论文部分内容阅读
2015年5月20日,在美国佛罗里达州卡纳维拉尔角航天发射场,一枚“宇宙神”-5型运载火箭搭载X-37B无人空天飞机飞离发射台,X-37B第四次在轨测试之旅由此开启。与前三次不同,美国空军这次主动透露X-37B主要是测试电推进火箭(霍尔推进器)等新技术。霍尔推进器通过电离、加速惰性气体氙产生推力,与传统火箭发动机相比推力不大,但胜在能效大幅提高。采用霍尔
On May 20, 2015, at the Cape Canaveral Space Launch Site in Florida, US, a “Cosmic God” -type 5 rocket carrying an X-37B unmanned space shuttle departed from the launch pad and the X- 37B fourth in-orbit test tour thus opened. Unlike the previous three, the U.S. Air Force took the initiative to disclose that the X-37B is mainly testing new technologies such as electric propulsion rockets (Hall thrusters). Hall thrusters produce lift by ionizing and accelerating the inert gas xenon, which is less powerful than conventional rocket engines but at a much greater rate of energy efficiency. With Hall