Mach-10 High Reynolds Number Development in the NSWC (Naval Surface Weapons Center) Hypervelocity Facility

The present NSWC hypervelocity facility has two Mach number capabilities (10 and 14) which operate over a range of Reynolds numbers. The Mach-10 leg had a maximum Reynolds number capability of 5.4 x 10 to the 6th power/ft. The Reynolds number region of interest for Mach-10, encompassing the reentry...

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Bibliographic Details
Main Author: Kavetsky, Robert A
Format: Report
Language:English
Subjects:
ATMOSPHERE ENTRY
FLIGHT ENVELOPE
Fluid Mechanics
GAS DYNAMICS
HYPERSONIC VELOCITY
HYPERSONIC WIND TUNNELS
HYPERVELOCITY FACILITIES
NAVAL RESEARCH LABORATORIES
PARTICLES
REYNOLDS NUMBER
SCALE
SEPARATORS
STRUCTURAL ANALYSIS
TEST FACILITIES
Test Facilities, Equipment and Methods
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Summary:The present NSWC hypervelocity facility has two Mach number capabilities (10 and 14) which operate over a range of Reynolds numbers. The Mach-10 leg had a maximum Reynolds number capability of 5.4 x 10 to the 6th power/ft. The Reynolds number region of interest for Mach-10, encompassing the reentry flight regime, has been established as 0 to 100 x 10 to the 6th power. Using oversized models in the present 5-foot diameter test cell, this Reynold's number regime scales down to a 0 to 20 x 10 to the 6th power/ft. Requirement in the hypervelocity facility. The potential for a new, marketable testing capability, and the need to maintain a state-of-the-art facility, justified a major design effort to remove the constraints limiting the facility to the 5.4 x 10 to the 6th power/ft Reynolds number. This report documents this design effort, and subsequent performance of the new configuration. Originator-supplied keywords include: Gas dynamics; Run time; Structural analysis; Expansion wave; Flow restrictor; Particle separator; and Control valve.