자료유형  

 학위논문

Control Number  

0016935857

International Standard Book Number  

9798380828482

Dewey Decimal Classification Number  

629.1

Main Entry-Personal Name  

Wirth, John M.

Publication, Distribution, etc. (Imprint  

[S.l.] : Texas A&M University., 2023

Publication, Distribution, etc. (Imprint  

Ann Arbor : ProQuest Dissertations & Theses, 2023

Physical Description  

1 online resource(216 p.)

General Note  

Source: Dissertations Abstracts International, Volume: 85-05, Section: B.

General Note  

Advisor: Bowersox, Rodney.

Dissertation Note  

Thesis (Ph.D.)--Texas A&M University, 2023.

Restrictions on Access Note  

This item must not be sold to any third party vendors.

Summary, Etc.  

요약A primary challenge inhibiting hypersonic flight is the inability of current methods to adequately predict the thermal loading in hypersonic flight. Key to solving this problem is understanding the boundary layer around realistic flight geometries, which may have varying properties in all 3 dimensions, and providing databases for testing new models and simulations. This work investigated and provided databases for two geometries of interest to the broader hypersonic research community. The Fin-Cone, which created a 3D boundary layer via fin-induced, shock-boundary layer interactions, was studied with infrared thermography and high-frequency pressure measurements in wind tunnels. A new heat flux analysis was developed incorporating 3D effects to eliminate the uncertainties incurred by lower dimensional methods and provide global heat flux data. The BOLT II, side A flight experiment, which created a 3D boundary layer via highly-swept leading edges and concave surfaces, was analyzed using the 409 channels of temperature, heat flux, pressure, and skin-friction data, taking advantage of the multi-dimensional analyses developed for the Fin-Cone. Transition by at least two mechanisms in three different regions of the surface was observed in flight and turbulent data were gathered up to a vehicle-length Reynolds number of 45 million. Integration of the atmospheric data, ground tests, and various simulations are ongoing. These two experiments provide crucial data that will continue to be leveraged to provide a better understanding of 3D, hypersonic boundary layers.

Subject Added Entry-Topical Term  

Aerospace engineering.

Subject Added Entry-Topical Term  

Applied physics.

Subject Added Entry-Topical Term  

Fluid mechanics.

Index Term-Uncontrolled  

Hypersonic

Index Term-Uncontrolled  

Boundary layer

Index Term-Uncontrolled  

Shock-boundary layer interaction (SBLI)

Added Entry-Corporate Name  

Texas A&M University Aerospace Engineering

Host Item Entry  

Dissertations Abstracts International. 85-05B.

Host Item Entry  

Dissertation Abstract International

Electronic Location and Access  

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Control Number  

joongbu:642542