a procedure for noise source identification from engine sub-system viz. valve operation and its generation mechanism using crank angle domain analysis in two wheeler engine. Baseline noise measurements were carried out for critical frequency identification.

This SAE Aerospace Standard (AS) covers high strength thin wall ratcheting box wrenches which possess the strength, clearances, and internal wrenching design so configured that, when mated with bihexagonal (12 point) fasteners conforming to the requirement of AS870 for inch sizes and ISO 4095 for metric sizes, they shall transmit torque to the fastener without bearing on the outer 5% of the fastener’s wrenching points. Inclusion of dimensional data in this document is not intended to imply that all products described herein are stock production sizes. Consumers are requested to consult with manufacturers concerning lists of stock production sizes. The dimensional limits of box and combination wrench lengths have been established to provide configuration control for tool storage applications.

This specification includes detailed requirements for a fiber optic cable splice compliant with AS6506. Every requirement of the parent standard, AS6506, which applies to this detail specification is identified below by the word “applicable.” In any case in which a requirement of this specification varies from that of the parent standard, the alternate requirement is described. If a parent standard requirement does not apply, the words used are “not applicable.”

This guidance standard was prepared in response to a need stated by air transport operators for uniformity in further subdividing the ATA Spec. 100 number system to better accommodate avionics systems. The ATA numbers are widely used in the maintenance community for inventory control, instruction manuals and equipment modification Service Bulletins.

This specification defines the addressing plan and rules for addressing used in Aircraft Data Networks (ADN). The plan is organized in accordance with the seven-layer Open Systems Interconnection (OSI) Reference Model. The specification sets forth the structure of addresses that are employed in the ADN and guidance for address determination. This guidance ensures that all applications - that use this address structure to send messages - can know the address structure of the destination(s) at configuration-time.

With the emergence of RFID (Radio Frequency Identification) as a tool to streamline the supply chain, the airline industry determined that a technology standard for both the RFID tag hardware and data needed to be developed. This is required so that industry-wide interoperability can be achieved. Fundamental requirements have been identified and agreed upon by the airline industry. These core requirements build the framework from which this standard was derived. The usage of an open standard UHF-RFID technology will benefit the entire airline industry. While the intent of this document is to address the usage of UHF-RFID tags on aircraft parts, the technology and benefits are applicable to other items that would be in airline inventory. To that extent, the term Product has been used in this standard. This document is specific to the requirements for and installation of UHF-RFID tags and does not address data usage or the tools and systems used to collect the data.