This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Statistical Stability Assessment
- Aerospace Standard
Published March 16, 2016 by SAE International in United States
Downloadable datasets availableAnnotation ability available
This SAE Aerospace Information Report (AIR) provides a methodology for performing a statistical assessment of gas-turbine-engine stability-margin usage. Consideration is given to vehicle usage, fleet size, and environment to provide insight into the probability of encountering an in-service engine stall event. Current industry practices, such as ARP1420, supplemented by AIR1419, and engine thermodynamic models, are used to determine and quantify the contribution of individual stability threats. The statistical technique adopted by the S-16 committee for performing a statistical stability assessment is the Monte Carlo method (see Applicable References 1 and 2). While other techniques may be suitable, their application is beyond the scope of this document. The intent of the document is to present a methodology and process to construct a statistical-stability-assessment model for use on a specific system and its mission or application.
Engine stability analysis and assessment, and the allocation of stability margins, form integral parts of the design and development of every gas turbine engine program. The existing guidelines for stability assessments are documented in ARP1420 and AIR1419, which have been widely utilized throughout industry. However, the existing guidelines do not recognize the statistics of operational demands and can therefore potentially over emphasize low probability events. Applying statistical techniques allow an assessment of the probability of encountering a destabilizing event and thus enable a risk assessment to be made for inlet/engine compatibility. The application of such techniques form the basis of the methodology discussed in this Aerospace Information Report.
This document contains information that is fundamental to the discipline of inlet-engine compatibility and is expected to remain stable for the foreseeable future.
|Aerospace Standard||Inlet Total-Pressure-Distortion Considerations for Gas-Turbine Engines|
|Aerospace Standard||An Assessment of Planar Waves|
|Aerospace Standard||Gas Turbine Engine Performance Presentation and Nomenclature For Object-Oriented Computer Programs|
Data Sets - Support Documents
|Unnamed Dataset 1|
|Unnamed Dataset 2|
|Unnamed Dataset 3|
* Redlines comparisons are available for those standards listed in the Revision History that contain a radio button. A redline comparison of the current version against a revision is accomplished by selecting the radio button next to the standard and then selecting 'compare'. At this time, Redline versions only exist for some AMS standards. SAE will continue to add redline versioning with ongoing updates to SAE MOBILUS.