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C_(60)的离子质量大、一次电离势能低,且电子碰撞电离截面积大,因而C_(60)作为离子发动机推进剂有潜在的优越性。为评价C_(60)的优势,必须计算诸如推力与离子束功率之比这类特征参数和不同的效率。计算结果表明,与Xe推进剂相比,在同等功率的条件下,用C_(60)作推进剂可使所需的离子束功率减少达57%,从而减轻了电源质量,提高了有效载荷能力。对不同效率的计算结果表明,C_(60)离子发动机的整体效率明显提高,特别是质量效率和电效率比用Xe推进剂的离子发动机效率提高很多。加上C_(60)分子结构的极度灵活性。使得栅极系统的烧蚀非常低,从而延长了发动机寿命。用C_(60)作推进剂的最主要问题是其性能对温度极敏感。高温,则C_(60)分子裂解;低温,则C_(60)分子又会在发动机内壁重新固化。这两种情况都会降低质量效率。因此,对某一特定离子源要进行大量试验,才能确定该离子发动机的温度特性。理论和试验研究表明,以C_(60)为工质的推进系统,其温度窗口为400℃～700℃。
C_ (60) ion mass, the first ionization potential energy is low, and electron impact ionization cross-sectional area, so C_ (60) as a potential ion engine propellant has the advantage. In order to evaluate the advantages of C 60, the characteristic parameters such as the ratio of thrust to ion beam power and different efficiencies must be calculated. The calculated results show that, compared with Xe propellant, C_ (60) propellant can reduce the required power of ion beam by 57% under the same power, thus reducing the power quality and increasing the payload capacity . The calculation results for different efficiencies show that the overall efficiency of the C 60 ion engine is obviously improved. In particular, the mass efficiency and the electrical efficiency are much higher than those of the ion engine using the Xe propellant. Coupled with C_ (60) molecular structure of the extreme flexibility. Making the gate system very low ablation, thus extending the engine life. The main problem with C_ (60) propellants is that their performance is very temperature sensitive. High temperature, the C_ (60) molecule cleavage; low temperature, then C_ (60) molecules in the engine wall re-solidification. Both of these conditions can reduce mass efficiency. Therefore, a large number of tests on a particular ion source can determine the temperature characteristics of the ion engine. Theoretical and experimental studies show that the temperature window of C_ (60) propellant system is 400 ℃ ~ 700 ℃.