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Unconventional nozzle tradeoff study. [space tug propulsion
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Obrien, C. J. |
| Copyright Year | 1979 |
| Description | Plug cluster engine design, performance, weight, envelope, operational characteristics, development cost, and payload capability, were evaluated and comparisons were made with other space tug engine candidates using oxygen/hydrogen propellants. Parametric performance data were generated for existing developed or high technology thrust chambers clustered around a plug nozzle of very large diameter. The uncertainties in the performance prediction of plug cluster engines with large gaps between the modules (thrust chambers) were evaluated. The major uncertainty involves, the aerodynamics of the flow from discrete nozzles, and the lack of this flow to achieve the pressure ratio corresponding to the defined area ratio for a plug cluster. This uncertainty was reduced through a cluster design that consists of a plug contour that is formed from the cluster of high area ratio bell nozzles that have been scarfed. Light-weight, high area ratio, bell nozzles were achieved through the use of AGCarb (carbon-carbon cloth) nozzle extensions. |
| File Size | 9366848 |
| Page Count | 318 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19790020053 |
| Archival Resource Key | ark:/13960/t6xw97726 |
| Language | English |
| Publisher Date | 1979-07-01 |
| Access Restriction | Open |
| Subject Keyword | Spacecraft Propulsion And Power Nozzle Design Plug Nozzles Engine Design Nozzle Flow Performance Prediction Aerodynamics Thrust Chambers Space Tugs Hydrogen Oxygen Engines Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
