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The design and operational development of self-streamlining 2-dimensional flexible walled test sections. ph.d. thesis
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Wolf, S. W. D. |
| Copyright Year | 1984 |
| Description | Self 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. |
| File Size | 31719163 |
| Page Count | 288 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19840014466 |
| Archival Resource Key | ark:/13960/t8bg7ht6f |
| Language | English |
| Publisher Date | 1984-03-01 |
| Access Restriction | Open |
| Subject Keyword | Aerodynamics Aerodynamic Drag Two Dimensional Bodies Calibrating Transonic Wind Tunnels Reynolds Number Data Processing Airfoils Computerized Simulation Computer Programs Aerodynamic Configurations Computation Wind Tunnel Tests Numerical Control Streamlined Bodies Computer Design Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Thesis |
