Tag Archives: SAE AS

SAE AS4074B

Linear Token Passing Multiplex Data Bus (Stabilized: Feb 2017)

Published by: 2017-02-21 / 2017-02-21

This standard specifies the characteristics of the SAE Linear Token Passing Bus (LTPB) Interface Unit.

The LTPB provides a high reliability, high bandwidth, low latency serial interconnection network suitable for utilization in real time military and commercial applications. Multiple redundant data paths can be implemented to enhance reliability and survivability in those applications which require these attributes. The token passing and data exchange protocols are optimized to provide low latency and fast failure detection and correction. Physical configurations with bus lengths up to 1000 m can be accommodated.

This specification defines the following:

a. General Description (3.1): An overview of the LTPB protocol.

b. Physical Media Interface (3.2): This portion of the standard defines the physical interface to both optical and electrical bus media.

c. Access Protocol Definition (3.3): This portion of the standard defines the symbols, frame formats, timing functions and traffic recording requirements of the Token Passing Interface Unit (TPIU).

d. Network Protocol Definition (3.4): This portion of the standard defines the network control and station management functions.

e. Test and Verification (Section 4): This paragraph defines the responsibilities and methods for test and verification of the LTPB.

f. TPIU State Machine (Section 5): This section defines the TPIU States and state transition rules.

Ordering and availability

This publication is available both in printed and PDF edition.

SAE AS6858

Installation of Fuel Cell Systems in Large Civil Aircraft

Published by: 2017-03-02 / 2017-03-02

This is a joint SAE/EUROCAE development. This document will be released as both an SAE Aerospace Specification (AS) and a EUROCAE Minimum Aviation System Performance Standard (MASPS).

This document defines the technical requirements for the safe integration of gaseous hydrogen fueled Proton Exchange Membrane (PEM) Fuel Cell Systems (FCS) within the aircraft.

Most of the technical concepts and approaches covered by this document represent current industry “best practice”. Others require specific approval from the procuring activity before use. This requirement for approval is not intended to prohibit their use; but rather to ensure that the prime contractor has fully investigated their capability to perform reliably and to be sufficiently durable under the required conditions and that the prime contractor can present substantiating evidence for approval before the design is committed to.

Ordering and availability

This publication is available both in printed and PDF edition.

SAE AS6023

Active and Battery Assisted Passive Tags Intended for Aircraft Use

Published by: 2017-02-21 / 2017-02-21

The scope of this document is to:

– Provide a requirements document for RFID Tag Manufacturers to produce active RFID tags for the Aerospace industry.

– Provide a requirements document for RFID Tag Manufacturers to produce active RFID tags for the Aerospace industry.Identify the minimum performance requirements for active RFID tags to be used on or in close proximity to aircraft.

– Provide a requirements document for RFID Tag Manufacturers to produce active RFID tags for the Aerospace industry.Specify the test requirements specific to active RFID tags for aircraft use, in addition to RTCA DO-160 compliance requirements separately called out in this document.

– Provide a requirements document for RFID Tag Manufacturers to produce active RFID tags for the Aerospace industry.Identify existing standards applicable to active RFID Tag.

– Provide a requirements document for RFID Tag Manufacturers to produce active RFID tags for the Aerospace industry.Provide a certification standard for RFID tags which will use permanently-affixed installation on aircraft and aircraft parts.

– Provide a requirements document for RFID Tag Manufacturers to produce active RFID tags for the Aerospace industry.Battery standards are separately captured and not included in this document.

Ordering and availability

This publication is available both in printed and PDF edition.