Calibration and Validation Studies in the LENS Facility
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 ft/sec are compared with similar measurements at lower velocities, simple correlation techniques, and detailed computer simulations.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 09, 1994
- Accession Number
- ADA278403
Entities
People
- Michael Holden
Organizations
- Calspan-University of Buffalo Research Center