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Free-jet altitude investigation of a 20-inch ram-jet combustor with a rich inner zone of combustion for improved low-temperature-ratio operation
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Copyright Year | 1953 |
| Description | An investigation of the altitude performance of a 20-inch-diameter high-temperature-ratio ram-jet combustor which had been redesigned to provide good combustor efficiency over a wide range of temperature ratios was conducted at zero angle of attack in a free-jet facility at a Mach number of 3.0. Configurations investigated incorporated a cylindrical control sleeve which confined the injected fuel at low over-all fuel-air ratios to about 40 percent of the engine air flow. This provided an optimum fuel-air mixture over a portion of the flame holder when the over-all fuel-air ratio was about 0.02. The configurations with the control sleeve operated with good combustor efficiency at fuel-air ratios as lean as 0.015, whereas the original engine had a lean blow-out limit at a fuel-air ratio of about 0.03. The control sleeve had little effect upon the high-fuel-air-ratio performance of the engine. |
| File Size | 14710304 |
| Page Count | 31 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19930087605 |
| Archival Resource Key | ark:/13960/t6741475k |
| Language | English |
| Publisher Date | 1953-05-25 |
| Access Restriction | Open |
| Subject Keyword | Combustion, Ram-jet Engines Research Technique, Propulsion Engines, Ram-jet Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
