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Accession Number:
ADA278403
Title:
Calibration and Validation Studies in the LENS Facility
Descriptive Note:
Final rept. 10 Aug 1991-9 Feb 1994
Corporate Author:
CALSPAN UB RESEARCH CENTER BUFFALO NY
Report Date:
1994-02-09
Pagination or Media Count:
62.0
Abstract:
This report describes recent developments in the LENS facility, flow field calibration studies, and aerothermal and aero-optical measurements to evaluate the turbulent flow field characteristics of seeker head configurations in hypervelocity airflow. The development of the LENS facility to run at pressure levels up to 30,000 psi and temperatures up to 14,000 deg R are reviewed. Issues associated with diaphragm performance, reservoir configuration, throat melting and burning, and modifications to the facility for large recoil loads at high pressure operation are briefly reviewed. Flow field measurements made during calibration studies are compared with computer predictions. Validation studies with simple seeker head aperture configurations in high enthalpy flows are then discussed. The models and aerothermal and aero-optical instrumentation used in these studies are described. The measurements obtained in flows up to 12,000 ftsec are compared with similar measurements at lower velocities, simple correlation techniques, and detailed computer simulations.
Distribution Statement:
APPROVED FOR PUBLIC RELEASE
