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Chapitre D'ouvrage Année : 2009

New High Energetic Composite Propellants for Space Applications: Refrigerated Solid Propellant

Résumé

are a new kind chemical propel-to ensure the mechanical resistance of gram. of liquid propulsion disadvantages. is ing between motor loading and firing. It needs insulations that increase the dry mass. It is possible to limit significantly these drawbacks by using a cooling temperature near the ambient one. It will permit not to change the motor materials and to minimize the supplementary dry mass due to insulator. The designation "Refrigerated Solid Propellant" (RPS) is in that case more appropriate as "Cryogenic Solid Propellant." SNPE Materiaux Energetiques is developing new concept of composition with cooling temperature as near the ambient temperature as possible. They are homogeneous and the main ingredients are hydrogen peroxide, polymer and metal or metal hydride, they are called "Hydroxalane TM." This concept allows reaching a high energy level. The expected specific impulse is between 355 and 375 s against 315 s for hydroxyl-terminated polybutadiene (HTPB) / ammonium perchlorate (AP) / Al composition. However, the density is lower than for current propellants, between 1377 and 1462 kg/m 3 compared to around 1800 kg/m 3. This is an handicap only for volume-limited application. Works have been carried out at laboratory scale to define the quality of the raw materials and the manufacturing process to realize sample and small grain in a safer manner. To assess the process, a small grain with an internal bore had been realized with a composition based on aluminum and water. This grain had shown very good quality, without any defect, and good bonding properties on the insulator.

Dates et versions

hal-01859990 , version 1 (22-08-2018)

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C. Franson, O. Orlandi, C. Perut, G. Fouin, C. Chauveau, et al.. New High Energetic Composite Propellants for Space Applications: Refrigerated Solid Propellant. DeLuca, L.; Bonnal, C.; Haidn, O.; Frolov, S. Progress in Propulsion Physics, 2009, 978-2-7598-0411-5. ⟨10.1051/eucass/200901031⟩. ⟨hal-01859990⟩
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