Exploratory Experiments for Simple Approximation of Blade Flutter Aerodynamic Loading Function

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24220%2F22%3A00010503" target="_blank" >RIV/46747885:24220/22:00010503 - isvavai.cz</a>

Alternative codes found

RIV/61388998:_____/22:00564780

Result on the web

<a href="https://doi.org/10.1115/GT2022-83351" target="_blank" >https://doi.org/10.1115/GT2022-83351</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1115/GT2022-83351" target="_blank" >10.1115/GT2022-83351</a>

Result language

angličtina

Original language name

Exploratory Experiments for Simple Approximation of Blade Flutter Aerodynamic Loading Function

Original language description

Exploratory experiments to verify a newly proposed simple method determining an approximate form of unsteady blade loading function are described in this paper In this newly proposed approach, a time-dependent blade loading will be substituted for by a series of static loadings acquired for a range of blade incidence angle offsets. The sequence of static loadings will be converted into a time-dependent quasi-dynamic function computationally. In the course of this project a new test facility for forced blade flutter research capable of transonic inlet flow at high oscillation blade frequencies was designed and built at the IT CAS laboratory. A series of test runs simulating blade flutter conditions were carried out for the inlet Mach number range from 0.6 up to 1.09 and blade oscillation frequencies up to 80 Hz. A blade static loading function was created as a pressure difference measured while the blade was not moving and it was set to the outermost incidence angle offsets of plus/minus 1 deg. A blade dynamic loading function was determined as a peak-to-peak amplitude of measured pressure fluctuation while the blade was oscillated at a frequency of 80 Hz. A very good agreement between the measured blade static and blade dynamic loading functions indicates the potentials of the proposed quasi-dynamic method to closely estimate blade loading functions, at least for the reported range of cascade operation conditions.

Czech name

—

Czech description

—

Type

D - Article in proceedings

CEP classification

—

OECD FORD branch

20304 - Aerospace engineering

Project

<a href="/en/project/LTAUSA19036" target="_blank" >LTAUSA19036: Advanced experimental research on synchronous and non-synchronous blade vibration</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2022

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

Proceedings of the ASME Turbo Expo

ISBN

978-079188606-9

ISSN

—

e-ISSN

—

Number of pages

10

Pages from-to

—

Publisher name

The American Society of Mechanical Engineers

Place of publication

—

Event location

Rotterdam

Event date

Jan 1, 2022

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

—