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Apollo-Shaped Capsule Boundary Layer Transition at High-Enthalpy in T5

Marineau, Eric C. and Laurence, Stuart J. and Hornung, Hans G. (2011) Apollo-Shaped Capsule Boundary Layer Transition at High-Enthalpy in T5. In: AIAA conference proceedings on disc, Vol. 15, No. 1 (ASM). 48th AIAA Aerospace Sciences Meeting , 04.-07. Januar 2010, Orlando, USA. ISBN 1600867391.

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An investigation of the boundary layer transition on a 7-inch Apollo-shaped capsule heatshield at high enthalpy was performed in the T5 Hypervelocity Shock Tunnel at GAL-CIT. Three series of tests on 2 models for a total 57 shots were performed in air at angles-of-attack of 20-deg and 28-deg for stagnation enthalpies between 7 and 20 MJ/kg and stagnation pressures between 20 and 60 MPa. The free-stream Reynolds number based on model diameter was between 0.3 and 0.9 million. A trip insert with 25 0.05-inch square "pizza box" roughness elements located at 0.345-inch below the heat shield geometric cen- ter was used to promote transition on the leeside of the model. Trip heights of 0.007, 0.010 and 0.015 inch were used. Tests were performed with and without trips to evaluate the turbulent heating augmentation. For the highest Reynolds number condition, natural transition occurred on the leeside at both angle of attacks. The most aggressive trips appear to have generated a fully turbulent ows over the leeside of for the high enthalpy conditions at 17 MJ/kg.

Item URL in elib:https://elib.dlr.de/67232/
Document Type:Conference or Workshop Item (Speech, Paper)
Title:Apollo-Shaped Capsule Boundary Layer Transition at High-Enthalpy in T5
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Marineau, Eric C.California Institute of Technology, Pasadena, CAUNSPECIFIEDUNSPECIFIED
Hornung, Hans G.California Institute of Technology, Pasadena, CAUNSPECIFIEDUNSPECIFIED
Journal or Publication Title:AIAA conference proceedings on disc
Refereed publication:No
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Volume:Vol. 15, No. 1 (ASM)
Series Name:2010 AIAA Meetng Papers on Disc
Keywords:boundary layer, high enthalpy,
Event Title:48th AIAA Aerospace Sciences Meeting
Event Location:Orlando, USA
Event Type:international Conference
Event Dates:04.-07. Januar 2010
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W RP - Raumtransport
DLR - Research area:Space
DLR - Program:W RP - Raumtransport
DLR - Research theme (Project):W - Grundlagen Raumtransport - Anlagen und Messtechnik (old)
Location: Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Spacecraft
Deposited By: Brennecke-Hosseinzadeh, Dagmar
Deposited On:13 Jan 2011 14:49
Last Modified:13 Jan 2011 14:49

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