NDLI: Turbine blade-tip clearance excitation forces

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Turbine blade-tip clearance excitation forces

Content Provider	NASA Technical Reports Server (NTRS)
Author	Greitzer, E. M. Martinez-Sanchez, M.
Copyright Year	1985
Description	The results of an effort to assess the existing knowledge and plan the required experimentation in the area of turbine blade tip excitation forces is summarized. The work was carried out in three phases. The first was a literature search and evaluation, which served to highlight the state of the art and to expose the need for an articulated theoretical experimental effort to provide not only design data, but also a rational framework for their extrapolation to new configurations and regimes. The second phase was a start in this direction, in which several of the explicit or implicit assumptions contained in the usual formulations of the Alford force effect were removed and a rigorous linearized flow analysis of the behavior of a nonsymmetric actuator disc was carried out. In the third phase a preliminary design of a turbine test facility that would be used to measure both the excitation forces themselves and the flow patterns responsible for them were conducted and do so over a realistic range of dimensionless parameters.
File Size	3136518
Page Count	99
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19850021651
Archival Resource Key	ark:/13960/t7bs3p35x
Language	English
Publisher Date	1985-06-07
Access Restriction	Open
Subject Keyword	Aircraft Propulsion And Power Blade Tips Test Facilities Actuator Disks Vibration Turbine Blades Clearances Aerodynamic Forces Aerodynamic Stability Rotation Displacement Self Excitation Flow Distribution Mathematical Models Force Distribution Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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