Study on Thermal Degradation Characteristics andRegression Rate Measurement of Paraffin-Based Fuel

Energies

Hongyun Hu¹  Songqi Hu²  Yijin Hua²  Noor Fatima Rashid²  Guanjie Wu² 

[1] School of Foreign Languages, Shaanxi Normal University, Xi'an 710062, China;Science and Technology on Combustion Internal Flow and Thermal-Structure Laboratory, Northwestern Polytechnical University Xi'an, Xi'an 710072, China;

关键词: paraffin fuel;    energy characteristics;    hybrid rocket;    regression rate;   

DOI  :  10.3390/en80910058

来源: DOAJ

【 摘 要 】

Paraffin fuel has been found to have a regression rate that is higherthan conventional HTPB (hydroxyl-terminated polybutadiene) fuel and,thus, presents itself as an ideal energy source for a hybrid rocketengine. The energy characteristics of paraffin-based fuel and HTPB fuelhave been calculated by the method of minimum free energy. The thermaldegradation characteristics were measured for paraffin, pretreatedparaffin, HTPB and paraffin-based fuel in different working conditionsby the using differential scanning calorimetry (DSC) and athermogravimetric analyzer (TGA). The regression rates of paraffin-basedfuel and HTPB fuel were tested by a rectangular solid-gas hybridengine. The research findings showed that: the specific impulse ofparaffin-based fuel is almost the same as that of HTPB fuel; thedecomposition temperature of pretreated paraffin is higher than that ofthe unprocessed paraffin, but lower than that of HTPB; with the increaseof paraffin, the initial reaction exothermic peak of paraffin-basedfuel is reached in advance, and the initial reaction heat release alsoincreases; the regression rate of paraffin-based fuel is higher than thecommon HTPB fuel under the same conditions; with the increase ofoxidizer mass flow rate, the regression rate of solid fuel increasesaccordingly for the same fuel formulation.

【 授权许可】

Unknown