Date of Award
Spring 4-2014
Access Type
Thesis - Open Access
Degree Name
Master of Science in Aerospace Engineering
Department
Aerospace Engineering
Committee Chair
Sandra K.S. Boetcher
First Committee Member
L. L. Narayanaswami
Second Committee Member
Eric Perrell
Abstract
The following work investigates an alternative supersonic film cooling method for hydrogen-fueled, gas-generator cycle rocket engines. The research is intended to serve as an initial proof-of-concept for a biased supersonic film cooling method envisioned for nozzle extension thermal management. The proposed method utilizes a dual-stream injection process that leverages the high heat capacity of the fuel-rich gas-generator gases. By comparing the proposed cooling strategy to the conventional mixed injection process, the research numerically validates the biased supersonic film cooling scheme for low supersonic slot Mach numbers. The average film cooling effectiveness was improved 5%-8% with increases as high as 12%. The average reduction in wall temperature ranged from 9%-15% with maximum reductions as high as 36% over the conventional method.
Scholarly Commons Citation
Carkin, Michael J., "Assessment of the Thermal Advantages of Biased Supersonic Cooling" (2014). Doctoral Dissertations and Master's Theses. 34.
https://commons.erau.edu/edt/34
