Accession Number:

AD1064314

Title:

Blunt Cone, Hifire-1 and Hifire-5 Boundary Layer Transition

Descriptive Note:

Technical Report,01 Jul 2016,01 Jul 2018

Corporate Author:

AIR FORCE RESEARCH LAB WRIGHT-PATTERSON AFB OH WRIGHT-PATTERSON AFB

Personal Author(s):

• Kimmel,Roger
• Adamczak,David
• Borg,Matthew
• Jewell,Joseph S.
• Tufts,Matthew
• Kennedy,Richard
• Laurence,Stuart

Report Date:

2018-07-01

Pagination or Media Count:

76.0

Abstract:

This interim technical report summarizes technical activity on AFRL 6.1 laboratory task LRIR 15RQCOR102 during fiscal year 2017. The objective of this task is to better understand boundary layer transition in hypersonic flowfields with spanwise nonuniformity. Several advances were made under this task during FY18. The HIFiRE-1 and -5b body of ground and flight data were further analyzed, producing some general recommendations on the prediction and ground test of hypersonic boundary layer transition. As a precursor to testing transition on the spanwise nonuniform boundary layer on a cone, the transition mechanisms for blunt cones were measured in the AFRL high Reynolds Mach 6 wind tunnel. These measurements are the first of their type made in this facility.

Descriptors:

• flight testing
• boundary layer transition
• wind tunnel tests
• heat transfer
• pressure measurement
• swept wings
• turbulent flow
• shock tunnels
• boundary layer control
• fluid mechanics
• computational fluid dynamics

Subject Categories:

• Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE