This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Fast Start Ceramic Auxiliary Power Unit
Annotation ability available
Sector:
Language:
English
Abstract
This paper discusses the results of analytical studies supported by current development efforts and research paths to implement fast start technology for small gas turbine APU's, using non-metallic rotor components.
APU start system weights can be a significant fraction of the total installed APU weight, especially if fast starts are demanded under sub-Arctic environments. It is shown that both start system weight, and rotor containment armor weight are proportional to the product of rotational speed squared and rotating assembly inertia. Significant weight savings are therefore feasible with rotating assemblies using lower density materials such as ceramics and composites.
Recent tests are described at the authors affiliation wherein a modified T20 small gas turbine was accelerated from zero to 100% speed in 2 1/2 seconds.
Recommended Content
Authors
Citation
Bornemisza, T. and Rodgers, C., "Fast Start Ceramic Auxiliary Power Unit," SAE Technical Paper 892254, 1989, https://doi.org/10.4271/892254.Also In
References
- Rodgers C. “Fast Start APU Technology” SAE 861712
- Jones A.C. Weber H. Fort E. “Gemjet - A small Low Cost Expendable Turbojet” AAIA 872140
- Napier J.C. Arnold J.P. “Advancements in Application of Ceramics to the Gemini Radial Flow Gas Turbine” ASME 86 GT18.3
- Rodgers C. “A Jet Fuel Starter and Expendable Turbojet” ASME 86 GT-1
- Gyekenyesi J.P. “SCARE: A Post Processor Program to MSC/NASTRAN for Reliability Analysis of Structural/Ceramic Components.” Journal of Engineering Gas Turbines Power 108 3 July 1986 540 546
- Gyekenyesi J.P. Nemeth N. “Surface Flaw Reliability Analysis of Ceramic Components with the SCARE Finite Elements Post Processor Program.” Journal of Engineering Gas Turbines Power 109 3 July 1987 274 281
- Pai S.S. Gyekenyesi J.P. “Calculation of Weibull Strength Parameters and Batdorf Flaw Density Constant for Volume and Surface Flaw Induced Fracture in Ceramics.” NASA Technical Memorandum No. 100890 Oct 1988