Accession Number:

AD0604354

Title:

AN EXPERIMENTAL STUDY OF THE EFFECTS OF VARIATIONS IN BOUNDARY LAYER THICKNESS AND LIP COVERAGE ON THE PERFORMANCE OF FLUSH SCOOPS,

Descriptive Note:

Corporate Author:

MARYLAND UNIV COLLEGE PARK

Personal Author(s):

Report Date:

1964-06-01

Pagination or Media Count:

40.0

Abstract:

Two families of scoops were tested in various boundary layer conditions. The maximum pressure coefficient and useful range of flow coefficients decreased with increasing boundary layer thickness. Increasing the coverage improved the maximum pressure coefficient but decreased the useful range of flow coefficients. The family based on the circular inlet pipe proved to be generally superior to the family based on the square inlet pipe. The flush scoop with the circular inlet pipe was more sensitive to variations in free stream velocity and gave variable performance. On the basis of present tests and comparisons with previous test results it was recommended to fail or flare the scoop shape rather than have the inlet pipe intersect the wall abruptly. A numerical analysis of the data was unsuccessful in developing a more effective or concise method for presenting scoop performance data to replace the individual performance curves. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE