Regression Rates Study of Mixed Hybrid Propellants
| Autor: | Marlow D. Moser, L. Richard Knox, J. Joshua Whitehead, Robert A. Frederick |
|---|---|
| Rok vydání: | 2007 |
| Předmět: |
Mass flux
Propellant Materials science Waste management Mechanical Engineering Oxide Analytical chemistry Aerospace Engineering Rocket propellant Ammonium perchlorate Solid fuel chemistry.chemical_compound Fuel Technology chemistry Hydroxyl-terminated polybutadiene Space and Planetary Science medicine Ferric medicine.drug |
| Zdroj: | Journal of Propulsion and Power. 23:175-180 |
| ISSN: | 1533-3876 0748-4658 |
| DOI: | 10.2514/1.14327 |
| Popis: | The low regression rates of classic hybrid rocket fuels lead to large internal ports that limit potential applications. This experimental study investigated the increase in regression rate that results from adding a solid oxidizer and a catalyst to a hybrid fuel grain. The configuration is named a "mixed hybrid" hybrid to signify solid oxidizer and catalyst in the grain. A design of experiments approach guided fuel formulation to systematically control levels of ammonium perehlorate from 25% to 30%, ferric oxide from 0 to 5%, and hydroxyl-terminated polybutadiene from 70% to 75%. The 1.5-in. diam. port, 12-in. long center perforated grains were burned with gaseous oxygen at pressure levels from 150 to 550 psig and port flux levels from 0.1 to 0.4 lbm/s-in. 2 . The results show that the mixed hybrid propellants burn as a function of both pressure and mass flux. A grain formulation having 27.5 % ammonium perchlorate and 2.5% ferric oxide provided the maximum burning rate augmentation (447%) among the formulations tested. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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