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Design of Conventional and Detonation-Driven Hypervelocity Expansion Tubes

Lawson, Joel M. and Austin, Joanna M. (2018) Design of Conventional and Detonation-Driven Hypervelocity Expansion Tubes. In: 2018 Aerodynamic Measurement Technology and Ground Testing Conference. American Institute of Aeronautics and Astronautics , Reston, VA, Art. No. 2018-3566. ISBN 978-1-62410-561-6. https://resolver.caltech.edu/CaltechAUTHORS:20190816-105723199

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Abstract

Freestream disturbances can have a significant impact on studies of boundary layer transition in ground tests, including experiments in high-enthalpy hypersonic facilities such as an expansion tube. Freest ream noise reduction in expansion tubes can be achieved by increasing the driver-to-driven pressure ratio p_4/p_1, so we seek .methods to increase this ratio in Caltech's HET facility. Towards this end, an in-house modular parametric code has been developed using Python to explore possible modifications to the HET. The effect of increasing the pressure in a passive driver on potential noise reduction is investigated. Optimization of acceleration section length is also explored for conventional drivers. The performance of detonation drivers using H_2 and C_2H_2 fuels with He, Ar, and CO_2 diluents is examined.


Item Type:Book Section
Related URLs:
URLURL TypeDescription
https://doi.org/10.2514/6.2018-3566DOIArticle
Additional Information:© 2018 American Institute of Aeronautics and Astronautics. Published Online: 24 Jun 2018.
Group:GALCIT
Other Numbering System:
Other Numbering System NameOther Numbering System ID
AIAA Paper2018-3566
Record Number:CaltechAUTHORS:20190816-105723199
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20190816-105723199
Official Citation:Design of Conventional and Detonation-Driven Hypervelocity Expansion Tubes. Joel M. Lawson and Joanna M. Austin. 2018 Aerodynamic Measurement Technology and Ground Testing Conference. June. doi: 10.2514/6.2018-3566
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:97950
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:16 Aug 2019 20:14
Last Modified:03 Oct 2019 21:36

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