A TUBE WIND TUNNEL FOR HIGH REYNOLDS NUMBER SUPERSONIC TESTING,
Abstract
A modified Ludwieg tube wind tunnel which offers the possibility of high (i.e., full-scale) Reynolds number supersonic testing for the supersonic transport at relatively low cost is described. The modifications, consisting of a revised diaphragm location and a large downstream vacuum tank, are intended to reduce the starting time and starting loads found to exist in the basic Ludwieg tunnel. The operating characteristics of a short flow duration tunnel of this type are discussed along with the problems of instrumentation for a minimum design flow duration equal to one-twentieth of a second. It is anticipated that pressure, heat transfer, and skin friction data can be obtained with instrumentation similar to that now in use. Force data of the precision required for SST tests, however, are expected to be more difficult to obtain. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 01, 1968
- Accession Number
- AD0669353
Entities
People
- Theodore J. Falk
Organizations
- Calspan