技术档案
液体火箭发动机Liquid rocket engine
燃烧液体推进剂产生推力
每条都摘自下方编号的来源原文；只写事实，不写预测或建议。
技术简介
- Miranda与其真空型Vira采用由Reaver和Lightning发动机放大的技术，使用Firefly的抽气循环架构并由其内部设计、制造和测试。1
Both Miranda and Vira utilize flight-proven technology scaled from the company’s Reaver and Lightning rocket engines, which were designed, built, and tested in-house with Firefly’s patented tap-off cycle technology and vertically integrated approach.
已有应用
- Firefly把Alpha火箭Reaver和Lightning发动机的抽气循环架构用于Eclipse的Miranda和Vira发动机，并完成206秒Miranda热试车。2
Firefly utilized the same patented tap-off cycle architecture from Alpha’s Reaver and Lightning engines for Eclipse’s Miranda and Vira engines, and completed mission duty cycle with a 206 second Miranda hot fire, matching the longest time the engine will burn during a flight.
为何此时
- 截至2026年11月6日，Miranda已进行超过175次、合计超过4200秒的热试车，其中一次以110%性能运转并超过206秒标称飞行时长20秒。1
Firefly’s Miranda engine has performed over 175 hot fire tests for more than 4,200 seconds, including a flight-like test at 110% performance of the 230,000 lbf thrust engine that successfully performed 20 seconds beyond the nominal flight duration of 206 seconds.
主要参与者
- Firefly将为AST SpaceMobile前三枚火箭交付27台Miranda及9台真空型Vira，并许可AST自行制造发动机。1
Under the agreement, Firefly will deliver 27 of its Miranda engines and nine of its vacuum-variant Vira engines for AST SpaceMobile’s first three rockets, and provide the license for AST SpaceMobile to manufacture the engines.
未定事项
- 2026年11月6日，Miranda发动机已进行超过175次、累计超过4200秒热试车；这一记录本身不是Miranda已飞行的证明。1
Firefly’s Miranda engine has performed over 175 hot fire tests for more than 4,200 seconds, including a flight-like test at 110% performance of the 230,000 lbf thrust engine that successfully performed 20 seconds beyond the nominal flight duration of 206 seconds.