NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Collections About News Help Login
Back to Results
The design and operational development of self-streamlining 2-dimensional flexible walled test sectionsSelf streamlining two dimensional flexible walled test sections eliminate the uncertainties found in data from conventional test sections particularly at transonic speeds. The test section sidewalls are rigid, while the floor and ceiling are flexible and are positioned to streamline shapes by a system of jacks, without reference to the model. The walls are therefore self streamlining. Data are taken from the model when the walls are good streamlines such that the inevitable residual wall induced interference is acceptably small and correctable. Successful two dimensional validation testing at low speeds has led to the development of a new transonic flexible walled test section. Tunnel setting times are minimized by the development of a rapid wall setting strategy coupled with on line computer control of wall shapes using motorized jacks. Two dimensional validation testing using symmetric and cambered aerofoils in the Mach number range up to about 0.85 where the walls are just supercritical, shows good agreement with reference data using small height-chord ratios between 1.5 and unity.
Document ID
19840014466
Acquisition Source
Legacy CDMS
Document Type
Thesis/Dissertation
Authors
Wolf, S. W. D. (Southampton Univ.)
Date Acquired
September 4, 2013
Publication Date
March 1, 1984
Subject Category
Aerodynamics
Report/Patent Number
NASA-CR-172328
NAS 1.26:172328
Accession Number
84N22534
Funding Number(s)
PROJECT: RTOP 505-31-53-10
CONTRACT_GRANT: NSG-7172
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

Related Records

There are no records associated with this record.
No Preview Available