Refine Your Search

Search Results

Standard

Modules and Basic Racks of Metric Spur and Helical Gears

2018-09-11
CURRENT
AS1560B
This SAE Aerospace Standard (AS) establishes the standard modules for aerospace metric involute gear teeth and establishes the tooth dimensions of aerospace metric involute gear teeth in terms of the conjugate rack type cutter whose counterpart reference profile is called the basic rack profile of the generated gear, having the tooth dimensions expressed in terms proportional to the module.
Standard

Limits, Table of Limits and Lubrication Charts

2018-09-11
CURRENT
AS176D
This specification covers the requirements for the preparation of Limits, Table of Limits and Lubrication Charts in published form for service and production use.
Standard

Aerospace Electrical Power System Stability

2018-09-10
WIP
AIR8445
EPS stability is an essential property that defines EPS ability to provide secure operation under required range of operation scenario. Power system stability is defined as “the ability of an electric power system, for a given initial operating condition, to regain a state of operating equilibrium after being subjected to a physical disturbance, with most system variables bounded so that practically the entire system remains intact”. This is applicable for AC and DC systems and has to address steady state conditions, transient conditions as well as high power loads connection / disconnection on the network.
Standard

Self-Displacing Hydraulic Accumulator

2018-09-04
CURRENT
ARP4553B
This SAE Aerospace Recommended Practice (ARP) provides recommendations for design and test requirements for self-displacing hydraulic accumulators.
Standard

Guidelines for Time-Limited-Dispatch (TLD) Analysis for Electronic Engine Control Systems

2018-09-04
CURRENT
ARP5107C
This SAE Aerospace Recommended Practice (ARP) provides methodologies and approaches which have been used for conducting and documenting the analyses associated with the application of Time Limited Dispatch (TLD) to the thrust control reliability of Full Authority Digital Engine Control (FADEC) systems. The TLD concept is one wherein a fault-tolerant system is allowed to operate for a predetermined length of time with faults present in the redundant elements of the system, before repairs are required. This document includes the background of the development of TLD, the structure of TLD that was developed and implemented on present generation commercial transports, and the analysis methods used to validate the application of TLD on present day FADEC equipped aircraft.
X