التفاصيل البيبلوغرافية
| العنوان: |
E3 10C compressor test analysis of high-speed post-stall data |
| المؤلفون: |
Dvorak, S. D., Hosny, W. M., Steenken, W. G. |
| المصدر: |
CASI |
| سنة النشر: |
1986 |
| المجموعة: |
NASA Technical Reports Server (NTRS) |
| مصطلحات موضوعية: |
AIRCRAFT PROPULSION AND POWER |
| جغرافية الموضوع: |
Unclassified, Unlimited, Publicly available |
| الوصف: |
In-stall characteristics from high-speed post-stall transients are determined. The transient, surge-cycle nature of high-speed post-stall operation precludes the possibility of obtaining in-stall characteristics in a steady-state manner, as is possible during low-speed post-stall operation, which is characterized by quasi-steady rotating-stall behavior. Maximum likelihood parameter estimation techniques were used to obtain the quasi-steady high-speed characteristics from transient data. The necessary data was first obtained from a specially instrumented compressor that was tested well beyond its limits of normal operation. The unsteady, post-stall data thus obtained was then digitized and processed through a simplified analytical model to construct the input-output relationship necessary for estimation. In-stall characteristics were determined using this estimation procedure at two different high-speed conditions, 90 and 98.5 percent corrected speed. The estimated characteristics were found to be robust in the presence of measurement noise and unmodelled system dynamics, but the compressor response-time constants, also estimated, were more sensitive to these same disturbances. The experimentally determined low-speed in-stall characteristics and the estimated high-speed in-stall characteristics were then incorporated into a one-dimensional compressor simulation model developed as a parallel effort to the compressor testing and data reduction effort, which yielded predictable results. |
| نوع الوثيقة: |
other/unknown material |
| وصف الملف: |
application/pdf |
| اللغة: |
unknown |
| Relation: |
Document ID: 19880019545; Accession ID: 88N28929; http://hdl.handle.net/2060/19880019545 |
| الاتاحة: |
http://hdl.handle.net/2060/19880019545 |
| Rights: |
No Copyright |
| رقم الانضمام: |
edsbas.F23530D9 |
| قاعدة البيانات: |
BASE |