The goals of the NASA Hypersonic Research Engine (HRE) Project, which began in 1964, were to design, develop, and construct a hypersonic research ramjet/scramjet engine for high performance and to flight-test the developed concept over the speed range from Mach 3 to 8. The project was planned to be accomplished in three phases: project definition, research engine development, and flight test using the X-15A-2 research aircraft, which was modified to carry hydrogen fuel for the research engine. The project goal of an engine flight test was eliminated when the X-15 program was canceled in 1968. Ground tests of engine models then became the focus of the project. Two axisymmetric full-scale engine models having 18-inch-diameter cowls were fabricated and tested: a structural model and a combustion/propulsion model. A brief historical review of the project with salient features, typical data results, and lessons learned is presented.
Review of NASA's Hypersonic Research Engine Project
AIAA, SAE, ASME, and ASEE, Joint Propulsion Conference and Exhibit ; 1993 ; Monterey, CA, United States
1993-06-01
Conference paper
No indication
English
NASA's Hypersonic Research Engine Project: A review
NTRS | 1994
|Nasa's Hypersonic Research Engine Project: A Review
NTIS | 1994
|Review of NASA's Hypersonic Research Engine Project
AIAA | 1993
|NASA's hypersonic flight research program
NTRS | 1993
|NASA's hypersonic flight research program
AIAA | 1993
|