Home Research For Teachers HISTORY
Level 1
Level 2
Level 3
Level 1
Level 2
Level 3
Level 1
Level 2
Level 3
Search Hot Links What's New!
Gallery Feedback Admin/Tools

Please let me remind all of you--this material is copyrighted. Though partially funded by NASA, it is still a private site. Therefore, before using our materials in any form, electronic or otherwise, you need to ask permission.
There are two ways to browse the site: (1) use the search button above to find specific materials using keywords; or,
(2) go to specific headings like history, principles or careers at specific levels above and click on the button. 
Teachers may go directly to the Teachers' Guide from the For Teachers button above or site browse as in (1) and  (2).

FAQnewred.gif (906 bytes)          

ARMY-NASA Partnership at Lewis Research Center

Small Turbine Engine Research (STER)

lowis1.gif (60829 bytes)This in-house program provides a vehicle for investigating system-related phenomena and for evaluating the application of advanced concepts to turboshaft engine systems. Program goals are aligned to develop a physical understanding of system dynamics problems and/or interactions among engine components. Typical investigations include implementing advanced controls and studying dynamic responses; documenting the behavior of ceramic turbine shrouds; demonstrating a contingency power concept; and determining methods of quantifying the effects of engine inlet temperature distortion, both steady-state and transient.

The unique capability to quantify the effects of inlet temperature distortion was a fallout of earlier NASA programs. The concept, which provides for a controlled rate of temperature increase in sectors of the inlet, was refined and adapted to the Army's RAH-66 Comanche powerplant, the T800 engine. Distortion investigations, conducted jointly with the engine manufacturer, provided data needed early in the engine development to define stability margins. This testing capability was also available for meeting engine qualification requirements. Other NASA Lewis facilities were used to determine the overall performance of the T800 engine at altitude conditions. Separate from these efforts, components and concepts demonstrated in the STER Program have been handed off to the engine industry and incorporated in advanced Army engines.

POC: George Bobula
lewis1a.gif (150297 bytes)
Engine Components Research Laboratory

Send all comments to allstar@fiu.edu
1995-2017 ALLSTAR Network. All rights reserved worldwide.

Funded in part by

Updated: March 12, 2004